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Document and Entity Information - USD ($) $ in Millions	12 Months Ended
Document and Entity Information - USD ($) $ in Millions	Dec. 31, 2018	Mar. 01, 2019	Jun. 30, 2018
Entity Information [Line Items]
Entity Registrant Name	BEL FUSE INC /NJ
Entity Central Index Key	0000729580
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Ex Transition Period	false
Entity Public Float			$ 237.6
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Class A Common Stock [Member]
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		2,174,912
Class B Common Stock [Member]
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		10,089,852

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current Assets:
Cash and cash equivalents	$ 53,911	$ 69,354
Accounts receivable - less allowance for doubtful accounts of $1,638 and $1,745 at December 31, 2018 and 2017, respectively	91,939	78,808
Inventories	120,068	107,719
Unbilled receivables	15,799	0
Other current assets	8,792	10,218
Total current assets	290,509	266,099
Property, plant and equipment, net	43,932	43,495
Intangible assets, net	62,689	69,366
Goodwill	19,817	20,177
Deferred income taxes	496	4,155
Other assets	26,081	27,973
Total assets	443,524	431,265
Current Liabilities:
Accounts payable	56,171	47,947
Accrued expenses	32,290	30,508
Current maturities of long-term debt	2,508	2,641
Other current liabilities	15,061	6,204
Total current liabilities	106,030	87,300
Long-term Liabilities:
Long-term debt	111,705	120,053
Liability for uncertain tax positions	27,553	27,948
Minimum pension obligation and unfunded pension liability	18,683	19,134
Deferred income taxes	1,161	1,567
Other long-term liabilities	1,922	17,303
Total liabilities	267,054	273,305
Commitments and contingencies
Stockholders' equity:
Preferred stock, no par value, 1,000,000 shares authorized; none issued	0	0
Additional paid-in capital	31,387	28,575
Retained earnings	168,695	147,807
Accumulated other comprehensive loss	(24,838)	(19,625)
Total stockholders' equity	176,470	157,960
Total liabilities and stockholders' equity	443,524	431,265
Class A Common Stock [Member]
Stockholders' equity:
Common Stock	217	217
Class B Common Stock [Member]
Stockholders' equity:
Common Stock	$ 1,009	$ 986

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current Assets:
Accounts receivable, allowance for doubtful accounts	$ 1,638	$ 1,745
Stockholders' Equity:
Preferred stock, par value (in dollars per share)	$ 0	$ 0
Preferred stock, authorized (in shares)	1,000,000	1,000,000
Preferred stock, issued (in shares)	0	0
Class A Common Stock [Member]
Stockholders' Equity:
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, authorized (in shares)	10,000,000	10,000,000
Common stock, outstanding (in shares)	2,174,912	2,174,912
Common stock, treasury shares (in shares)	1,072,769	1,072,769
Class B Common Stock [Member]
Stockholders' Equity:
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, authorized (in shares)	30,000,000	30,000,000
Common stock, outstanding (in shares)	10,092,352	9,859,352
Common stock, treasury shares (in shares)	3,218,307	3,218,307

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Net sales	$ 548,184	$ 491,611
Cost of sales	438,414	389,262
Gross profit	109,770	102,349
Selling, general and administrative expenses	79,937	84,655
Restructuring charges	222	308
Income from operations	29,611	17,386
Interest expense	(5,317)	(6,802)
Interest income and other expense, net	(678)	(941)
Earnings before provision for income taxes	23,616	9,643
Provision for income taxes	2,907	21,540
Net earnings (loss) available to common shareholders	20,709	(11,897)
Class A Common Stock [Member]
Net earnings (loss) available to common shareholders	$ 3,521	$ (2,113)
Net earnings (loss) per common share:
Common shares - basic and diluted (in dollars per share)	$ 1.62	$ (0.97)
Weighted-average shares outstanding:
Common shares - basic and diluted (in shares)	2,175	2,175
Dividends paid per common share:
Common shares (in dollars per share)	$ 0.24	$ 0.24
Class B Common Stock [Member]
Net earnings (loss) available to common shareholders	$ 17,188	$ (9,784)
Net earnings (loss) per common share:
Common shares - basic and diluted (in dollars per share)	$ 1.73	$ (0.99)
Weighted-average shares outstanding:
Common shares - basic and diluted (in shares)	9,939	9,857
Dividends paid per common share:
Common shares (in dollars per share)	$ 0.28	$ 0.28

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) [Abstract]
Net earnings (loss)	$ 20,709	$ (11,897)
Other comprehensive (loss) income:
Currency translation adjustment, net of taxes	(6,098)	12,439
Unrealized holding losses on marketable securities arising during the period, net of taxes	(133)	(279)
Change in unfunded SERP liability, net of taxes	1,018	(488)
Other comprehensive (loss) income:	(5,213)	11,672
Comprehensive income (loss)	$ 15,496	$ (225)

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Other comprehensive (loss) income:
Foreign currency translation adjustment, tax expense	$ 51	$ 183
Unrealized holding losses on marketable securities arising during the period, tax (benefit)	(85)	(177)
Change in unfunded SERP liability, tax expense (benefit)	$ 954	$ (237)

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Class A Common Stock [Member]	Class B Common Stock [Member]	Retained Earnings [Member]	Retained Earnings [Member] Class A Common Stock [Member]	Retained Earnings [Member] Class B Common Stock [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Common Stock [Member] Class A Common Stock [Member]	Common Stock [Member] Class B Common Stock [Member]	Additional Paid-in Capital [Member]
Balance at Dec. 31, 2016	$ 158,434			$ 161,287			$ (31,297)	$ 217	$ 985	$ 27,242
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared on common stock		$ (522)	$ (2,757)		$ (522)	$ (2,757)
Issuance of restricted common stock	0								5	(5)
Forfeiture of restricted common stock	0								(4)	4
Foreign currency translation adjustment, net of taxes	12,439						12,439
Unrealized holding losses on marketable securities arising during the year, net of taxes	(279)						(279)
Stock-based compensation expense	3,030									3,030
Change in unfunded SERP liability, net of taxes	(488)						(488)
Reclassification of APIC pool upon adoption of ASU 2016-09 \| ASU 2016-09 [Member]	0			1,696						(1,696)
Net earnings (loss)	(11,897)	(2,113)	(9,784)	(11,897)
Balance at Dec. 31, 2017	157,960			147,807			(19,625)	217	986	28,575
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Effect of adoption of ASU 2014-09 (Topic 606) \| ASU 2014-09 [Member]	3,497			3,497
Cash dividends declared on common stock		(522)	(2,796)		$ (522)	$ (2,796)
Issuance of restricted common stock	0								26	(26)
Forfeiture of restricted common stock	0								(3)	3
Foreign currency translation adjustment, net of taxes	(6,098)						(6,098)
Unrealized holding losses on marketable securities arising during the year, net of taxes	(133)						(133)
Stock-based compensation expense	2,835									2,835
Change in unfunded SERP liability, net of taxes	1,018						1,018
Net earnings (loss)	20,709	$ 3,521	$ 17,188	20,709
Balance at Dec. 31, 2018	$ 176,470			$ 168,695			$ (24,838)	$ 217	$ 1,009	$ 31,387

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY [Abstract]
Foreign currency translation adjustment, tax expense	$ 51	$ 183
Unrealized holding losses on marketable securities arising during the period, tax (benefit)	(85)	(177)
Change in unfunded SERP liability, tax (benefit) expense	$ 954	$ (237)

CONSOLIDATED STATEMENTS OF CASH FLOWS $ in Thousands	12 Months Ended
CONSOLIDATED STATEMENTS OF CASH FLOWS $ in Thousands	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Cash flows from operating activities:
Net earnings (loss)	$ 20,709	$ (11,897)
Adjustments to reconcile net earnings (loss) to net cash provided by operating activities:
Depreciation and amortization	18,207	20,718
Stock-based compensation	2,835	3,030
Amortization of deferred financing costs	531	2,259
Deferred income taxes	2,490	(315)
Unrealized (gains) losses on foreign currency revaluation	(2,663)	2,770
Loss on disposal of property, plant and equipment	141	109
Other, net	795	1,897
Changes in operating assets and liabilities:
Accounts receivable	(13,004)	(2,948)
Unbilled receivables	(1,263)	0
Inventories	(24,735)	(6,160)
Other current assets	966	(2,423)
Other assets	922	(1,621)
Account payable	8,995	(1,426)
Accrued expenses	1,911	(1,861)
Other liabilities	(15,708)	16,566
Income taxes payable	8,968	5,422
Net cash provided by operating activities	10,097	24,120
Cash flows from investing activities:
Purchase of property, plant and equipment	(11,594)	(6,425)
Payment for acquisition, net of cash acquired	(2,177)	0
Proceeds from surrender of company-owned life insurance	433	0
Purchase of company-owned life insurance	(433)	0
Proceeds from sale of marketable securities within rabbi trust	1,348	0
Purchase of marketable securities within rabbi trust	(1,348)	0
Proceeds from disposal/sale of property, plant and equipment	77	76
Net cash used in investing activities	(13,694)	(6,349)
Cash flows from financing activities:
Dividends paid to common shareholders	(3,295)	(3,281)
Deferred financing costs	0	(2,012)
Borrowings under revolving credit line	7,500	6,000
Repayments under revolving credit line	(7,500)	(6,000)
Reduction in notes payable	0	(225)
Proceeds from long-term debt	0	125,000
Repayments of long-term debt	(9,012)	(143,799)
Net cash used in financing activities	(12,307)	(24,317)
Effect of exchange rate changes on cash	461	2,489
Net decrease in cash and cash equivalents	(15,443)	(4,057)
Cash and cash equivalents - beginning of year	69,354	73,411
Cash and cash equivalents - end of year	53,911	69,354
Cash paid during the year for:
Income tax payments, net of refunds received	7,483	756
Interest payments	4,775	4,353
Details of acquisition:
Goodwill	19,817	20,177
Cash paid for acquisition, net of cash acquired	2,177	0
BCMZ [Member]
Cash flows from investing activities:
Payment for acquisition, net of cash acquired	(2,177)	0
Details of acquisition:
Fair value of identifiable net assets acquired	1,298	0
Goodwill	1,290	0
Net assets acquired	2,588	0
Fair value of consideration transferred	2,588	0
Less: Cash acquired in acquisition	(411)	0
Cash paid for acquisition, net of cash acquired	$ 2,177	$ 0

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

12 Months Ended

Dec. 31, 2018

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

1. DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Bel Fuse Inc. and subsidiaries ("Bel," the "Company," "we," "us," and "our") design, manufacture and sell a broad array of products that power, protect and connect electronic circuits. These products are used in the networking, telecommunication, high-speed data transmission, commercial aerospace, military, broadcasting, transportation and consumer electronic industries around the world. We manage our operations geographically through our three reportable operating segments: North America, Asia and Europe.

All amounts included in the tables to these notes to consolidated financial statements, except per share amounts, are in thousands.

Principles of Consolidation - The consolidated financial statements include all of the accounts of the Company and its wholly owned subsidiaries. All intercompany transactions and balances have been eliminated in consolidation.

Use of Estimates - The preparation of the consolidated financial statements in conformity with accounting principles generally accepted in the United States of America ("U.S. GAAP") requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities. On an on-going basis, we evaluate our estimates, including but not limited to those related to product returns, provisions for bad debt, inventories, goodwill, intangible assets, investments, Supplemental Executive Retirement Plan ("SERP") expense, income taxes, contingencies, litigation and the impact related to tax reform. We base our estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.

Cash Equivalents - Cash equivalents include short-term investments in money market funds and certificates of deposit with an original maturity of three months or less when purchased. Accounts at each institution are insured by the Federal Deposit Insurance Corporation ("FDIC") up to $250,000. Some of our balances are in excess of the FDIC insured limit.

Allowance for Doubtful Accounts - We maintain an allowance for doubtful accounts for estimated losses from the inability of our customers to make required payments. We determine our allowance by both specific identification of customer accounts where appropriate and the application of historical loss experience to non-specific accounts.

Effects of Foreign Currency – In non-U.S. locations that are not considered highly inflationary, we translate the balance sheets at the end of period exchange rates with translation adjustments accumulated within stockholders' equity on our consolidated balance sheets. We translate the statements of operations at the average exchange rates during the applicable period. In connection with foreign currency denominated transactions, including multi-currency intercompany payable and receivable transactions and loans, the Company incurred net realized and unrealized currency exchange gains (losses) of $2.7 million and ($2.8) million for the years ended December 31, 2018 and 2017, respectively, which were included in SG&A expenses on the consolidated statements of operations.

Concentration of Credit Risk - Financial instruments which potentially subject us to concentrations of credit risk consist principally of accounts receivable and temporary cash investments. We grant credit to customers that are primarily original equipment manufacturers and to subcontractors of original equipment manufacturers based on an evaluation of the customer's financial condition, without requiring collateral. Exposure to losses on receivables is principally dependent on each customer's financial condition. We control our exposure to credit risk through credit approvals, credit limits and monitoring procedures and establish allowances for anticipated losses. See Note 12, "Segments," for disclosures regarding significant customers.

We place temporary cash investments with quality financial institutions and commercial issuers of short-term paper and, by policy, limit the amount of credit exposure in any one financial instrument.

Inventories - Inventories are stated at the lower of weighted-average cost or market. Costs related to inventories include raw materials, direct labor and manufacturing overhead which are included in cost of sales on the consolidated statements of operations. The Company utilizes the average cost method in determining amounts to be removed from inventory.

Revenue Recognition – On January 1, 2018, the Company adopted ASC 606 using the modified retrospective method applied to those contracts which were not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under ASC 606, while prior period amounts are not adjusted and continue to be reported in accordance with our historical accounting under ASC 605. The adoption of ASC 606 represents a change in accounting principle that will more closely align revenue recognition with the transfer of control of the Company's goods and services and provides financial statement readers with enhanced disclosures related to the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers.

In accordance with ASC 606, revenue is recognized when a customer obtains control of promised goods or services. The amount of revenue recognized reflects the consideration to which the Company expects to be entitled to receive in exchange for these goods and services.

Taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction, that are collected by the Company from a customer, are excluded from revenue.

Shipping and handling costs associated with outbound freight after control over a product has transferred to a customer are accounted for as a fulfillment cost and are included in cost of sales.

Product Warranties – Warranties vary by product line and are competitive for the markets in which the Company operates. Warranties generally extend for one to three years from the date of sale, providing customers with assurance that the related product will function as intended. The Company reviews its warranty liability quarterly based on an analysis of actual expenses and failure rates accompanied with estimated future costs and projected failure rate trends. Factors taken into consideration when evaluating our warranty reserve are (i) historical claims for each product, (ii) volume increases, (iii) life of warranty, (iv) historical warranty repair costs and (v) other factors. To the extent that actual experience differs from our estimate, the provision for product warranties will be adjusted in future periods. Actual warranty repair costs are charged against the reserve balance as incurred. See Note 11, "Accrued Expenses."

Product Returns – We estimate product returns, including product exchanges under warranty, based on historical experience. In general, the Company is not contractually obligated to accept returns except for defective product or in instances where the product does not meet the Company's product specifications. However, the Company may permit its customers to return product for other reasons. In certain instances, the Company would generally require a significant cancellation penalty payment by the customer. The Company estimates such returns, where applicable, based upon management's evaluation of historical experience, market acceptance of products produced and known negotiations with customers. Such estimates are deducted from sales and provided for at the time revenue is recognized. Distribution customers often receive what is referred to as "ship and debit" arrangements, whereby Bel will invoice them at an agreed upon unit price upon shipment of product and a price reduction may be granted if the market price of the product declines after shipment. Distributors may also be entitled to special pricing discount credits, and certain customers are entitled to return allowances based on previous sales volumes. Bel deducts estimates for anticipated credits, refunds and returns from sales each quarter based on historical experience.

Goodwill and Identifiable Intangible Assets – Goodwill represents the excess of the aggregate of the following (1) consideration transferred, (2) the fair value of any noncontrolling interest in the acquiree and, (3) if the business combination is achieved in stages, the acquisition-date fair value of our previously held equity interest in the acquiree over the net of the acquisition-date amounts of the identifiable assets acquired and the liabilities assumed.

Identifiable intangible assets consist primarily of patents, licenses, trademarks, trade names, customer lists and relationships, non-compete agreements and technology based intangibles and other contractual agreements. We amortize finite lived identifiable intangible assets over the shorter of their stated or statutory duration or their estimated useful lives, ranging from 1 to 16 years, on a straight-line basis to their estimated residual values and periodically review them for impairment. Total identifiable intangible assets comprise 14.1% and 16.1% in 2018 and 2017, respectively, of our consolidated total assets.

We use the acquisition method of accounting for all business combinations and do not amortize goodwill or intangible assets with indefinite useful lives. Goodwill and intangible assets with indefinite useful lives are tested for possible impairment annually during the fourth quarter of each fiscal year or more frequently if events or changes in circumstances indicate that the asset might be impaired.

Impairment and Disposal of Long-Lived Assets – For definite-lived intangible assets, such as customer relationships, contracts, intellectual property, and for other long-lived assets, such as property, plant and equipment, whenever impairment indicators are present, we perform a review for impairment. We calculate the undiscounted value of the projected cash flows associated with the asset, or asset group, and compare this estimated amount to the carrying amount. If the carrying amount is found to be greater, we record an impairment loss for the excess of book value over the fair value. In addition, in all cases of an impairment review, we re-evaluate the remaining useful lives of the assets and modify them, as appropriate.

For indefinite-lived intangible assets, such as trademarks and trade names, each year and whenever impairment indicators are present, we determine the fair value of the asset and record an impairment loss for the excess of book value over the fair value, if any. In addition, in all cases of an impairment review we re-evaluate whether continuing to characterize the asset as indefinite-lived is appropriate. See Note 4, "Goodwill and Other Intangible Assets," for additional details.

Depreciation - Property, plant and equipment are stated at cost less accumulated depreciation and amortization. Depreciation and amortization are calculated primarily using the straight-line method over the estimated useful life of the asset. The estimated useful lives primarily range from 2 to 33 years for buildings and leasehold improvements, and from 3 to 15 years for machinery and equipment.

Income Taxes - We account for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the consolidated financial statements. Under this method, deferred tax assets and liabilities are determined based on the differences between the financial statement and tax bases of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period that includes the enactment date. See Note 9, "Income Taxes".

We record net deferred tax assets to the extent we believe these assets will more-likely-than-not be realized. In making such determination, we consider all available positive and negative evidence, including future reversals of existing taxable temporary differences, projected future taxable income, tax planning strategies and recent financial operations. We have established valuation allowances for deferred tax assets that are not likely to be realized. In the event we were to determine that we would be able to realize our deferred income tax assets in the future in excess of our net recorded amount, we would adjust the valuation allowance, which would reduce the provision for income taxes.

We establish reserves for tax contingencies when, despite the belief that our tax return positions are fully supported, it is probable that certain positions may be challenged and may not be fully sustained. The tax contingency reserves are analyzed on a quarterly basis and adjusted based upon changes in facts and circumstances, such as the conclusion of federal and state audits, expiration of the statute of limitations for the assessment of tax, case law and emerging legislation. Our effective tax rate includes the effect of tax contingency reserves and changes to the reserves as considered appropriate by management.

Earnings per Share – We utilize the two-class method to report our earnings per share. The two-class method is an earnings allocation formula that determines earnings per share for each class of common stock according to dividends declared and participation rights in undistributed earnings. The Company's Certificate of Incorporation, as amended, states that Class B common shares are entitled to dividends at least 5% greater than dividends paid to Class A common shares, resulting in the two-class method of computing earnings per share. In computing earnings per share, the Company has allocated dividends declared to Class A and Class B based on amounts actually declared for each class of stock and 5% more of the undistributed earnings have been allocated to Class B shares than to the Class A shares on a per share basis. Basic earnings per common share are computed by dividing net earnings by the weighted-average number of common shares outstanding during the period. Diluted earnings per common share, for each class of common stock, are computed by dividing net earnings by the weighted-average number of common shares and potential common shares outstanding during the period. There were no potential common shares outstanding during the years ended December 31, 2018 and 2017 which would have had a dilutive effect on earnings per share.

The earnings and weighted average shares outstanding used in the computation of basic and diluted earnings per share are as follows:

	Years Ended December 31,
	2018		2017
Numerator:
Net earnings (loss)	$	20,709	$	(11,897	)
Less dividends declared:
Class A		522		522
Class B		2,796		2,757
Undistributed earnings (loss)	$	17,391	$	(15,176	)

Undistributed earnings (loss) allocation - basic and diluted:
Class A undistributed earnings (loss)	$	2,999	$	(2,635	)
Class B undistributed earnings (loss)		14,392		(12,541	)
Total undistributed earnings (loss)	$	17,391	$	(15,176	)

Net earnings (loss) allocation - basic and diluted:
Class A net earnings (loss)	$	3,521	$	(2,113	)
Class B net earnings (loss)		17,188		(9,784	)
Net earnings (loss)	$	20,709	$	(11,897	)

Denominator:
Weighted average shares outstanding:
Class A - basic and diluted		2,175		2,175
Class B - basic and diluted		9,939		9,857

Net earnings (loss) per share:
Class A - basic and diluted	$	1.62	$	(0.97	)
Class B - basic and diluted	$	1.73	$	(0.99	)

Research and Development ("R&D") - Our engineering groups are strategically located around the world to facilitate communication with and access to customers' engineering personnel. This collaborative approach enables partnerships with customers for technical development efforts. On occasion, we execute non-disclosure agreements with our customers to help develop proprietary, next generation products destined for rapid deployment. R&D costs are expensed as incurred, and are included in cost of sales on the consolidated statements of operations. Generally, R&D is performed internally for the benefit of the Company. R&D costs include salaries, building maintenance and utilities, rents, materials, administration costs and miscellaneous other items. R&D expenses for the years ended December 31, 2018 and 2017 amounted to $29.4 million and $28.8 million, respectively.

Fair Value Measurements - We utilize the accounting guidance for fair value measurements and disclosures for all financial assets and liabilities and nonfinancial assets and liabilities that are recognized or disclosed at fair value in the consolidated financial statements on a recurring basis or on a nonrecurring basis during the reporting period. The fair value is an exit price, representing the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants based upon the best use of the asset or liability at the measurement date. The Company utilizes market data or assumptions that market participants would use in pricing the asset or liability. We classify our fair value measurements based on the lowest level of input included in the established three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value. These tiers are defined as follows:

Level 1 - Observable inputs such as quoted market prices in active markets

Level 2 - Inputs other than quoted prices in active markets that are either directly or indirectly observable

Level 3 - Unobservable inputs about which little or no market data exists, therefore requiring an entity to develop its own assumptions

For financial instruments such as cash and cash equivalents, accounts receivable, accounts payable and accrued expenses, the carrying amount approximates fair value because of the short maturities of such instruments. See Note 5, "Fair Value Measurements," for additional disclosures related to fair value measurements.

Recently Issued Accounting Standards

Recently Adopted Accounting Standards

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) ("ASU 2014-09"), which amends the existing accounting standards for revenue recognition. ASU 2014-09 is based on principles that govern the recognition of revenue at an amount an entity expects to be entitled when products are transferred to customers. Subsequently, the FASB issued several other updates related to revenue recognition (collectively with ASU 2014-09, the "new revenue standards" or "ASC 606"). We adopted the guidance under the new revenue standards effective January 1, 2018 using the modified retrospective approach by recognizing the cumulative effect of initially applying the new standard as an increase to the opening balance of retained earnings.

Upon adoption, the new revenue standards replaced most existing revenue recognition guidance in U.S. GAAP. Based on our review of representative samples of contracts and other forms of agreements with customers globally and our evaluation of the provisions under the five-step model specified by the new revenue standards, the Company has implemented changes with respect to timing of revenue recognition primarily related to arrangements for which the customer takes the Company's products from a facility holding consignment inventory.

In connection with the modified retrospective application of the new revenue standards, we recorded an adjustment to increase retained earnings of $3.4 million upon the January 1, 2018 adoption date. Apart from this adjustment and the inclusion of additional required disclosures in Note 3, the adoption of the new revenue standards did not have a material impact on the Company's consolidated financial statements.

In January 2016, the FASB issued ASU 2016-01, Financial Instruments-Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. This guidance primarily affects the accounting for equity investments, financial liabilities under the fair value option, and the presentation and disclosure requirements for financial instruments. Under the new guidance, entities will be required to measure certain equity investments at fair value and recognize any changes in fair value in net earnings, unless the investments qualify for the new practicability exception. The new standard was effective for fiscal years, including interim periods within those fiscal years, beginning after December 15, 2017. We adopted this guidance on January 1, 2018. The adoption of this guidance did not have a material impact on the Company's consolidated financial statements.

In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. This guidance addresses diversity in how certain cash receipts and cash payments are presented and classified in the statement of cash flows. This accounting guidance was effective for annual reporting periods beginning after December 31, 2017, including interim reporting periods within those annual reporting periods, and should be applied retrospectively to all periods presented. This guidance was adopted by the Company effective January 1, 2018 and it did not have any impact on the Company's consolidated statement of cash flows in the periods presented.

In October 2016, the FASB issued ASU 2016-16, Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory. Prior U.S. GAAP prohibited the recognition of current and deferred income taxes for intra-entity asset transfer until the asset has been sold to an outside party. The new guidance eliminates the exception and requires an entity to recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. This accounting guidance was effective for annual reporting periods beginning after December 15, 2017, including interim reporting periods within those annual reporting periods, and should be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. This guidance was adopted by the Company effective January 1, 2018 and it did not have a material impact on the Company's consolidated financial position or results of operations.

In January 2017, the FASB issued ASU 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business ("ASU 2017-01"), to clarify the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The definition of a business affects many areas of accounting including acquisitions, disposals, goodwill and consolidation. ASU 2017-01 provides a framework that gives entities a basis for making reasonable judgments about whether a transaction involves an asset or a business. The Company adopted ASU 2017-01 on January 1, 2018, and the guidance will be applied on a prospective basis.

In March 2017, the FASB issued ASU 2017-07, Compensation – Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost ("ASU 2017-07"). This guidance requires that an employer disaggregate the service cost component from the other components of net benefit cost. ASU 2017-07 requires employers to present the service cost component of the net periodic benefit cost in the same income statement line as other employee compensation costs arising from services rendered during the period. The other components of net benefit cost, including interest cost, expected return on plan assets, amortization of prior service costs and actuarial gains/losses, and settlement and curtailment effects, are to be presented outside of any subtotal of operating income. The guidance also specifies that the amount of costs that can be capitalized will be limited to service cost only. The Company adopted the guidance of ASU 2017-07 on January 1, 2018 and elected to apply the practical expedient and use the amounts disclosed in Note 13 to the financial statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2017 as the basis for applying the retrospective application required by the standard. The amounts reclassified within the statement of operations for the year ended December 31, 2017 were not material.

In May 2017, the FASB issued ASU 2017-09, Compensation – Stock Compensation (Topic 718): Scope of Modification Accounting ("ASU 2017-09"). This update provides guidance about which changes to the terms or conditions of a share-based payment require an entity to apply modification accounting in Topic 718. This guidance is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2017. The Company adopted ASU 2017-09 on January 1, 2018, and the guidance within this update will be applied to any future award modifications.

In March 2016, the FASB issued ASU 2016-09, Compensation – Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting, to simplify the accounting for share-based payment transactions including the income tax consequences, classification of awards as either equity or liabilities and classification on the statements of cash flows. Under the new guidance, all excess tax benefits and tax deficiencies (including tax benefits of dividends on share-based payment awards) should be recognized as income tax expense or benefit on the statements of operations. Under prior GAAP, excess tax benefits were recognized in additional paid-in capital while tax deficiencies were recognized either as an offset to accumulated excess tax benefits, if any, or on the statements of operations. The Company adopted this guidance effective January 1, 2017. Certain provisions required retrospective/modified retrospective transition while others were applied prospectively. In accordance with this guidance, the Company reclassified $1.7 million of cumulative excess tax benefits from additional paid-in capital to retained earnings within the equity section of the consolidated balance sheet as of January 1, 2017. The Company has elected to continue its method of estimating forfeitures in determining its stock-based compensation expense throughout the year. The adoption of this guidance did not have a material impact on the Company's consolidated financial statements.

In July 2015, the FASB issued ASU 2015-11, Simplifying the Measurement of Inventory, which requires entities to measure most inventory at the lower of cost and net realizable value, thereby simplifying the current guidance under which an entity must measure inventory at the lower of cost or market. The update is effective for fiscal years beginning after December 15, 2016, and interim periods therein. We adopted this guidance on January 1, 2017. The adoption of this guidance did not have a material impact on the Company's consolidated financial statements.

Accounting Standards Issued But Not Yet Adopted

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) ("ASU 2016-02"), to provide a new comprehensive model for lease accounting. Under this guidance, lessees and lessors should apply a "right-of-use" model in accounting for all leases (including subleases) and eliminate the concept of operating leases and off-balance sheet leases. Recognition, measurement and presentation of expenses will depend on classification as a finance or operating lease. Similar modifications have been made to lessor accounting in-line with revenue recognition guidance. This guidance is effective for annual periods and interim periods within those annual periods beginning after December 15, 2018. The amendments also require certain quantitative and qualitative disclosures about leasing arrangements.

The Company will adopt ASU 2016-02 effective January 1, 2019 using the modified retrospective approach. In connection with the adoption, we will elect to utilize the Comparatives Under 840 Option whereby the Company will continue to present prior period financial statements and disclosures under ASC 840. In addition, we will elect the transition package of three practical expedients permitted within the standard, which eliminates the requirements to reassess prior conclusions about lease identification, lease classification and initial direct costs. Further, we will elect a short-term lease exception policy, permitting us to not apply the recognition requirements of this standard to short-term leases (i.e. leases with terms of 12 months or less) and an accounting policy to account for lease and non-lease components as a single component for certain classes of assets. We are finalizing the necessary changes to our accounting policies, processes, disclosures and internal control over financial reporting, and have implemented a new lease system to facilitate the requirements of the new standard.

Adoption of the new standard is expected to result in the recording of right-of-use assets and lease liabilities related to our operating leases, each in an amount ranging from $18-$22 million, on our consolidated balance sheet as of January 1, 2019. The difference between the lease assets and lease liabilities, which is expected to be immaterial, will be recorded as an adjustment to retained earnings. The standard is not expected to materially affect the Company's consolidated net earnings or have any impact on cash flows.

In January 2017, the FASB issued ASU 2017-04, Intangibles-Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment ("ASU 2017-04"). ASU 2017-04 simplifies how an entity is required to test goodwill for impairment by eliminating Step 2 from the goodwill impairment test. Early adoption is permitted for interim and annual goodwill impairment tests performed on testing dates after January 1, 2017. The Company is required to adopt ASU 2017-04 for its annual or any interim goodwill impairment tests for annual periods beginning after December 15, 2019, and the guidance is to be applied on a prospective basis.

In February 2018, the FASB issued ASU 2018-02, Income Statement – Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. This guidance allows a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the U.S. Tax Cuts and Jobs Act, which was enacted on December 22, 2017. This guidance is effective for all entities for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years and should be applied either in the period of adoption or retrospectively to each period in which the effect of the change in the U.S. federal corporate income tax rate in the U.S. Tax Cuts and Jobs Act is recognized. Early adoption is permitted. We are currently in the process of evaluating this new standard update.

In May 2018, the FASB issued ASU 2018-07, Compensation – Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting, which simplifies the accounting for share-based payments granted to nonemployees for goods and services. This guidance will better align the treatment of share-based payments to nonemployees with the requirements for such share-based payments granted to employees. This guidance is effective for all public entities for fiscal years beginning after December 15, 2018, including interim periods within that year. We are currently in the process of evaluating this new standard update.

In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement. The updated guidance improves the disclosure requirements on fair value measurements. The updated guidance is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Early adoption is permitted for any removed or modified disclosures. The Company is currently assessing the timing and impact of adopting the updated provisions.

In August 2018, the FASB issued ASU 2018-14, Compensation-Retirement Benefits-Defined Benefit Plans-General (Subtopic 715-20): Disclosure Framework – Changes to the Disclosure Requirements for Defined Benefit Plans ("ASU 2018-14"). This guidance removes certain disclosures that are not considered cost beneficial, clarifies certain required disclosures and added additional disclosures. The standard is effective for fiscal years ending after December 15, 2020. The amendments in ASU 2018-14 would need to be applied on a retrospective basis. We are currently assessing the impact the new guidance will have on our disclosures.

In August 2018, the FASB issued ASU 2018-15, Intangibles – Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That is a Service Cost. This guidance aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. This guidance is effective for interim and annual reporting periods beginning after December 15, 2019, and early adoption is permitted. The Company is currently evaluating the impacts that adoption of this ASU will have on its consolidated financial statements.

ACQUISITION

12 Months Ended

Dec. 31, 2018

ACQUISITION [Abstract]

ACQUISITION

2. ACQUISITION

On October 1, 2018, the Company completed the acquisition of BCMZ Precision Engineering Limited ("BCMZ"), a UK manufacturer of precision machined components, for approximately $2.6 million in cash. The transaction was funded with cash on hand. BCMZ has a diversified portfolio of customers in the automotive, aerospace, defense, telecommunication, fibre-optic and medical industrial sectors and has been a long-term key supplier of precision machined components for our Cinch Connectivity Solutions UK business. BCMZ is additionally expected to give Cinch the capability to continue to support key defense and industrial customers across Europe with localized in-house machining ability.

The results of operations of BCMZ have been included in the Company's consolidated financial statements for the period subsequent to its acquisition date. During the year ended December 31, 2018, BCMZ contributed revenue of $0.5 million and an immaterial amount to operating income within the Company's consolidated financial results. During the year ended December 31, 2018, the Company incurred less than $0.1 million of acquisition-related costs relating to BCMZ. These costs are included in selling, general and administrative expense in the accompanying consolidated statement of operations for the year ended December 31, 2018.

As of the acquisition date, balances recorded approximated fair value. The identifiable assets acquired included $0.4 million assigned to customer relationships which will be amortized over its estimated future life of 10 years utilizing the straight-line method.

	As of
	October 1, 2018
	Acquisition Date
Identifiable assets acquired	$	2,986
Liabilities assumed		(1,688	)
Net identifiable assets acquired		1,298
Goodwill		1,290
Net assets acquired	$	2,588

Fair value of consideration transferred	$	2,588

The goodwill noted above related to the BCMZ acquisition will be allocated to the Company's Europe operating segment. The Company is uncertain at this time how much of the goodwill, if any, will be deductible for tax purposes.

The inclusion of BCMZ's results, assuming the acquisition of BCMZ was completed as of January 1, 2017, would not have had a material impact on the Company's consolidated results of operations during 2017 or 2018.

REVENUE

12 Months Ended

Dec. 31, 2018

REVENUE [Abstract]

REVENUE

3. REVENUE

Nature of Goods and Services

Our revenues are substantially derived from sales of our products.

In our connectivity solutions product group, we provide connectors and cable assemblies to the aerospace, military/defense, commercial, rugged harsh environment and communication markets. This group also includes passive jacks, plugs and cable assemblies that provide connectivity in networking equipment, as well as modular plugs and cable assemblies used within the structured cabling system, known as premise wiring.

In our power solutions and protection group, we provide AC-DC and DC-DC power conversion devices and circuit protection products. Applications range from board-mount power to system-level architectures for servers, storage, networking, industrial and transportation.

In our magnetic solutions group, we provide an extensive line of integrated connector modules (ICM), where an Ethernet magnetic solution is integrated into a connector package. Products within the Company's magnetic solutions group are primarily used in networking and industrial applications.

The Company also provides incremental services to our customers in the form of training, technical support, special tooling, and other support as deemed necessary from time to time. For purposes of ASC 606, all such incremental services were concluded to be immaterial in the context of the contracts.

Types of Contracts

Substantially all of the Company's revenue is derived from contracts with its customers under one of the following types of contracts:

Direct with customer: This includes contracts with original equipment manufacturers (OEMs), original design manufacturers (ODMs), and contract manufacturers (CMs). The nature of Bel's products are such that they represent components which are installed in various end applications (e.g., servers, aircraft, missiles and rail applications). The OEM, ODM or CM that purchases our product for further installation are our end customers. Contracts with these customers are broad-based and cover general terms and conditions. Details such as order volume and pricing are typically contained in individual purchase orders, and as a result, we view each product on each purchase order as an individual performance obligation. Incremental services included in the contracts, such as training, tooling and other customer support are determined to be immaterial in the context of the contract, both individually and in the aggregate. Revenue under these contracts is generally recognized at a point in time, generally upon shipping or delivery, which closely mirrors the shipping terms dictated by the applicable contract.

Distributor: Distribution customers buy product directly from Bel and sell it in the marketplace to end customers. Bel contracts directly with the distributor. These contracts are typically global in nature and cover a variety of our product groups. Similar to contracts with OEMs, ODMs and CMs, each product on each purchase order is considered an individual performance obligation. Revenue is recognized at a point in time, generally upon shipping or delivery, which closely mirrors the shipping terms dictated by the applicable contract.

Consignment: These customers operate under a type of concession agreement whereby the Company ships goods to a warehouse or hub, where they will be pulled by the customer at a later date. The terms specified in the consignment contracts specify that the Company will not invoice the customer for product until it is pulled from the warehouse or hub. Once product arrives at the hub, it is generally not returned to Bel unless there is a warranty issue (see "Warranties" section below). Similar to the contracts described above, each product on each purchase order is considered an individual performance obligation. Under ASC 606, it was determined that the majority of these hubs are customer-controlled, and therefore control transfers to the customer upon either delivery from Bel's warehouse, or arrival at the customer-controlled hub, depending upon the applicable shipping terms. Effective January 1, 2018, revenue is recognized as control of the product is transferred to the customer (for customer-controlled hubs, this is at the time product is shipped to the hub). This gives rise to an unbilled receivable balance, as we do not have the right to invoice the customer until product is pulled from the hub.

Licensing Agreements: License agreements are only applicable to our Power Solutions and Protection product group, and include provisions for Bel to receive sales-based royalty income related to the licensing of Bel's patents or other intellectual property (IP) utilized by a third-party entity. Income related to these agreements is tracked by the licensee throughout the year based on their sales of product that utilize Bel's IP, and that data is reported to Bel either on a quarterly or annual basis, with payment generally received within 30 days of the reporting date. Our performance obligation is satisfied upon delivery of the IP at the beginning of the license period, as the licenses are functional in nature. However, the recognition of revenue associated with these licenses is subject to the sales- or usage-based constraint on variable consideration. As such, the Company records a constrained estimate of this variable consideration as royalty income in the period of the underlying customers' product sales, with adjustments made as actual licensee sales data becomes available.

Significant Payment Terms

Contracts with customers indicate the general terms and conditions in which business will be conducted for a set period of time. Individual purchase orders state the description, quantity and price of each product purchased. Payment for products sold under direct contracts with customers or contracts with distributors is typically due in full within 30-90 days from the transfer of title to customer. Payment for products sold under consignment contracts is typically due within 60 days of the customer pulling the product from the hub. Payment due related to our licensing agreements is generally within 30 days of receiving the licensee sales data, which is either on a quarterly or annual basis.

Since the customer agrees to a stated price for each product on each purchase order, the majority of contracts are not subject to variable consideration. However, the "ship and debit" arrangements with distributors, royalty income associated with our licensing agreements, and the product returns described above are each deemed to be variable consideration which requires the Company to make constrained estimates based on historical data.

Disaggregation of Revenue

The following table provides information about disaggregated revenue by product group and sales channel, and includes a reconciliation of the disaggregated revenue to our reportable segments:

	Year Ended December 31, 2018
	North
	America		Asia		Europe		Consolidated

By Product Group:
Connectivity solutions	$	135,454	$	17,140	$	34,130	$	186,724
Magnetic solutions		37,805		137,998		9,604		185,407
Power solutions and protection		98,432		32,065		45,556		176,053
	$	271,691	$	187,203	$	89,290	$	548,184

By Sales Channel:
Direct to customer	$	175,290	$	161,114	$	62,255	$	398,659
Through distribution		96,401		26,089		27,035		149,525
	$	271,691	$	187,203	$	89,290	$	548,184

The cumulative effect of the changes made to our consolidated January 1, 2018 balance sheet for the adoption of ASC 606 were as follows:

	Balance at			Adjustments				Balance at
	December 31,			Due to				January 1,
	2017			ASC 606				2018
Balance Sheet
Unbilled receivables		$	-		$	14,536			$	14,536
Inventory			107,719			(11,044	)			96,675
Other current liabilities			6,204			43				6,247
Retained earnings			147,807			3,449				151,256

In accordance with the new revenue standard requirements, the disclosure of the impact of adoption on our balance sheet as of December 31, 2018 and consolidated statement of operations for the year ended December 31, 2018 was as follows:

	As of December 31, 2018
			Balances		Effect of
	As		Without Adoption		Change
	Reported		of ASC 606		Higher/(Lower)

Balance Sheet
Assets
Unbilled receivables	$	15,799	$	-	$	15,799
Inventories		120,068		131,885		(11,817	)

Liabilities
Other current liabilities		15,061		15,041		20

Equity
Retained earnings		168,695		164,734		3,961

	Year Ended December 31, 2018
			Balances		Effect of
	As		Without Adoption		Change
	Reported		of ASC 606		Higher/(Lower)

Statement of Operations
Net sales	$	548,184	$	546,922	$	1,262
Cost of sales		438,414		437,641		773
Operating income		29,611		29,122		489
Provision for income taxes		2,907		2,930		(23	)
Net earnings		20,709		20,197		512

Contract Assets and Contract Liabilities:

A contract asset results when goods or services have been transferred to the customer but payment is contingent upon a future event, other than passage of time. In the case of our consignment arrangements, we are unable to invoice the customer until product is pulled from the hub by the customer, which generates an unbilled receivable (a contract asset) when revenue is initially recognized.

A contract liability results when cash payments are received or due in advance of our performance obligation being met. We have certain customers who provide payment in advance of product being shipped, which results in deferred revenue (a contract liability).

The balances of the Company's contract assets and contract liabilities at December 31, 2018 and January 1, 2018 are as follows:

	December 31,		January 1,
	2018		2018

Contract assets - current (unbilled receivable)	$	15,799	$	14,536
Contract liabilities - current (deferred revenue)	$	1,036	$	855

The change in balance of our unbilled receivables from January 1, 2018 to December 31, 2018 primarily relates to a timing difference between the Company's performance (i.e. when our product is shipped to a customer-controlled hub) and the point at which the Company can invoice the customer per the terms of the customer contract (i.e. when the customer pulls our product from the customer-controlled hub).

A tabular presentation of the activity within the deferred revenue account for the year ended December 31, 2018 is presented below:

	Year Ended
	December 31, 2018
Balance, January 1	$	855
New advance payments received		6,517
Recognized as revenue during period		(6,322	)
Currency translation		(14	)
Balance, December 31	$	1,036

Transaction Price Allocated to Future Obligations:

The aggregate amount of transaction price allocated to remaining performance obligations that have not been satisfied as of December 31, 2018 related to contracts that exceed one year in duration amounted to $18.2 million, with expected contract expiration dates that range from 2020 - 2024. It is expected that 78% of this aggregate amount will be recognized in 2020, 20% will be recognized in 2021 and the remainder will be recognized in years beyond 2021. The majority of the Company's total backlog of orders at December 31, 2018 is related to contracts that have an original expected duration of one year or less, for which the Company is electing to utilize the practical expedient available within the guidance, and are excluded from the transaction price related to these future obligations. The Company will generally satisfy the remaining performance obligations as we transfer control of the products ordered to our customers. The transaction price related to these future obligations also excludes variable consideration consisting of sales or usage-based royalties earned on licensing agreements. The variability related to these sales or usage-based royalties will be resolved in the periods when the licensee generates sales related to the licensed intellectual property.

Other Practical Expedients:

In the application of the recognition and measurement principles of ASC 606, the Company elected to utilize the following additional practical expedients which are provided for within the guidance:

·	Financing Components: Bel has elected the practical expedient which enables management to disregard the effects of a financing component if the time difference between delivery of goods or services and payment for the goods or services is within one year.

Costs to Obtain a Contract: As part of negotiations, Bel may incur incremental costs to obtain a contract. Incremental costs are only those costs that would not have been incurred if the contract had not been obtained (e.g. sales commissions). Bel has elected the practical expedient that allows incremental costs to obtain a contract to be expensed as incurred when the expected amortization period is one year or less.

GOODWILL AND OTHER INTANGIBLE ASSETS

12 Months Ended

Dec. 31, 2018

GOODWILL AND OTHER INTANGIBLE ASSETS [Abstract]

GOODWILL AND OTHER INTANGIBLE ASSETS

4.	GOODWILL AND OTHER INTANGIBLE ASSETS

Goodwill

Goodwill represents the excess of the purchase price and related acquisition costs over the fair value assigned to the net tangible and other intangible assets acquired in a business acquisition.

The changes in the carrying value of goodwill classified by our segment reporting structure for the years ended December 31, 2018 and 2017 are as follows:

	Total			North America			Asia			Europe

Balance at January 1, 2017:
Goodwill, gross	$	146,542		S	63,364		$	54,508		$	28,670
Accumulated impairment charges		(128,591	)		(54,474	)		(54,508	)		(19,609	)
Goodwill, net		17,951			8,890			-			9,061

Foreign currency translation		2,226			-			-			2,226

Balance at December 31, 2017:
Goodwill, gross		148,768			63,364			54,508			30,896
Accumulated impairment charges		(128,591	)		(54,474	)		(54,508	)		(19,609	)
Goodwill, net		20,177			8,890			-			11,287

Goodwill allocation related to acquisition		1,290			-			-			1,290
Foreign currency translation		(1,650	)		-			-			(1,650	)

Balance at December 31, 2018:
Goodwill, gross		148,408			63,364			54,508			30,536
Accumulated impairment charges		(128,591	)		(54,474	)		(54,508	)		(19,609	)
Goodwill, net	$	19,817		$	8,890		$	-		$	10,927

As discussed in Note 5, Fair Value Measurements, goodwill is reviewed for impairment on a reporting unit basis annually during the fourth quarter of each year and whenever events or changes in circumstances indicate the carrying value of goodwill may not be recoverable. The goodwill impairment test involves a two-step process. In the first step, the fair value of each reporting unit is compared to its carrying value. If the fair value of the reporting unit exceeds its carrying value, goodwill is not impaired and no further testing is required. If the fair value of the reporting unit is less than the carrying value, the second step of the impairment test must be performed to measure the amount of impairment loss. In the second step, the reporting unit's fair value is allocated to all of the assets and liabilities of the reporting unit, including any unrecognized intangible assets, in a hypothetical analysis that calculates the implied fair value of goodwill in the same manner as if the reporting unit was being acquired in a business combination. If the implied fair value of the reporting unit's goodwill is less than the carrying value, the difference is recorded as an impairment loss and a reduction to goodwill.

We estimated the fair value of these reporting units using a weighting of fair values derived from income and market approaches. Under the income approach, we determine the fair value of a reporting unit based on the present value of estimated future cash flows. Cash flow projections are based on management's estimates of revenue growth rates and operating margins, taking into consideration industry and market conditions. The discount rate used is based on a weighted average cost of capital adjusted for the relevant risk associated with the characteristics of the business and the projected cash flows. The market approach estimates fair value based on market multiples of revenue and earnings derived from comparable publicly traded companies with similar operating and investment characteristics as the reporting unit.

2018 Annual Impairment Test

During the fourth quarter of 2018, the Company completed step one of our annual goodwill impairment test for our reporting units. We concluded that the fair value of each of the Company's reporting units exceeded the respective carrying values and that there was no indication of impairment.

The excess of estimated fair values over carrying value, including goodwill for each of our reporting units that had goodwill as of the 2018 annual impairment test were as follows:

Reporting Unit	% by Which Estimated Fair Value Exceeds Carrying Value
North America		20.3	%
Europe		23.8	%

As noted above, the fair value determined under step one of the goodwill impairment test completed in the fourth quarter of 2018 exceeded the carrying value for each reporting unit. Therefore, there was no impairment of goodwill. However, if the fair value decreases in future periods, the Company may fail step one of the goodwill impairment test and be required to perform step two. In performing step two, the fair value would have to be allocated to all of the assets and liabilities of the reporting unit. Therefore, any potential goodwill impairment charge would be dependent upon the estimated fair value of the reporting unit at that time and the outcome of step two of the impairment test. The fair values of the assets and liabilities of the reporting unit, including the intangible assets, could vary depending on various factors.

The future occurrence of a potential indicator of impairment, such as a decrease in expected net earnings, adverse equity market conditions, a decline in current market multiples, a decline in our common stock price, a significant adverse change in legal factors or business climates, an adverse action or assessment by a regulator, unanticipated competition, strategic decisions made in response to economic or competitive conditions, or a more-likely-than-not expectation that a reporting unit or a significant portion of a reporting unit will be sold or disposed of, could require an interim assessment for some or all of the reporting units before the next required annual assessment. In the event of significant adverse changes of the nature described above, it may be necessary for us to recognize an additional non-cash impairment of goodwill, which could have a material adverse effect on our consolidated financial condition and results of operations.

2017 Annual Impairment Test

Based on annual impairment tests performed in the prior year, there was no indication of goodwill impairment at the October 1, 2017 testing date.

Other Intangible Assets

Other identifiable intangible assets include patents, technology, license agreements, non-compete agreements and trademarks. Amounts assigned to these intangible assets have been determined by management. Management considered a number of factors in determining the allocations, including valuations and independent appraisals. Trademarks have indefinite lives and are reviewed for impairment on an annual basis. Other intangible assets, excluding trademarks, are being amortized over 1 to 16 years.

The Company tests indefinite-lived intangible assets for impairment using a fair value approach, the relief-from-royalty method (a form of the income approach). At December 31, 2018, the Company's indefinite-lived intangible assets related to the trademarks acquired in the Power Solutions, Connectivity Solutions, Cinch and Fibreco acquisitions.

The components of definite and indefinite-lived intangible assets are as follows:

	December 31, 2018						December 31, 2017
	Gross Carrying		Accumulated		Net Carrying		Gross Carrying		Accumulated		Net Carrying
	Amount		Amortization		Amount		Amount		Amortization		Amount

Patents, licenses and technology	$	38,845	$	18,281	$	20,564	$	39,218	$	14,926	$	24,292
Customer relationships		44,588		14,193		30,395		44,704		11,478		33,226
Non-compete agreements		2,683		2,683		-		2,711		2,711		-
Trademarks		11,770		40		11,730		11,888		40		11,848

	$	97,886	$	35,197	$	62,689	$	98,521	$	29,155	$	69,366

Amortization expense was $6.4 million and $6.7 million in 2018 and 2017, respectively.

Estimated amortization expense for intangible assets for the next five years is as follows:

December 31,	Amortization Expense

2019	$	6,289
2020		6,263
2021		6,248
2022		4,877
2023		3,621

2018 Annual Impairment Test

The Company completed its annual indefinite-lived intangible assets impairment test during the fourth quarter of 2018, noting no impairment. Management has concluded that the fair value of these trademarks exceeded the related carrying values at December 31, 2018 and that there was no indication of impairment.

FAIR VALUE MEASUREMENTS

12 Months Ended

Dec. 31, 2018

FAIR VALUE MEASUREMENTS [Abstract]

FAIR VALUE MEASUREMENTS

5.	FAIR VALUE MEASUREMENTS

As of December 31, 2017, the Company held certain financial assets that are measured at fair value on a recurring basis. These consisted of securities that are among the Company's investments in a rabbi trust which are intended to fund the Company's Supplemental Executive Retirement Plan ("SERP") obligations, and other marketable securities described below. The securities that are held in the rabbi trust are categorized as available-for-sale securities and are included as other assets in the accompanying consolidated balance sheets at December 31, 2017. The gross unrealized gains associated with the investments held in the rabbi trust were $0.2 million at December 31, 2017. Such unrealized gains are included, net of tax, in accumulated other comprehensive income. During 2018, the Company sold its securities and realized a gain on sale of $0.2 million. The proceeds of $1.3 million were reinvested in other securities within the rabbi trust.

As of December 31, 2018 and 2017, our available-for-sale securities, which primarily consist of investments held in a rabbi trust of $1.4 million and $1.5 million, respectively, are measured at fair value using quoted prices in active markets for identical assets (Level 1) inputs. The Company does not have any financial assets measured at fair value on a recurring basis categorized as Level 3, and there were no transfers in or out of Level 1, Level 2 or Level 3 during 2018 or 2017. There were no changes to the Company's valuation techniques used to measure asset fair values on a recurring or nonrecurring basis during 2018.

There were no financial assets accounted for at fair value on a nonrecurring basis as of December 31, 2018 or 2017.

The Company has other financial instruments, such as cash and cash equivalents, accounts receivable, restricted cash, accounts payable, accrued expenses and notes payable, which are not measured at fair value on a recurring basis but are recorded at amounts that approximate fair value due to their liquid or short-term nature. The fair value of the Company's long-term debt is estimated using a discounted cash flow method based on interest rates that are currently available for debt issuances with similar terms and maturities. At December 31, 2018 and 2017, the estimated fair value of total debt was $117.9 million and $124.8 million, respectively, compared to a carrying amount of $114.2 million and $122.7 million, respectively. The Company did not have any other financial liabilities within the scope of the fair value disclosure requirements as of December 31, 2018 and 2017.

Nonfinancial assets and liabilities, such as goodwill, indefinite-lived intangible assets and long-lived assets, are accounted for at fair value on a nonrecurring basis. These items are tested for impairment upon the occurrence of a triggering event or in the case of goodwill, on at least an annual basis. See Note 4, "Goodwill and Other Intangible Assets," for further information about goodwill and other indefinite-lived intangible assets.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

OTHER ASSETS

12 Months Ended

Dec. 31, 2018

OTHER ASSETS [Abstract]

OTHER ASSETS

6.	OTHER ASSETS

At December 31, 2018 and 2017, the Company has obligations of $18.7 million and $19.1 million, respectively, associated with its SERP. As a means of informally funding these obligations, the Company has invested in life insurance policies related to certain employees and marketable securities held in a rabbi trust. At December 31, 2018 and 2017, these assets had a combined value of $13.0 million and $14.0 million, respectively.

Company-Owned Life Insurance

Investments in company-owned life insurance policies ("COLI") were made with the intention of utilizing them as a long-term funding source for the Company's SERP obligations. However, the cash surrender value of the COLI does not represent a committed funding source for these obligations. Any proceeds from these policies are subject to claims from creditors. The cash surrender value of the COLI of $11.6 million and $12.3 million at December 31, 2018 and 2017, respectively, is included in other assets in the accompanying consolidated balance sheets. The volatility in global equity markets in recent years has also had an effect on the cash surrender value of the COLI policies. The Company recorded (expense) income to account for the (decrease) increase in cash surrender value in the amount of ($0.4) million and $1.3 million during the years ended December 31, 2018 and 2017, respectively. These fluctuations in the cash surrender value were allocated between cost of sales and selling, general and administrative expenses on the consolidated statements of operations for the years ended December 31, 2018 and 2017. The allocation is consistent with the costs associated with the long-term employee benefit obligations that the COLI is intended to fund.

Other Investments

At December 31, 2018 and 2017, the Company held, in the aforementioned rabbi trust, available-for-sale investments at a cost of $1.4 million and $1.3 million, respectively. Together with the COLI described above, these investments are intended to fund the Company's SERP obligations and are classified as other assets in the accompanying consolidated balance sheets. The Company monitors these investments for impairment on an ongoing basis. At December 31, 2018 and 2017, the fair market value of these investments was $1.4 million and $1.5 million, respectively. The gross unrealized gain of $0 and $0.2 million at December 31, 2018 and 2017, respectively, has been included, net of tax, in accumulated other comprehensive income (loss).

INVENTORIES

12 Months Ended

Dec. 31, 2018

INVENTORIES [Abstract]

INVENTORIES

7.	INVENTORIES

The components of inventories are as follows:

	December 31,
	2018		2017
Raw materials	$	63,348	$	46,712
Work in progress		21,441		17,688
Finished goods		35,279		43,319
Inventories	$	120,068	$	107,719

PROPERTY, PLANT AND EQUIPMENT, NET

12 Months Ended

Dec. 31, 2018

PROPERTY, PLANT AND EQUIPMENT, NET [Abstract]

PROPERTY, PLANT AND EQUIPMENT, NET

8.	PROPERTY, PLANT AND EQUIPMENT, NET

Property, plant and equipment, net consist of the following:

	December 31,
	2018			2017
Land	$	2,251		$	2,259
Buildings and improvements		30,119			30,761
Machinery and equipment		126,747			122,773
Construction in progress		4,687			1,511
		163,804			157,304
Accumulated depreciation		(119,872	)		(113,809	)
Property, plant and equipment, net	$	43,932		$	43,495

Depreciation expense for the years ended December 31, 2018 and 2017 was $11.8 million and $14.0 million, respectively.

INCOME TAXES

12 Months Ended

Dec. 31, 2018

INCOME TAXES [Abstract]

INCOME TAXES

9. INCOME TAXES

The Company and its subsidiaries file income tax returns in the U.S. federal jurisdiction and various states and foreign jurisdictions. The Company is no longer subject to U.S. federal examinations by tax authorities for years before 2015 and for state examinations before 2012. Regarding foreign subsidiaries, the Company is no longer subject to examination by tax authorities for years before 2008 in Asia and generally 2010 in Europe.

At December 31, 2018 and 2017, the Company has approximately $28.9 million and $30.4 million, respectively, of liabilities for uncertain tax positions ($1.4 million and $2.5 million, respectively, is included in other current liabilities on the consolidated balance sheets and $27.5 million and $27.9 million, respectively, is included in liability for uncertain tax positions on the consolidated balance sheets). These amounts, if recognized, would reduce the Company's effective tax rate. As of December 31, 2018, approximately $1.1 million of the Company's liabilities for uncertain tax positions are expected to be resolved during the next twelve months by way of expiration of the related statute of limitations.

As a result of the expiration of the statutes of limitations for specific jurisdictions, it is reasonably possible that the related unrecognized benefits for tax positions taken regarding previously filed tax returns may change materially from those recorded as liabilities for uncertain tax positions in the Company's consolidated financial statements at December 31, 2018. A total of $1.1 million of the liability for uncertain tax positions, of which $1.0 million related to the 2008 tax year is scheduled to expire on June 1, 2019. The remaining $0.1 million relates to the 2015 tax year and is scheduled to expire on September 15, 2019. A total of $2.5 million of the liability for uncertain tax positions expired during the year ended December 31, 2018, of which $1.1 million related to the 2006 tax year and $1.4 million related to the 2014 tax year.

A reconciliation of the beginning and ending amount of the liability for uncertain tax positions, including the portion included in income taxes payable, is as follows:

	Year Ended December 31,
	2018			2017
Liability for uncertain tax positions - January 1	$	30,430		$	27,828
Additions based on tax positions
related to the current year		1,703			2,168
Additions relating to acquisitions		-			-
Translation adjustment		(657	)		804
Settlement/expiration of statutes of limitations		(2,525	)		(370	)
Liability for uncertain tax positions - December 31	$	28,951		$	30,430

The Company's policy is to recognize interest and penalties related to uncertain tax positions as a component of the current provision for income taxes. During the years ended December 31, 2018 and 2017, the Company recognized $1.3 million and $0.9 million, respectively, in interest and penalties in the consolidated statements of operations. During the years ended December 31, 2018 and 2017, the Company recognized a benefit of $0.3 million and zero, respectively, for the reversal of such interest and penalties, relating to the expiration of statues of limitations and settlement of a liability for uncertain tax positions, respectively. The Company has approximately $3.8 million and $3.2 million accrued for the payment of interest and penalties at December 31, 2018 and 2017, respectively, which is included in both income taxes payable and liability for uncertain tax positions in the consolidated balance sheets.

The Company's total earnings (loss) before provision (benefit) for income taxes included earnings (loss) from domestic operations of $0.3 million and ($2.0) million for 2018 and 2017, respectively, and earnings (loss) before provision (benefit) for income taxes from foreign operations of $23.3 million and $11.7 million for 2018 and 2017, respectively.

The provision (benefit) for income taxes consists of the following:

	Years Ended December 31,
	2018			2017
Current:
Federal	$	(3,517	)	$	16,055
State		152			115
Foreign		3,782			5,685
		417			21,855
Deferred:
Federal		2,895			(1,312	)
State		196			(329	)
Foreign		(601	)		1,326
		2,490			(315	)

	$	2,907		$	21,540

A reconciliation of taxes on income computed at the U.S. federal statutory rate to amounts provided is as follows:

	Years Ended December 31,
	2018					2017
	$			%		$			%
Tax provision computed at the
federal statutory rate	$	4,959		21	%	$	3,375		35	%
Increase (decrease) in taxes resulting from:
Different tax rates applicable to foreign operations		1,231		5	%		(2,531	)	(26	%)

(Reversal of) increase in liability for uncertain
tax positions - net		(822	)	(3	%)		1,082		11	%

Impact of U.S. Tax Reform		(2,628	)	(11	%)		19,171		199	%

Utilization of research and experimentation, solar and foreign
tax credits		(300	)	(1	%)		(272	)	(3	%)

State taxes, net of federal benefit		322		1	%		(261	)	(3	%)

Foreign tax on gain, net of federal benefit		-		0	%		1,223		13	%

Other, including qualified production activity credits, SERP/COLI
income, under/(over) accruals, unrealized foreign exchange gains
and amortization of purchase accounting intangibles		145		1	%		(247	)	(3	%)
Tax provision computed at the Company's
effective tax rate	$	2,907		12	%	$	21,540		223	%

The Company holds an offshore business license from the government of Macao. With this license, a Macao offshore company named Bel Fuse (Macao Commercial Offshore) Limited has been established to handle the Company's sales to third-party customers in Asia. Sales by this company consist of products manufactured in the PRC. This company is not subject to Macao corporate profit taxes which are imposed at a tax rate of 12%. On September 21, 2018, the Executive Council of the Macao SAR Government proposed to abolish the existing Offshore Law. It is proposed that the existing law and the relevant regulations related to the offshore business will be abolished, and that the operating permit to carry on offshore business will be terminated on January 1, 2021. The Company is currently looking at other options for the Company's operations. Additionally, the Company established TRP International, a China Business Trust ("CBT"), when it acquired the TRP group, as previously discussed. Sales by the CBT consists of products manufactured in the PRC and sold to third-party customers inside and outside Asia. The CBT is not subject to PRC income taxes, which are generally imposed at a tax rate of 25%.

As of December 31, 2018, the Company has gross foreign income tax net operating losses ("NOL") of $35.6 million, foreign tax credits of $0.3 million and capital loss carryforwards of $0.2 million which amount to a total of $8.2 million of deferred tax assets. The Company has established valuation allowances totaling $8.2 million against these deferred tax assets. In addition, the Company has gross federal and state income tax NOLs of $2.1 million, including $1.8 million of NOLs acquired from Array, which amount to $0.4 million of deferred tax assets and tax credit carryforwards of $1.5 million. The Company has established valuation allowances of $1.0 million against these deferred tax assets. The foreign NOL's can be carried forward indefinitely, the NOL acquired from Array expires at various times during 2026 – 2027, the state NOL's expire at various times during 2019 – 2032 and the tax credit carryforwards expire at various times during 2025 - 2034.

The Company's intention is to repatriate certain amounts of cash from its China operations, which include its wholly owned PRC subsidiary, Dongguan Transpower Electric Products Co., Ltd, a Chinese Limited Liability Company, to the U.S. Applicable income and dividend withholding taxes of $0.4 million have been reflected in the accompanying consolidated statements of operations for the year ended December 31, 2018.

During the fourth quarter of 2018, the Company completed the analysis of the impacts of the U.S. tax reform and recognized the tax consequences of all unremitted foreign earnings. At December 31, 2017, we had made a reasonable estimate of the effects on our existing deferred tax balances and the one-time transition tax in which we recognized a provisional amount of $18.1 million, which was included as a component of income tax expense from continuing operations. On the basis of revised earnings and profit computations that were completed during the year ended December 31, 2018, the Company recognized a measurement-period adjustment reducing the deemed repatriation tax by $2.6 million, resulting in the reduction of the Company's provisional estimate from $18.1 million to $15.5 million. After payments made during 2018, the remaining deemed repatriation taxes payable of $10.8 million is included in other current liabilities on the Company's consolidated balance sheet at December 31, 2018 due to an Internal Revenue Service notice received in December 2018.

Except for the distribution noted above, management's intention is to permanently reinvest the remaining unremitted earnings of our foreign subsidiaries as of December 31, 2018. Due to the practicality of determining the deferred taxes on outside basis differences in our investments in our foreign subsidiaries, we have not provided for deferred taxes on outside basis differences and determined that these basis differences will be indefinitely reinvested.

Components of deferred income tax assets are as follows:

	December 31,
	2018			2017
	Tax Effect			Tax Effect

Deferred tax assets:
State tax credits	$	1,000		$	1,033
Unfunded pension liability		605			1,139
Reserves and accruals		2,483			2,828
Federal, state and foreign net operating loss
and credit carryforwards		8,370			10,524
Depreciation		850			917
Other accruals		5,641			4,915
Total deferred tax assets		18,949			21,356
Deferred tax liabilities:
Depreciation		1,666			989
Amortization		7,930			8,490
Other accruals		893			946
Total deferred tax liabilities		10,489			10,425
Valuation allowance		9,200			8,343
Net deferred tax (liabilities)/assets	$	(740	)	$	2,588

The Company continues to monitor proposed legislation affecting the taxation of transfers of U.S. intangible property and other potential tax law changes.

DEBT

12 Months Ended

Dec. 31, 2018

DEBT [Abstract]

DEBT

10.

DEBT

At December 31, 2018 and 2017, borrowings outstanding related to the respective term loans described below were $116.0 million and $125.0 million, respectively, with no borrowings outstanding under the applicable revolver at either date. The unused credit available under the applicable credit facility was $75.0 million at each of December 31, 2018 and December 31, 2017. At December 31, 2018 and 2017, the carrying value of the debt on the consolidated balance sheets is reflected net of $1.8 million and $2.3 million, respectively, of deferred financing costs.

The interest rate in effect at December 31, 2018 was 4.31%, which consisted of LIBOR of 2.56% plus the Company's margin of 1.75%. The interest rate in effect at December 31, 2017 was 3.38%, which consisted of LIBOR of 1.63% plus the Company's margin of 1.75%. In connection with its outstanding borrowings and amortization of the deferred financing costs described below, the Company incurred $5.3 million and $6.8 million of interest expense during the years ended December 31, 2018 and 2017, respectively.

2014 Credit and Security Agreement

On June 19, 2014, the Company entered into a senior Credit and Security Agreement with KeyBank National Association ("KeyBank"), as administrative agent and lender, which was amended on June 30, 2014 principally to add a syndicate of additional lenders (as so amended, the "2014 CSA"). The 2014 CSA consisted of (i) a $50 million revolving credit facility ("Revolver"), (ii) a $145 million term loan facility ("Term Loan") and (iii) a $70 million delayed draw term loan ("DDTL"). The maturity date of the 2014 CSA was June 18, 2019. The Company recorded $5.8 million of deferred financing costs associated with the 2014 CSA, to be amortized through interest expense over the 5-year term of the agreement.

2016 Amendment

In March 2016, the Company amended the terms of the 2014 CSA to modify (i) the date by which the Company was obligated to make excess cash flow prepayments in 2016 on account of excess cash flow achieved for fiscal year 2015, (ii) the method of application of mandatory and voluntary prepayments related to the Company's loans, and (iii) the maximum Leverage Ratio of the Company allowed under the 2014 CSA for the period from the effective date of the amendment through September 2016. In connection with this amendment to the 2014 CSA, the Company paid $0.7 million of deferred financing costs, and the modification to the amortization schedule resulted in $0.5 million of existing deferred financing costs to be accelerated and recorded as interest expense during the first quarter of 2016.

2017 Amendment and Refinancing

On December 11, 2017, the Company refinanced the borrowings under the 2014 CSA and further amended its terms as follows: (i) extended the maturity date to December 11, 2022, (ii) revised the amount of the Term Loan to $125.0 million, (iii) increased the amount available under the Revolver to $75.0 million, (iv) reduced mandatory amortization payments over the first four years of the new 5-year term; and (v) reduced the pricing grid related to interest expense, among other items (the "2017 CSA"). Concurrent with its entry into the 2017 CSA, the Company's outstanding balances due under the DDTL and Revolver were paid in full. In connection with 2017 CSA and related refinancing, the Company paid $1.8 million of deferred financing costs. Due to the magnitude of the modifications to the 2014 CSA, including a reduction in the number of lenders within the syndicate, this modification was deemed an extinguishment of the balances outstanding related to the Term Loan and DDTL that originated under the 2014 CSA. As a result, $1.0 million of existing deferred financing costs were accelerated and recorded as interest expense during the fourth quarter of 2017.

Under the terms of the 2017 CSA, the Company is entitled, subject to the satisfaction of certain conditions, to request additional commitments under the revolving credit facility or term loans in the aggregate principal amount of up to $75 million to the extent that existing or new lenders agree to provide such additional commitments and/or term loans.

The obligations of the Company under the 2017 CSA are guaranteed by certain of the Company's material U.S. subsidiaries (together with the Company, the "Loan Parties") and are secured by a first priority security interest in substantially all of the existing and future personal property of the Loan Parties, certain material real property of the Loan Parties and certain of the Loan Parties' material U.S. subsidiaries, including 65% of the voting capital stock of certain of the Loan Parties' direct foreign subsidiaries.

The borrowings under the 2017 CSA bear interest at a rate equal to, at the Company's option, either (1) LIBOR, plus a margin ranging from 1.375% per annum to 2.75% per annum depending on the Company's leverage ratio, or (2)(a) an "Alternate Base Rate," which is the highest of (i) the federal funds rate plus 0.50%, (ii) KeyBank's prime rate and (iii) the LIBOR rate with a maturity of one month plus 1.00%, plus (b) a margin ranging from 0.375% per annum to 1.75% per annum, depending on the Company's leverage ratio.

The 2017 CSA contains customary representations and warranties, covenants and events of default and financial covenants that measure (i) the ratio of the Company's total funded indebtedness, on a consolidated basis, to the amount of the Company's consolidated EBITDA, as defined, ("Leverage Ratio") and (ii) the ratio of the amount of the Company's consolidated EBITDA to the Company's consolidated fixed charges ("Fixed Charge Coverage Ratio"). If an event of default occurs, the lenders under the CSA would be entitled to take various actions, including the acceleration of amounts due thereunder and all actions permitted to be taken by a secured creditor. At December 31, 2018, the Company was in compliance with its debt covenants, including its most restrictive covenant, the Fixed Charge Coverage Ratio.

Scheduled principal payments of the total debt outstanding at December 31, 2018 are as follows (in thousands):

2019	$	2,974
2020		5,948
2021		5,948
2022		101,118
Total long-term debt		115,988
Less: Current maturities of long-term debt		(2,974	)
Noncurrent portion of long-term debt	$	113,014

ACCRUED EXPENSES

12 Months Ended

Dec. 31, 2018

ACCRUED EXPENSES [Abstract]

ACCRUED EXPENSES

11. ACCRUED EXPENSES

Accrued expenses consist of the following:

	December 31,
	2018		2017
Sales commissions	$	2,609	$	2,461
Subcontracting labor		1,550		1,408
Salaries, bonuses and related benefits		18,275		16,531
Warranty accrual		1,078		1,769
Other		8,778		8,339
	$	32,290	$	30,508

The change in warranty accrual during 2018 primarily related to repair costs incurred and adjustments to pre-existing warranties. There were no new material warranty charges incurred during 2018.

SEGMENTS

12 Months Ended

Dec. 31, 2018

SEGMENTS [Abstract]

SEGMENTS

12. SEGMENTS

The Company operates in one industry with three reportable operating segments, which are geographic in nature. The segments consist of North America, Asia and Europe. The primary criteria by which financial performance is evaluated and resources are allocated are net sales and income from operations. The following is a summary of key financial data:

	Years Ended December 31,
	2018			2017
Net Sales to External Customers:
North America	$	271,691		$	245,834
Asia		187,203			167,680
Europe		89,290			78,097
	$	548,184		$	491,611

Net Sales:
North America	$	284,245		$	257,541
Asia		279,965			249,506
Europe		103,853			89,765
Less intercompany
net sales		(119,879	)		(105,201	)
	$	548,184		$	491,611

Income from Operations:
North America	$	6,769		$	6,195
Asia		16,621			8,964
Europe		6,221			2,227
	$	29,611		$	17,386

Total Assets:
North America	$	177,902		$	172,674
Asia		175,713			152,447
Europe		89,909			106,144
	$	443,524		$	431,265

Capital Expenditures:
North America	$	4,836		$	1,734
Asia		5,661			2,617
Europe		1,097			2,074
	$	11,594		$	6,425

Depreciation and Amortization Expense:
North America	$	8,906		$	10,641
Asia		5,842			6,728
Europe		3,459			3,349
	$	18,207		$	20,718

Net Sales – Segment net sales are attributed to individual segments based on the geographic source of the billing for such customer sales. Intercompany sales include finished products manufactured in foreign countries which are then transferred to the United States and Europe for sale; finished goods manufactured in the United States which are transferred to Europe and Asia for sale; and semi-finished components manufactured in the United States which are sold to Asia for further processing. Income from operations represents net sales less operating costs and expenses and does not include any amounts related to intercompany transactions.

The following items are included in the segment data presented above:

Entity-Wide Information

The following is a summary of entity-wide information related to the Company's net sales to external customers by geographic area and by major product line.

	Years Ended December 31,
		2018		2017
Net Sales by Geographic Location:

United States		$	271,691	$	245,834
Macao			187,204		167,681
United Kingdom			26,340		24,110
Slovakia			24,123		14,194
Germany			15,298		13,857
Switzerland			13,279		15,366
All other foreign countries			10,249		10,569
Consolidated net sales		$	548,184	$	491,611

Net Sales by Major Product Line:

Connectivity solutions		$	186,724	$	170,337
Magnetic solutions			185,407		161,011
Power solutions and protection			176,053		160,263
Consolidated net sales		$	548,184	$	491,611

The following is a summary of long-lived assets by geographic area as of December 31, 2018 and 2017:

	December 31,
		2018		2017
Long-lived Assets by Geographic Location:

United States		$	27,505	$	27,594
People's Republic of China (PRC)			29,563		30,151
Slovakia			6,475		7,625
Switzerland			3,023		3,632
United Kingdom			2,330		1,345
All other foreign countries			1,117		1,121
Consolidated long-lived assets		$	70,013	$	71,468

Long-lived assets consist of property, plant and equipment, net and other assets of the Company that are identified with the operations of each geographic area.

The territory of Hong Kong became a Special Administrative Region ("SAR") of the PRC in the middle of 1997. The territory of Macao became a SAR of the PRC at the end of 1999. Management cannot presently predict what future impact this will have on the Company, if any, or how the political climate in the PRC will affect the Company's contractual arrangements in the PRC. A significant portion of the Company's manufacturing operations and approximately 41.3% of its identifiable assets are located in Asia.

Net Sales to Major Customers

The Company had net sales to one customer in excess of ten percent of consolidated net sales in each of 2018 and 2017. The net sales associated with this customer was $67.7 million in 2018 (12.3% of sales) and $57.7 million in 2017 (11.7% of sales). Net sales related to this significant customer were primarily reflected in the Asia operating segment during each of the two years discussed.

RETIREMENT FUND AND PROFIT SHARING PLAN

12 Months Ended

Dec. 31, 2018

RETIREMENT FUND AND PROFIT SHARING PLAN [Abstract]

RETIREMENT FUND AND PROFIT SHARING PLAN

13. RETIREMENT FUND AND PROFIT SHARING PLAN

The Company maintains the Bel Fuse Inc. Employees' Savings Plan, a defined contribution plan that is intended to meet the applicable requirements for tax-qualification under sections 401(a) and (k) of the Internal Revenue Code of 1986, as amended (the "Code"). The Employees' Savings Plan allows eligible employees to voluntarily contribute a percentage of their eligible compensation, subject to Code limitations, which contributions are matched by the Company in an amount equal to 100% of the first 1% of compensation contributed by participants, and 50% of the next 5% of compensation contributed by participants. The Company's matching contribution is made in the form of Bel Fuse Inc. Class A common stock. Prior to January 1, 2012, the Company's matching and profit sharing contributions were made in the form of shares of Bel Fuse Inc. Class A and Class B common stock. The expense for the years ended December 31, 2018 and 2017 amounted to $1.3 million and $1.2 million, respectively. As of December 31, 2018, the plan owned 114,839 and 127,733 shares of Bel Fuse Inc. Class A and Class B common stock, respectively.

The Company's subsidiaries in Asia have a retirement fund covering substantially all of their Hong Kong based full-time employees. Eligible employees contribute up to 5% of salary to the fund. In addition, the Company must contribute a minimum of 5% of eligible salary, as determined by Hong Kong government regulations. The Company currently contributes 7% of eligible salary in cash or Company stock. The expense for the years ended December 31, 2018 and 2017 amounted to approximately $0.3 million in each year. As of December 31, 2018, the plan owned 3,323 and 17,342 shares of Bel Fuse Inc. Class A and Class B common stock, respectively.

The Company maintains a SERP, which is designed to provide a limited group of key management and other key employees of the Company with supplemental retirement and death benefits. Participants in the SERP are selected by the Compensation Committee of the Board of Directors. The SERP initially became effective in 2002 and was amended and restated in April 2007 to conform with applicable requirements of Section 409A of the Internal Revenue Code and to modify the provisions regarding benefits payable in connection with a change in control of the Company. The Plan is unfunded. Benefits under the SERP are payable from the general assets of the Company, but the Company has established a rabbi trust which includes certain life insurance policies in effect on participants as well as other investments to partially cover the Company's obligations under the Plan. See Note 6, "Other Assets," for further information on these assets.

The benefits available under the SERP vary according to when and how the participant terminates employment with the Company. If a participant retires (with the prior written consent of the Company) on his normal retirement date (65 years old, 20 years of service, and 5 years of Plan participation), his normal retirement benefit under the Plan would be annual payments equal to 40% of his average base compensation (calculated using compensation from the highest five consecutive calendar years of Plan participation), payable in monthly installments for the remainder of his life. If a participant retires early from the Company (55 years old, 20 years of service, and five years of Plan participation), his early retirement benefit under the Plan would be an amount (i) calculated as if his early retirement date were in fact his normal retirement date, (ii) multiplied by a fraction, with the numerator being the actual years of service the participant has with the Company and the denominator being the years of service the participant would have had if he had retired at age 65, and (iii) actuarially reduced to reflect the early retirement date. If a participant dies prior to receiving 120 monthly payments under the Plan, his beneficiary would be entitled to continue receiving benefits for the shorter of (i) the time necessary to complete 120 monthly payments or (ii) 60 months. If a participant dies while employed by the Company, his beneficiary would receive, as a survivor benefit, an annual amount equal to (i) 100% of the participant's annual base salary at date of death for one year, and (ii) 50% of the participant's annual base salary at date of death for each of the following four years, each payable in monthly installments. The Plan also provides for disability benefits, and a forfeiture of benefits if a participant terminates employment for reasons other than those contemplated under the Plan. The expense related to the Plan for the years ended December 31, 2018 and 2017 amounted to $1.8 million and $1.7 million, respectively.

Net Periodic Benefit Cost

The net periodic benefit cost related to the SERP consisted of the following components during the years ended December 31, 2018 and 2017:

	Years Ended December 31,
	2018		2017

Service Cost	$	732	$	700
Interest Cost		664		673
Net amortization		443		375
Net periodic benefit cost	$	1,839	$	1,748

The service cost component of net benefit cost is presented within cost of sales or selling, general and administrative expense on the accompanying statements of operations, in accordance with where compensation cost for the related associate is reported. All other components of net benefit cost, including interest cost and net amortization noted above, are presented within other income/expense, net in the accompanying statements of operations.

Obligations and Funded Status

Summarized information about the changes in plan assets and benefit obligation, the funded status and the amounts recorded at December 31, 2018 and 2017 are as follows:

	Years Ended December 31,
	2018			2017
Fair value of plan assets, January 1	$	-		$	-
Company contributions		325			240
Benefits paid		(325	)		(240	)
Fair value of plan assets, December 31	$	-		$	-
Benefit obligation, January 1	$	19,134		$	16,900
Service cost		732			700
Interest cost		664			673
Benefits paid		(325	)		(240	)
Plan amendments		39			198
Actuarial (gains) losses		(1,568	)		903
Benefit obligation, December 31		18,676			19,134
Underfunded status, December 31	$	(18,676	)	$	(19,134	)

The Company has recorded the 2018 and 2017 underfunded status as a long-term liability on the consolidated balance sheets. The accumulated benefit obligation for the SERP was $16.5 million as of December 31, 2018 and $16.1 million as of December 31, 2017. The aforementioned company-owned life insurance policies and marketable securities held in a rabbi trust had a combined value of $13.0 million and $14.0 million at December 31, 2018 and 2017, respectively. See Note 6, "Other Assets," for additional information on these investments.

The estimated net loss and prior service cost for the SERP that will be amortized from accumulated other comprehensive loss into net periodic benefit cost over the next fiscal year is $0.2 million. The Company expects to make contributions of $0.3 million to the SERP in 2019. The Company had no net transition assets or obligations recognized as an adjustment to other comprehensive income and does not anticipate any plan assets being returned to the Company during 2019, as the plan has no assets.

The following benefit payments, which reflect expected future service, are expected to be paid:

Years Ending
December 31,

2019	$	379
2020		659
2021		679
2022		902
2023		941
2024 - 2028		5,409

The following gross amounts are recognized net of tax in accumulated other comprehensive loss:

	December 31,
	2018		2017
Prior service cost	$	918	$	1,135
Net loss		1,977		3,732
	$	2,895	$	4,867

Actuarial Assumptions

The weighted average assumptions used in determining the periodic net cost and benefit obligation information related to the SERP are as follows:

	Years Ended December 31,
	2018			2017
Net periodic benefit cost:
Discount rate		3.50	%		4.00	%
Rate of compensation increase		3.00	%		3.00	%
Benefit obligation:
Discount rate		4.00	%		3.50	%
Rate of compensation increase		2.50	%		3.00	%

SHARE-BASED COMPENSATION

12 Months Ended

Dec. 31, 2018

SHARE-BASED COMPENSATION [Abstract]

SHARE-BASED COMPENSATION

14. SHARE-BASED COMPENSATION

The Company has an equity compensation program (the "Program") which provides for the granting of "Incentive Stock Options" within the meaning of Section 422 of the Internal Revenue Code of 1986, as amended, non-qualified stock options and restricted stock awards. The Company believes that such awards better align the interest of its employees with those of its shareholders. The 2011 Equity Compensation Plan provides for the issuance of 1.4 million shares of the Company's Class B common stock. At December 31, 2018, 359,100 shares remained available for future issuance under the 2011 Equity Compensation Plan.

The Company records compensation expense in its consolidated statements of operations related to employee stock-based options and awards. The aggregate pretax compensation cost recognized for stock-based compensation amounted to approximately $2.8 million and $3.0 million for 2018 and 2017, respectively, and related solely to restricted stock awards. The Company did not use any cash to settle any equity instruments granted under share-based arrangements during 2018 and 2017. At December 31, 2018 and 2017, the only instruments issued and outstanding under the Program related to restricted stock awards.

Restricted Stock Awards

The Company provides common stock awards to certain officers and key employees. The Company grants these awards, at its discretion, from the shares available under the Program. Unless otherwise provided at the date of grant or unless subsequently accelerated, the shares awarded are typically earned in 25% increments on the second, third, fourth and fifth anniversaries of the award and are distributed provided the employee has remained employed by the Company through such anniversary dates; otherwise the unearned shares are forfeited. The market value of these shares at the date of award is recorded as compensation expense on the straight-line method over the applicable vesting period from the respective award dates, as adjusted for forfeitures of unvested awards. During 2018 and 2017, the Company issued 262,000 shares and 46,400 shares of the Company's Class B common stock, respectively, under a restricted stock plan to various officers and employees.

A summary of the restricted stock activity under the Program for the year ended December 31, 2018 is presented below:

						Weighted Average
Restricted Stock				Weighted Average		Remaining
Awards	Shares			Award Price		Contractual Term

Outstanding at January 1, 2018		424,500		$	23.23	3.0 years
Granted		262,000			24.68
Vested		(129,600	)		21.88
Forfeited		(29,000	)		21.69
Outstanding at December 31, 2018		527,900		$	24.37	3.5 years

As of December 31, 2018, there was $8.7 million of total pretax unrecognized compensation cost included within additional paid-in capital related to non-vested stock based compensation arrangements granted under the restricted stock award plan. That cost is expected to be recognized over a period of 3.8 years. This expense is recorded in cost of sales and SG&A expense based upon the employment classification of the award recipients.

The Company's policy is to issue new shares to satisfy restricted stock awards. Currently the Company believes that substantially all restricted stock awards will vest.

COMMON STOCK	12 Months Ended
COMMON STOCK	Dec. 31, 2018
COMMON STOCK [Abstract]
COMMON STOCK	15. COMMON STOCK As of December 31, 2018, according to regulatory filings, there was one shareholder of the Company's common stock (other than shareholders subject to specific exceptions) with ownership in excess of 10% of Class A outstanding shares with no ownership of the Company's Class B common stock. In accordance with the Company's certificate of incorporation, the Class B Protection clause is triggered if a shareholder owns 10% or more of the outstanding Class A common stock and does not own an equal or greater percentage of all then outstanding shares of both Class A and Class B common stock (all of which common stock must have been acquired after the date of the 1998 recapitalization). In such a circumstance, such shareholder must, within 90 days of the trigger date, purchase Class B common shares, in an amount and at a price determined in accordance with a formula described in the Company's certificate of incorporation, or forfeit its right to vote its Class A common shares. As of December 31, 2018, to the Company's knowledge, this shareholder had not purchased any Class B shares to comply with these requirements. In order to vote its shares at Bel's next shareholders' meeting, this shareholder must either purchase the required number of Class B common shares or sell or otherwise transfer Class A common shares until its Class A holdings are under 10%. As of December 31, 2018, to the Company's knowledge, this shareholder owned 23.6% of the Company's Class A common stock in the aggregate and had not taken steps to either purchase the required number of Class B common shares or sell or otherwise transfer Class A common shares until its Class A holdings fall below 10%. Unless and until this situation is satisfied in a manner permitted by the Company's Restated Certificate of Incorporation, the subject shareholder will not be permitted to vote its shares of common stock. Throughout 2018 and 2017, the Company declared cash dividends on a quarterly basis at a rate of $0.06 per Class A share of common stock and $0.07 per Class B share of common stock. The Company declared and paid cash dividends totaling $3.3 million in each of 2018 and 2017. There are no contractual restrictions on the Company's ability to pay dividends, provided that the Company is not in default under its credit agreements immediately before such payment and after giving effect to such payment.

COMMITMENTS AND CONTINGENCIES

12 Months Ended

Dec. 31, 2018

COMMITMENTS AND CONTINGENCIES [Abstract]

COMMITMENTS AND CONTINGENCIES

16. COMMITMENTS AND CONTINGENCIES

Leases

The Company leases various facilities under operating leases expiring through May 2027. Some of these leases require the Company to pay certain executory costs (such as insurance and maintenance).

Future minimum lease payments for operating leases are approximately as follows:

Year Ending
December 31,

2019	$	7,363
2020		6,017
2021		4,967
2022		3,338
2023		1,194
Thereafter		442
	$	23,321

Rental expense for all leases was approximately $8.0 million and $8.2 million for the years ended December 31, 2018 and 2017, respectively.

Other Commitments

The Company submits purchase orders for raw materials to various vendors throughout the year for current production requirements, as well as forecasted requirements. Certain of these purchase orders relate to special purpose material and, as such, the Company may incur penalties if an order is cancelled. The Company had outstanding purchase orders related to raw materials in the amount of $58.9 million and $45.4 million at December 31, 2018 and December 31, 2017, respectively. The Company also had outstanding purchase orders related to capital expenditures in the amount of $5.2 million and $3.0 million at December 31, 2018 and December 31, 2017, respectively.

Legal Proceedings

The Company is party to a number of legal actions and claims, none of which individually or in the aggregate, in the opinion of management, are expected to have a material adverse effect on the Company's consolidated results of operations or financial position.

In connection with the acquisition of Power Solutions, there is an ongoing claim by the Arezzo Revenue Agency in Italy concerning certain tax matters related to what was then Power-One Asia Pacific Electronics Shenzhen Co. Ltd. (now Bel Power Solutions Asia Pacific Electronics Shenzhen Co. Ltd, or "BPS China") for the years 2004 to 2006. In September 2012, the Tax Court of Arezzo ruled in favor of BPS China and cancelled the claim. In February 2013, the Arezzo Revenue Agency filed an appeal of the Tax Court's ruling. The hearing of the appeal was held on October 2, 2014. On October 13, 2014, BPS China was informed of the Regional Tax Commission of Florence ruling which was in favor of the Arezzo Revenue Agency and against BPS China. An appeal was filed on July 18, 2015 before the Regional Tax Commission of Florence and rejected. On December 5, 2016, the Arezzo Revenue Agency filed an appeal with the Supreme Court and BPS China filed a counter-appeal on January 4, 2017. The Supreme Court has yet to render its judgment. The estimated liability related to this matter is approximately $12.0 million and has been included as a liability for uncertain tax positions on the accompanying consolidated balance sheets. As Bel is fully indemnified in this matter per the terms of the stock purchase agreement with ABB, a corresponding other asset for indemnification is also included in other assets on the accompanying consolidated balance sheets at December 31, 2018 and December 31, 2017.

In 2015, the Company was provided notice of a potential patent infringement claim by Setec Netzwerke AG ("Setec"), a German company for the alleged infringement of their patent EP 306 934 B1. Setec subsequently filed a lawsuit against the Company and three of its subsidiaries in the Regional Court of Dusseldorf, Germany on January 29, 2016 for patent infringement. The Company filed its defense to Setec's Complaint and a nullity lawsuit against Setec's patent on August 31 2016. The Court hearing on infringement took place on March 23, 2017. Upon hearing argument from both parties, the Court issued a decision on April 6, 2017 staying final judgment in the infringement case pending resolution of the nullity lawsuit in the Federal Patents Courts in Munich, Germany. The Federal Patents Courts issued its preliminary opinion regarding the patent-in-suit on March 29, 2018, stating that it considers the patent-in-suit to not be novel over the prior art documents presented in the case. The parties agreed to withdraw from the pending infringement and nullity proceedings and entered into a settlement agreement on June 29, 2018. The Company paid Setec 75,000 Euro in exchange for a perpetual, worldwide royalty-free license to the patent-in-suit and all its counterparts.

In 2015, one of the Company's subsidiaries in the PRC, Dongguan Transpower Electric Products Co., Ltd. ("Dongguan Transpower"), was provided notice of a claim by DG Yu Shing Industrial Development Company Limited against Dongguan Transpower and three other defendants for past due construction costs of approximately $3.2 million. In April 2018, the 3^rd People Court of Dongguan ruled and provided an unfavorable judgment against Dongguan Transpower and two of the other defendants requiring payment of the aforementioned amount. The defendants were held to be jointly and severally liable for approximately $3.2 million in costs. Due to the fact that none of the other defendants had sufficient funds to pay the damages amount, the Court ordered the entire amount (CNY 20,133,174) to be paid by Dongguan Transpower. On May 25, 2018, the Court enforced its order and withdrew the damages amount from Dongguan Transpower's bank accounts. On May 31, 2018, Dongguan Transpower filed an action against the other defendants in CP Court to recoup the damages amount paid pursuant to an indemnification letter dated October 16, 2015. The Court heard arguments on July 2, 2018 and rendered a verdict on July 9, 2018 ordering the Jinmei entities (defendants) to pay CNY 20,133,174 back to Dongguan Transpower together with the incurred interest. On August 27, 2018, Dongguan Transpower received payment of CNY 20,430,203 (approximately $3.2 million) from the defendants and this case was closed.

On June 1, 2018, the Company filed an action against Unipower, LLC in the United States District Court for the Southern District of New York for breach of contract. Specifically, the Company alleges in its Complaint that Unipower has willfully violated the Master Services Agreement ("MSA") entered into by the parties on January 23, 2015 by failing to make payment for the products it contracted for under the MSA. The parties entered into a settlement agreement on December 17, 2018 resolving all outstanding claims and a Stipulation of Dismissal was filed and entered on January 10, 2019.

The Company is not a party to any other legal proceeding, the adverse outcome of which is likely to have a material adverse effect on the Company's consolidated financial condition or results of operations.

ACCUMULATED OTHER COMPREHENSIVE LOSS

12 Months Ended

Dec. 31, 2018

ACCUMULATED OTHER COMPREHENSIVE LOSS [Abstract]

ACCUMULATED OTHER COMPREHENSIVE LOSS

17. ACCUMULATED OTHER COMPREHENSIVE LOSS

The components of accumulated other comprehensive loss as of December 31, 2018 and 2017 are summarized below:

	December 31,
	2018			2017

Foreign currency translation adjustment	$	(22,635	)	$	(16,537	)
Unrealized holding gain on available-for-sale
securities, net of taxes of $0 and $85 as of
December 31, 2018 and 2017		12			145
Unfunded SERP liability, net of taxes of ($680) and ($1,635)
as of December 31, 2018 and 2017		(2,215	)		(3,233	)

Accumulated other comprehensive loss	$	(24,838	)	$	(19,625	)

Changes in accumulated other comprehensive (loss) income by component during the years ended December 31, 2018 and 2017 are as follows. All amounts are net of tax.

				Unrealized Holding
	Foreign Currency			Gains on
	Translation			Available-for-			Unfunded
	Adjustment			Sale Securities			SERP Liability				Total

Balance at January 1, 2017	$	(28,976	)	$	424		$	(2,745	)		$	(31,297	)
Other comprehensive income (loss) before reclassifications		12,439			(279	)		(733	)			11,427
Amounts reclassified from accumulated other
comprehensive income (loss)		-			-			245		(a)		245
Net current period other comprehensive income (loss)		12,439			(279	)		(488	)			11,672

Balance at December 31, 2017		(16,537	)		145			(3,233	)			(19,625	)

Other comprehensive income (loss) before reclassifications		(6,098	)		37			679				(5,382	)
Amounts reclassified from accumulated other
comprehensive income (loss)		-			(170	)		339		(a)		169
Net current period other comprehensive income (loss)		(6,098	)		(133	)		1,018				(5,213	)

Balance at December 31, 2018	$	(22,635	)	$	12		$	(2,215	)		$	(24,838	)

(a)	This reclassification relates to the amortization of prior service costs and gains/losses associated with the Company's SERP plan. This expense is allocated between cost of sales and selling, general and administrative expense based upon the employment classification of the plan participants.

RELATED PARTY TRANSACTIONS	12 Months Ended
RELATED PARTY TRANSACTIONS	Dec. 31, 2018
RELATED PARTY TRANSACTIONS [Abstract]
RELATED PARTY TRANSACTIONS	18. RELATED PARTY TRANSACTIONS In connection with its acquisition of Power Solutions, the Company acquired a 49% interest in a joint venture in the People's Republic of China ("PRC"). The joint venture purchased raw components and other goods from the Company and sold finished goods to the Company as well as to other third parties. The Company did not purchase any inventory from the joint venture during 2017. During the fourth quarter of 2017, the Company divested its 49% interest in the joint venture in exchange for an extinguishment of an accounts payable balance of $0.5 million. As the interest in the joint venture had a carrying value of zero, a $0.5 million gain was recorded within cost of sales during 2017 related to this divestiture.

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)

12 Months Ended

Dec. 31, 2018

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]

Principles of Consolidation

Use of Estimates

Cash Equivalents

Allowance for Doubtful Accounts

Effects of Foreign Currency

Concentration of Credit Risk

We place temporary cash investments with quality financial institutions and commercial issuers of short-term paper and, by policy, limit the amount of credit exposure in any one financial instrument.

Inventories

Revenue Recognition

Shipping and handling costs associated with outbound freight after control over a product has transferred to a customer are accounted for as a fulfillment cost and are included in cost of sales.

Product Warranties

Product Returns

Goodwill and Identifiable Intangible Assets

Impairment and Disposal of Long-Lived Assets

Depreciation

Income Taxes

Earnings per Share

The earnings and weighted average shares outstanding used in the computation of basic and diluted earnings per share are as follows:

	Years Ended December 31,
	2018		2017
Numerator:
Net earnings (loss)	$	20,709	$	(11,897	)
Less dividends declared:
Class A		522		522
Class B		2,796		2,757
Undistributed earnings (loss)	$	17,391	$	(15,176	)

Undistributed earnings (loss) allocation - basic and diluted:
Class A undistributed earnings (loss)	$	2,999	$	(2,635	)
Class B undistributed earnings (loss)		14,392		(12,541	)
Total undistributed earnings (loss)	$	17,391	$	(15,176	)

Net earnings (loss) allocation - basic and diluted:
Class A net earnings (loss)	$	3,521	$	(2,113	)
Class B net earnings (loss)		17,188		(9,784	)
Net earnings (loss)	$	20,709	$	(11,897	)

Denominator:
Weighted average shares outstanding:
Class A - basic and diluted		2,175		2,175
Class B - basic and diluted		9,939		9,857

Net earnings (loss) per share:
Class A - basic and diluted	$	1.62	$	(0.97	)
Class B - basic and diluted	$	1.73	$	(0.99	)

Research and Development ("R&D")

Fair Value Measurements

Level 1 - Observable inputs such as quoted market prices in active markets

Level 2 - Inputs other than quoted prices in active markets that are either directly or indirectly observable

Level 3 - Unobservable inputs about which little or no market data exists, therefore requiring an entity to develop its own assumptions

Recently Adopted Accounting Standards

Recently Issued Accounting Standards

Recently Adopted Accounting Standards

Accounting Standards Issued But Not Yet Adopted

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2018

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]

Earnings and Weighted Average Shares Outstanding used in Computation of Basic and Diluted Earnings Per Share

The earnings and weighted average shares outstanding used in the computation of basic and diluted earnings per share are as follows:

	Years Ended December 31,
	2018		2017
Numerator:
Net earnings (loss)	$	20,709	$	(11,897	)
Less dividends declared:
Class A		522		522
Class B		2,796		2,757
Undistributed earnings (loss)	$	17,391	$	(15,176	)

Undistributed earnings (loss) allocation - basic and diluted:
Class A undistributed earnings (loss)	$	2,999	$	(2,635	)
Class B undistributed earnings (loss)		14,392		(12,541	)
Total undistributed earnings (loss)	$	17,391	$	(15,176	)

Net earnings (loss) allocation - basic and diluted:
Class A net earnings (loss)	$	3,521	$	(2,113	)
Class B net earnings (loss)		17,188		(9,784	)
Net earnings (loss)	$	20,709	$	(11,897	)

Denominator:
Weighted average shares outstanding:
Class A - basic and diluted		2,175		2,175
Class B - basic and diluted		9,939		9,857

Net earnings (loss) per share:
Class A - basic and diluted	$	1.62	$	(0.97	)
Class B - basic and diluted	$	1.73	$	(0.99	)

ACQUISITION (Tables)

12 Months Ended

Dec. 31, 2018

ACQUISITION [Abstract]

Fair Values of Consideration Transferred and Identifiable Net Assets Acquired

	As of
	October 1, 2018
	Acquisition Date
Identifiable assets acquired	$	2,986
Liabilities assumed		(1,688	)
Net identifiable assets acquired		1,298
Goodwill		1,290
Net assets acquired	$	2,588

Fair value of consideration transferred	$	2,588

REVENUE (Tables)

12 Months Ended

Dec. 31, 2018

REVENUE [Abstract]

Disaggregation of Revenue

The following table provides information about disaggregated revenue by product group and sales channel, and includes a reconciliation of the disaggregated revenue to our reportable segments:

	Year Ended December 31, 2018
	North
	America		Asia		Europe		Consolidated

By Product Group:
Connectivity solutions	$	135,454	$	17,140	$	34,130	$	186,724
Magnetic solutions		37,805		137,998		9,604		185,407
Power solutions and protection		98,432		32,065		45,556		176,053
	$	271,691	$	187,203	$	89,290	$	548,184

By Sales Channel:
Direct to customer	$	175,290	$	161,114	$	62,255	$	398,659
Through distribution		96,401		26,089		27,035		149,525
	$	271,691	$	187,203	$	89,290	$	548,184

Cumulative Effect of Changes Made to Consolidated Balance Sheet

The cumulative effect of the changes made to our consolidated January 1, 2018 balance sheet for the adoption of ASC 606 were as follows:

	Balance at			Adjustments				Balance at
	December 31,			Due to				January 1,
	2017			ASC 606				2018
Balance Sheet
Unbilled receivables		$	-		$	14,536			$	14,536
Inventory			107,719			(11,044	)			96,675
Other current liabilities			6,204			43				6,247
Retained earnings			147,807			3,449				151,256

Impact of Adoption of Balance Sheet and Consolidated Statement of Operations

	As of December 31, 2018
			Balances		Effect of
	As		Without Adoption		Change
	Reported		of ASC 606		Higher/(Lower)

Balance Sheet
Assets
Unbilled receivables	$	15,799	$	-	$	15,799
Inventories		120,068		131,885		(11,817	)

Liabilities
Other current liabilities		15,061		15,041		20

Equity
Retained earnings		168,695		164,734		3,961

	Year Ended December 31, 2018
			Balances		Effect of
	As		Without Adoption		Change
	Reported		of ASC 606		Higher/(Lower)

Statement of Operations
Net sales	$	548,184	$	546,922	$	1,262
Cost of sales		438,414		437,641		773
Operating income		29,611		29,122		489
Provision for income taxes		2,907		2,930		(23	)
Net earnings		20,709		20,197		512

Contract Assets and Contract Liabilities

The balances of the Company's contract assets and contract liabilities at December 31, 2018 and January 1, 2018 are as follows:

	December 31,		January 1,
	2018		2018

Contract assets - current (unbilled receivable)	$	15,799	$	14,536
Contract liabilities - current (deferred revenue)	$	1,036	$	855

Deferred Revenue

A tabular presentation of the activity within the deferred revenue account for the year ended December 31, 2018 is presented below:

	Year Ended
	December 31, 2018
Balance, January 1	$	855
New advance payments received		6,517
Recognized as revenue during period		(6,322	)
Currency translation		(14	)
Balance, December 31	$	1,036

GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)

12 Months Ended

Dec. 31, 2018

GOODWILL AND OTHER INTANGIBLE ASSETS [Abstract]

Changes in Carrying Value of Goodwill Classified by Segment Reporting Structure

The changes in the carrying value of goodwill classified by our segment reporting structure for the years ended December 31, 2018 and 2017 are as follows:

	Total			North America			Asia			Europe

Balance at January 1, 2017:
Goodwill, gross	$	146,542		S	63,364		$	54,508		$	28,670
Accumulated impairment charges		(128,591	)		(54,474	)		(54,508	)		(19,609	)
Goodwill, net		17,951			8,890			-			9,061

Foreign currency translation		2,226			-			-			2,226

Balance at December 31, 2017:
Goodwill, gross		148,768			63,364			54,508			30,896
Accumulated impairment charges		(128,591	)		(54,474	)		(54,508	)		(19,609	)
Goodwill, net		20,177			8,890			-			11,287

Goodwill allocation related to acquisition		1,290			-			-			1,290
Foreign currency translation		(1,650	)		-			-			(1,650	)

Balance at December 31, 2018:
Goodwill, gross		148,408			63,364			54,508			30,536
Accumulated impairment charges		(128,591	)		(54,474	)		(54,508	)		(19,609	)
Goodwill, net	$	19,817		$	8,890		$	-		$	10,927

Excess of Estimated Fair Values over Carrying Value Including Goodwill

The excess of estimated fair values over carrying value, including goodwill for each of our reporting units that had goodwill as of the 2018 annual impairment test were as follows:

Reporting Unit	% by Which Estimated Fair Value Exceeds Carrying Value
North America		20.3	%
Europe		23.8	%

Components of Definite and Indefinite-Lived Intangible Assets

The components of definite and indefinite-lived intangible assets are as follows:

	December 31, 2018						December 31, 2017
	Gross Carrying		Accumulated		Net Carrying		Gross Carrying		Accumulated		Net Carrying
	Amount		Amortization		Amount		Amount		Amortization		Amount

Patents, licenses and technology	$	38,845	$	18,281	$	20,564	$	39,218	$	14,926	$	24,292
Customer relationships		44,588		14,193		30,395		44,704		11,478		33,226
Non-compete agreements		2,683		2,683		-		2,711		2,711		-
Trademarks		11,770		40		11,730		11,888		40		11,848

	$	97,886	$	35,197	$	62,689	$	98,521	$	29,155	$	69,366

Estimated Amortization Expense for Intangible Assets

Estimated amortization expense for intangible assets for the next five years is as follows:

December 31,	Amortization Expense

2019	$	6,289
2020		6,263
2021		6,248
2022		4,877
2023		3,621

INVENTORIES (Tables)

12 Months Ended

Dec. 31, 2018

INVENTORIES [Abstract]

Components of Inventories

The components of inventories are as follows:

	December 31,
	2018		2017
Raw materials	$	63,348	$	46,712
Work in progress		21,441		17,688
Finished goods		35,279		43,319
Inventories	$	120,068	$	107,719

PROPERTY, PLANT AND EQUIPMENT, NET (Tables)

12 Months Ended

Dec. 31, 2018

PROPERTY, PLANT AND EQUIPMENT, NET [Abstract]

Property, Plant and Equipment

Property, plant and equipment, net consist of the following:

	December 31,
	2018			2017
Land	$	2,251		$	2,259
Buildings and improvements		30,119			30,761
Machinery and equipment		126,747			122,773
Construction in progress		4,687			1,511
		163,804			157,304
Accumulated depreciation		(119,872	)		(113,809	)
Property, plant and equipment, net	$	43,932		$	43,495

INCOME TAXES (Tables)

12 Months Ended

Dec. 31, 2018

INCOME TAXES [Abstract]

Reconciliation of Beginning and Ending Amount of Liability for Uncertain Tax Positions

A reconciliation of the beginning and ending amount of the liability for uncertain tax positions, including the portion included in income taxes payable, is as follows:

	Year Ended December 31,
	2018			2017
Liability for uncertain tax positions - January 1	$	30,430		$	27,828
Additions based on tax positions
related to the current year		1,703			2,168
Additions relating to acquisitions		-			-
Translation adjustment		(657	)		804
Settlement/expiration of statutes of limitations		(2,525	)		(370	)
Liability for uncertain tax positions - December 31	$	28,951		$	30,430

Provision (Benefit) for Income Taxes

The provision (benefit) for income taxes consists of the following:

	Years Ended December 31,
	2018			2017
Current:
Federal	$	(3,517	)	$	16,055
State		152			115
Foreign		3,782			5,685
		417			21,855
Deferred:
Federal		2,895			(1,312	)
State		196			(329	)
Foreign		(601	)		1,326
		2,490			(315	)

	$	2,907		$	21,540

Reconciliation of Taxes on Income Computed at Federal Statutory Rate

A reconciliation of taxes on income computed at the U.S. federal statutory rate to amounts provided is as follows:

	Years Ended December 31,
	2018					2017
	$			%		$			%
Tax provision computed at the
federal statutory rate	$	4,959		21	%	$	3,375		35	%
Increase (decrease) in taxes resulting from:
Different tax rates applicable to foreign operations		1,231		5	%		(2,531	)	(26	%)

(Reversal of) increase in liability for uncertain
tax positions - net		(822	)	(3	%)		1,082		11	%

Impact of U.S. Tax Reform		(2,628	)	(11	%)		19,171		199	%

Utilization of research and experimentation, solar and foreign
tax credits		(300	)	(1	%)		(272	)	(3	%)

State taxes, net of federal benefit		322		1	%		(261	)	(3	%)

Foreign tax on gain, net of federal benefit		-		0	%		1,223		13	%

Other, including qualified production activity credits, SERP/COLI
income, under/(over) accruals, unrealized foreign exchange gains
and amortization of purchase accounting intangibles		145		1	%		(247	)	(3	%)
Tax provision computed at the Company's
effective tax rate	$	2,907		12	%	$	21,540		223	%

Deferred Income Tax Assets

Components of deferred income tax assets are as follows:

	December 31,
	2018			2017
	Tax Effect			Tax Effect

Deferred tax assets:
State tax credits	$	1,000		$	1,033
Unfunded pension liability		605			1,139
Reserves and accruals		2,483			2,828
Federal, state and foreign net operating loss
and credit carryforwards		8,370			10,524
Depreciation		850			917
Other accruals		5,641			4,915
Total deferred tax assets		18,949			21,356
Deferred tax liabilities:
Depreciation		1,666			989
Amortization		7,930			8,490
Other accruals		893			946
Total deferred tax liabilities		10,489			10,425
Valuation allowance		9,200			8,343
Net deferred tax (liabilities)/assets	$	(740	)	$	2,588

DEBT (Tables)

12 Months Ended

Dec. 31, 2018

DEBT [Abstract]

Principal Payments of Total Debt Outstanding

Scheduled principal payments of the total debt outstanding at December 31, 2018 are as follows (in thousands):

2019	$	2,974
2020		5,948
2021		5,948
2022		101,118
Total long-term debt		115,988
Less: Current maturities of long-term debt		(2,974	)
Noncurrent portion of long-term debt	$	113,014

ACCRUED EXPENSES (Tables)

12 Months Ended

Dec. 31, 2018

ACCRUED EXPENSES [Abstract]

Accrued Expenses

Accrued expenses consist of the following:

	December 31,
	2018		2017
Sales commissions	$	2,609	$	2,461
Subcontracting labor		1,550		1,408
Salaries, bonuses and related benefits		18,275		16,531
Warranty accrual		1,078		1,769
Other		8,778		8,339
	$	32,290	$	30,508

SEGMENTS (Tables)

12 Months Ended

Dec. 31, 2018

SEGMENTS [Abstract]

Key Financial Data

The following is a summary of key financial data:

	Years Ended December 31,
	2018			2017
Net Sales to External Customers:
North America	$	271,691		$	245,834
Asia		187,203			167,680
Europe		89,290			78,097
	$	548,184		$	491,611

Net Sales:
North America	$	284,245		$	257,541
Asia		279,965			249,506
Europe		103,853			89,765
Less intercompany
net sales		(119,879	)		(105,201	)
	$	548,184		$	491,611

Income from Operations:
North America	$	6,769		$	6,195
Asia		16,621			8,964
Europe		6,221			2,227
	$	29,611		$	17,386

Total Assets:
North America	$	177,902		$	172,674
Asia		175,713			152,447
Europe		89,909			106,144
	$	443,524		$	431,265

Capital Expenditures:
North America	$	4,836		$	1,734
Asia		5,661			2,617
Europe		1,097			2,074
	$	11,594		$	6,425

Depreciation and Amortization Expense:
North America	$	8,906		$	10,641
Asia		5,842			6,728
Europe		3,459			3,349
	$	18,207		$	20,718

Entity-Wide Information Net Sales to External Customers by Geographic Area and by Major Product Line

The following is a summary of entity-wide information related to the Company's net sales to external customers by geographic area and by major product line.

	Years Ended December 31,
		2018		2017
Net Sales by Geographic Location:

United States		$	271,691	$	245,834
Macao			187,204		167,681
United Kingdom			26,340		24,110
Slovakia			24,123		14,194
Germany			15,298		13,857
Switzerland			13,279		15,366
All other foreign countries			10,249		10,569
Consolidated net sales		$	548,184	$	491,611

Net Sales by Major Product Line:

Connectivity solutions		$	186,724	$	170,337
Magnetic solutions			185,407		161,011
Power solutions and protection			176,053		160,263
Consolidated net sales		$	548,184	$	491,611

Long-Lived Assets by Geographic Area

The following is a summary of long-lived assets by geographic area as of December 31, 2018 and 2017:

	December 31,
		2018		2017
Long-lived Assets by Geographic Location:

United States		$	27,505	$	27,594
People's Republic of China (PRC)			29,563		30,151
Slovakia			6,475		7,625
Switzerland			3,023		3,632
United Kingdom			2,330		1,345
All other foreign countries			1,117		1,121
Consolidated long-lived assets		$	70,013	$	71,468

RETIREMENT FUND AND PROFIT SHARING PLAN (Tables)

12 Months Ended

Dec. 31, 2018

RETIREMENT FUND AND PROFIT SHARING PLAN [Abstract]

SERP Expense

The net periodic benefit cost related to the SERP consisted of the following components during the years ended December 31, 2018 and 2017:

	Years Ended December 31,
	2018		2017

Service Cost	$	732	$	700
Interest Cost		664		673
Net amortization		443		375
Net periodic benefit cost	$	1,839	$	1,748

Changes in Plan Assets and Benefit Obligation, Funded Status

Summarized information about the changes in plan assets and benefit obligation, the funded status and the amounts recorded at December 31, 2018 and 2017 are as follows:

	Years Ended December 31,
	2018			2017
Fair value of plan assets, January 1	$	-		$	-
Company contributions		325			240
Benefits paid		(325	)		(240	)
Fair value of plan assets, December 31	$	-		$	-
Benefit obligation, January 1	$	19,134		$	16,900
Service cost		732			700
Interest cost		664			673
Benefits paid		(325	)		(240	)
Plan amendments		39			198
Actuarial (gains) losses		(1,568	)		903
Benefit obligation, December 31		18,676			19,134
Underfunded status, December 31	$	(18,676	)	$	(19,134	)

Expected Benefit Payments

The following benefit payments, which reflect expected future service, are expected to be paid:

Years Ending
December 31,

2019	$	379
2020		659
2021		679
2022		902
2023		941
2024 - 2028		5,409

Gross Amounts Recognized in Accumulated Other Comprehensive Loss, Net of Tax

The following gross amounts are recognized net of tax in accumulated other comprehensive loss:

	December 31,
	2018		2017
Prior service cost	$	918	$	1,135
Net loss		1,977		3,732
	$	2,895	$	4,867

Weighted Average Assumptions Used in Determining Periodic Net Cost and Benefit Obligation Related to SERP

The weighted average assumptions used in determining the periodic net cost and benefit obligation information related to the SERP are as follows:

	Years Ended December 31,
	2018			2017
Net periodic benefit cost:
Discount rate		3.50	%		4.00	%
Rate of compensation increase		3.00	%		3.00	%
Benefit obligation:
Discount rate		4.00	%		3.50	%
Rate of compensation increase		2.50	%		3.00	%

SHARE-BASED COMPENSATION (Tables)

12 Months Ended

Dec. 31, 2018

SHARE-BASED COMPENSATION [Abstract]

Restricted Stock Activity

A summary of the restricted stock activity under the Program for the year ended December 31, 2018 is presented below:

						Weighted Average
Restricted Stock				Weighted Average		Remaining
Awards	Shares			Award Price		Contractual Term

Outstanding at January 1, 2018		424,500		$	23.23	3.0 years
Granted		262,000			24.68
Vested		(129,600	)		21.88
Forfeited		(29,000	)		21.69
Outstanding at December 31, 2018		527,900		$	24.37	3.5 years

COMMITMENTS AND CONTINGENCIES (Tables)

12 Months Ended

Dec. 31, 2018

COMMITMENTS AND CONTINGENCIES [Abstract]

Future Minimum Lease Payments for Operating Leases

Future minimum lease payments for operating leases are approximately as follows:

Year Ending
December 31,

2019	$	7,363
2020		6,017
2021		4,967
2022		3,338
2023		1,194
Thereafter		442
	$	23,321

ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)

12 Months Ended

Dec. 31, 2018

ACCUMULATED OTHER COMPREHENSIVE LOSS [Abstract]

Accumulated Other Comprehensive Loss

The components of accumulated other comprehensive loss as of December 31, 2018 and 2017 are summarized below:

	December 31,
	2018			2017

Foreign currency translation adjustment	$	(22,635	)	$	(16,537	)
Unrealized holding gain on available-for-sale
securities, net of taxes of $0 and $85 as of
December 31, 2018 and 2017		12			145
Unfunded SERP liability, net of taxes of ($680) and ($1,635)
as of December 31, 2018 and 2017		(2,215	)		(3,233	)

Accumulated other comprehensive loss	$	(24,838	)	$	(19,625	)

Changes in Accumulated Other Comprehensive Loss by Component

Changes in accumulated other comprehensive (loss) income by component during the years ended December 31, 2018 and 2017 are as follows. All amounts are net of tax.

				Unrealized Holding
	Foreign Currency			Gains on
	Translation			Available-for-			Unfunded
	Adjustment			Sale Securities			SERP Liability				Total

Balance at January 1, 2017	$	(28,976	)	$	424		$	(2,745	)		$	(31,297	)
Other comprehensive income (loss) before reclassifications		12,439			(279	)		(733	)			11,427
Amounts reclassified from accumulated other
comprehensive income (loss)		-			-			245		(a)		245
Net current period other comprehensive income (loss)		12,439			(279	)		(488	)			11,672

Balance at December 31, 2017		(16,537	)		145			(3,233	)			(19,625	)

Other comprehensive income (loss) before reclassifications		(6,098	)		37			679				(5,382	)
Amounts reclassified from accumulated other
comprehensive income (loss)		-			(170	)		339		(a)		169
Net current period other comprehensive income (loss)		(6,098	)		(133	)		1,018				(5,213	)

Balance at December 31, 2018	$	(22,635	)	$	12		$	(2,215	)		$	(24,838	)

(a)	This reclassification relates to the amortization of prior service costs and gains/losses associated with the Company's SERP plan. This expense is allocated between cost of sales and selling, general and administrative expense based upon the employment classification of the plan participants.

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)	12 Months Ended
	Dec. 31, 2018 Segment
DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]
Number of reportable segments	3

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Cash Equivalents, Effects of Foreign Currency, Product Warranties, Depreciation and Goodwill and Identifiable Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]
Net realized and unrealized currency exchange (losses) gains	$ 2,663	$ (2,770)
Goodwill and Identifiable Intangible Assets [Abstract]
Percentage of identifiable intangible assets	14.10%	16.10%
Maximum [Member]
Cash Equivalents [Abstract]
Amount insured by FDIC in each institutions	$ 250
Product Warranty Liability [Line Items]
Standard warranty period of product	3 years
Goodwill and Identifiable Intangible Assets [Abstract]
Other intangible assets amortization period	16 years
Minimum [Member]
Product Warranty Liability [Line Items]
Standard warranty period of product	1 year
Goodwill and Identifiable Intangible Assets [Abstract]
Other intangible assets amortization period	1 year
Buildings and Leasehold Improvements [Member] \| Maximum [Member]
Depreciation [Abstract]
Property, plant and equipment, useful life	33 years
Buildings and Leasehold Improvements [Member] \| Minimum [Member]
Depreciation [Abstract]
Property, plant and equipment, useful life	2 years
Machinery and Equipment [Member] \| Maximum [Member]
Depreciation [Abstract]
Property, plant and equipment, useful life	15 years
Machinery and Equipment [Member] \| Minimum [Member]
Depreciation [Abstract]
Property, plant and equipment, useful life	3 years

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
EARNINGS PER SHARE [Abstract]
Anti-dilutive securities excluded from earnings per share calculation (in shares)	0	0
Numerator [Abstract]
Net earnings (loss)	$ 20,709	$ (11,897)
Undistributed earnings (loss)	17,391	(15,176)
Class A [Member]
Numerator [Abstract]
Net earnings (loss)	3,521	(2,113)
Less dividends declared	522	522
Undistributed earnings (loss)	$ 2,999	$ (2,635)
Weighted average shares outstanding [Abstract]
Weighted average shares outstanding (in shares)	2,175	2,175
Net earnings (loss) per share [Abstract]
Basic and diluted (in dollars per share)	$ 1.62	$ (0.97)
Class B [Member]
EARNINGS PER SHARE [Abstract]
Dividend rate Class B common stock in excess of dividend rate of Class A common stock	5.00%	5.00%
Undistributed earning allocation rate of Class B common stock in excess of Class A common stock, percentage	5.00%	5.00%
Numerator [Abstract]
Net earnings (loss)	$ 17,188	$ (9,784)
Less dividends declared	2,796	2,757
Undistributed earnings (loss)	$ 14,392	$ (12,541)
Weighted average shares outstanding [Abstract]
Weighted average shares outstanding (in shares)	9,939	9,857
Net earnings (loss) per share [Abstract]
Basic and diluted (in dollars per share)	$ 1.73	$ (0.99)

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Research and Development (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Research and Development ("R&D") [Abstract]
Research and development costs	$ 29,400	$ 28,800	$ 26,700

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Recently Adopted Accounting Standards (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2018
Summary of Adjustments to Conform to New Guidance [Abstract]
Retained earnings	$ 147,807	$ 168,695
ASU 2016-09 [Member]
Summary of Adjustments to Conform to New Guidance [Abstract]
Cumulative effect adjustment	0
ASU 2016-09 [Member] \| Retained Earnings [Member]
Summary of Adjustments to Conform to New Guidance [Abstract]
Cumulative effect adjustment	1,696
ASU 2016-09 [Member] \| Additional Paid-in Capital [Member]
Summary of Adjustments to Conform to New Guidance [Abstract]
Cumulative effect adjustment	(1,696)
ASU 2016-09 [Member] \| Adjustments Due to ASC 606 [Member]
Summary of Adjustments to Conform to New Guidance [Abstract]
Retained earnings	$ 3,400
ASU 2016-02 [Member] \| Plan [Member] \| Minimum [Member]
Summary of Adjustments to Conform to New Guidance [Abstract]
Right-of-use assets		18,000
Lease liabilities		18,000
ASU 2016-02 [Member] \| Plan [Member] \| Maximum [Member]
Summary of Adjustments to Conform to New Guidance [Abstract]
Right-of-use assets		22,000
Lease liabilities		$ 22,000

ACQUISITION (Details) - USD ($) $ in Thousands		12 Months Ended
ACQUISITION (Details) - USD ($) $ in Thousands	Oct. 01, 2018	Dec. 31, 2018	Dec. 31, 2017
Details of Acquisition [Abstract]
Net sales		$ 548,184	$ 491,611
BCMZ [Member]
Details of Acquisition [Abstract]
Purchase price in cash	$ 2,600
Net sales		500
Identifiable assets acquired	2,986
BCMZ [Member] \| Maximum [Member]
Details of Acquisition [Abstract]
Acquisition-related costs		$ 100
BCMZ [Member] \| Customer Relationships [Member]
Details of Acquisition [Abstract]
Identifiable assets acquired	$ 400
Estimated future life		10 years

ACQUISITION, Fair Values of Consideration Transferred and Identifiable Net assets Acquired (Details) - USD ($) $ in Thousands		12 Months Ended
	Oct. 01, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Fair Values of Consideration Transferred and Identifiable Net assets Acquired [Abstract]
Goodwill		$ 19,817	$ 20,177	$ 17,951
BCMZ [Member]
Fair Values of Consideration Transferred and Identifiable Net assets Acquired [Abstract]
Identifiable assets acquired	$ 2,986
Liabilities assumed	(1,688)
Net identifiable assets acquired	1,298	1,298	0
Goodwill	1,290	1,290	0
Net assets acquired	2,588	2,588	0
Fair value of consideration transferred	$ 2,588	$ 2,588	$ 0

REVENUE, Significant Payment Terms (Details)	12 Months Ended
REVENUE, Significant Payment Terms (Details)	Dec. 31, 2018
Significant Payment Terms [Abstract]
Period of payment for products sold under consignment contracts due from customer pulling the product from the hub	60 days
Minimum [Member]
Warranties [Abstract]
Standard warranty period of product	1 year
Maximum [Member]
Warranties [Abstract]
Standard warranty period of product	3 years
Direct to Customer [Member] \| Minimum [Member]
Significant Payment Terms [Abstract]
Period of payment for products sold due	30 days
Direct to Customer [Member] \| Maximum [Member]
Significant Payment Terms [Abstract]
Period of payment for products sold due	90 days
Through Distribution [Member] \| Minimum [Member]
Significant Payment Terms [Abstract]
Period of payment for products sold due	30 days
Through Distribution [Member] \| Maximum [Member]
Significant Payment Terms [Abstract]
Period of payment for products sold due	90 days
Power Solutions and Protection [Member] \| Maximum [Member]
Licensing Agreements [Abstract]
Payment received on reporting date, quarterly or annual	30 days

REVENUE, Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Disaggregation of Revenue [Abstract]
Net sales	$ 548,184	$ 491,611
Direct to Customer [Member]
Disaggregation of Revenue [Abstract]
Net sales	398,659
Through Distribution [Member]
Disaggregation of Revenue [Abstract]
Net sales	149,525
Connectivity Solutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	186,724	170,337
Magnetic Solutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	185,407	161,011
Power Solutions and Protection [Member]
Disaggregation of Revenue [Abstract]
Net sales	176,053	160,263
North America [Member]
Disaggregation of Revenue [Abstract]
Net sales	271,691	245,834
North America [Member] \| Direct to Customer [Member]
Disaggregation of Revenue [Abstract]
Net sales	175,290
North America [Member] \| Through Distribution [Member]
Disaggregation of Revenue [Abstract]
Net sales	96,401
North America [Member] \| Connectivity Solutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	135,454
North America [Member] \| Magnetic Solutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	37,805
North America [Member] \| Power Solutions and Protection [Member]
Disaggregation of Revenue [Abstract]
Net sales	98,432
Asia [Member]
Disaggregation of Revenue [Abstract]
Net sales	187,203	167,680
Asia [Member] \| Direct to Customer [Member]
Disaggregation of Revenue [Abstract]
Net sales	161,114
Asia [Member] \| Through Distribution [Member]
Disaggregation of Revenue [Abstract]
Net sales	26,089
Asia [Member] \| Connectivity Solutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	17,140
Asia [Member] \| Magnetic Solutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	137,998
Asia [Member] \| Power Solutions and Protection [Member]
Disaggregation of Revenue [Abstract]
Net sales	32,065
Europe [Member]
Disaggregation of Revenue [Abstract]
Net sales	89,290	$ 78,097
Europe [Member] \| Direct to Customer [Member]
Disaggregation of Revenue [Abstract]
Net sales	62,255
Europe [Member] \| Through Distribution [Member]
Disaggregation of Revenue [Abstract]
Net sales	27,035
Europe [Member] \| Connectivity Solutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	34,130
Europe [Member] \| Magnetic Solutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	9,604
Europe [Member] \| Power Solutions and Protection [Member]
Disaggregation of Revenue [Abstract]
Net sales	$ 45,556

REVENUE, Cumulative Effect of Changes made to Consolidated Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Balance Sheet [Abstract]
Unbilled receivables	$ 15,799	$ 0
Inventory	120,068	107,719
Other current liabilities	15,061	6,204
Retained earnings	168,695	147,807
ASU 2014-09 [Member]
Balance Sheet [Abstract]
Unbilled receivables		14,536
Inventory		96,675
Other current liabilities		6,247
Retained earnings		151,256
Adjustments Due to ASC 606 [Member] \| ASU 2014-09 [Member]
Balance Sheet [Abstract]
Unbilled receivables	15,799	14,536
Inventory	(11,817)	(11,044)
Other current liabilities	20	43
Retained earnings	3,961	$ 3,449
Balances Without Adoption of ASC 606 [Member] \| ASU 2014-09 [Member]
Balance Sheet [Abstract]
Unbilled receivables	0
Inventory	131,885
Other current liabilities	15,041
Retained earnings	$ 164,734

REVENUE, Impact of Adoption on Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Assets [Abstract]
Unbilled receivables	$ 15,799	$ 0
Inventories	120,068	107,719
Liabilities [Abstract]
Other current liabilities	15,061	6,204
Equity [Abstract]
Retained earnings	168,695	147,807
ASU 2014-09 [Member]
Assets [Abstract]
Unbilled receivables		14,536
Inventories		96,675
Liabilities [Abstract]
Other current liabilities		6,247
Equity [Abstract]
Retained earnings		151,256
Balances Without Adoption of ASC 606 [Member] \| ASU 2014-09 [Member]
Assets [Abstract]
Unbilled receivables	0
Inventories	131,885
Liabilities [Abstract]
Other current liabilities	15,041
Equity [Abstract]
Retained earnings	164,734
Effect of Change Higher/(Lower) [Member] \| ASU 2014-09 [Member]
Assets [Abstract]
Unbilled receivables	15,799	14,536
Inventories	(11,817)	(11,044)
Liabilities [Abstract]
Other current liabilities	20	43
Equity [Abstract]
Retained earnings	$ 3,961	$ 3,449

REVENUE, Impact of Adoption on Consolidated Statement of Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Statement of Operations [Abstract]
Net sales	$ 548,184	$ 491,611
Cost of sales	438,414	389,262
Operating income	29,611	17,386
Provision for income taxes	2,907	21,540
Net earnings	20,709	$ (11,897)
Balances Without Adoption of ASC 606 [Member] \| ASU 2014-09 [Member]
Statement of Operations [Abstract]
Net sales	546,922
Cost of sales	437,641
Operating income	29,122
Provision for income taxes	2,930
Net earnings	20,197
Effect of Change Higher/(Lower) [Member] \| ASU 2014-09 [Member]
Statement of Operations [Abstract]
Net sales	1,262
Cost of sales	773
Operating income	489
Provision for income taxes	(23)
Net earnings	$ 512

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

REVENUE, Contract Assets and Contract Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Contract with Customer, Asset and Liability [Abstract]
Contract assets - current (unbilled receivable)	$ 15,799	$ 0
Contract liabilities - current (deferred revenue)	1,036
Deferred Revenue [Roll Forward]
Balance, beginning of period	855
New advance payments received	6,517
Recognized as revenue during period	(6,322)
Currency translation	(14)
Balance, end of period	$ 1,036
ASU 2014-09 [Member]
Contract with Customer, Asset and Liability [Abstract]
Contract assets - current (unbilled receivable)		14,536
Contract liabilities - current (deferred revenue)		$ 855

REVENUE, Transaction Price Allocated to Future Obligations (Details) $ in Millions	Dec. 31, 2018 USD ($)
REVENUE [Abstract]
Revenue, remaining performance obligation	$ 18.2
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01
Transaction Price Allocated to Future Obligations [Abstract]
Remaining performance obligation percentage	78.00%
Remaining performance satisfaction period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Transaction Price Allocated to Future Obligations [Abstract]
Remaining performance obligation percentage	20.00%
Remaining performance satisfaction period

GOODWILL AND OTHER INTANGIBLE ASSETS, Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Goodwill [Roll Forward]
Goodwill, gross beginning of period	$ 148,768	$ 146,542
Accumulated impairment charges, beginning of period	(128,591)	(128,591)
Goodwill, net beginning of period	20,177	17,951
Goodwill allocation related to acquisition	1,290
Foreign currency translation	(1,650)	2,226
Goodwill, gross end of period	148,408	148,768
Accumulated impairment charges, end of period	(128,591)	(128,591)
Goodwill, net end of period	19,817	20,177
North America [Member]
Goodwill [Roll Forward]
Goodwill, gross beginning of period	63,364	63,364
Accumulated impairment charges, beginning of period	(54,474)	(54,474)
Goodwill, net beginning of period	8,890	8,890
Goodwill allocation related to acquisition	0
Foreign currency translation	0	0
Goodwill, gross end of period	63,364	63,364
Accumulated impairment charges, end of period	(54,474)	(54,474)
Goodwill, net end of period	$ 8,890	8,890
Reporting unit, percentage of fair value in excess of carrying amount	20.30%
Asia [Member]
Goodwill [Roll Forward]
Goodwill, gross beginning of period	$ 54,508	54,508
Accumulated impairment charges, beginning of period	(54,508)	(54,508)
Goodwill, net beginning of period	0	0
Goodwill allocation related to acquisition	0
Foreign currency translation	0	0
Goodwill, gross end of period	54,508	54,508
Accumulated impairment charges, end of period	(54,508)	(54,508)
Goodwill, net end of period	0	0
Europe [Member]
Goodwill [Roll Forward]
Goodwill, gross beginning of period	30,896	28,670
Accumulated impairment charges, beginning of period	(19,609)	(19,609)
Goodwill, net beginning of period	11,287	9,061
Goodwill allocation related to acquisition	1,290
Foreign currency translation	(1,650)	2,226
Goodwill, gross end of period	30,536	30,896
Accumulated impairment charges, end of period	(19,609)	(19,609)
Goodwill, net end of period	$ 10,927	$ 11,287
Reporting unit, percentage of fair value in excess of carrying amount	23.80%

GOODWILL AND OTHER INTANGIBLE ASSETS, Other Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Components of definite and indefinite-lived intangible assets [Abstract]
Gross Carrying Amount	$ 97,886	$ 98,521
Accumulated Amortization	35,197	29,155
Net Carrying Amount	62,689	69,366
Amortization expense	6,400	6,700
Estimated amortization expense for intangible assets [Abstract]
2019	6,289
2020	6,263
2021	6,248
2022	4,877
2023	$ 3,621
Minimum [Member]
Other intangible assets [Abstract]
Other intangible assets amortization period	1 year
Maximum [Member]
Other intangible assets [Abstract]
Other intangible assets amortization period	16 years
Patents, Licenses and Technology [Member]
Components of definite and indefinite-lived intangible assets [Abstract]
Gross Carrying Amount	$ 38,845	39,218
Accumulated Amortization	18,281	14,926
Net Carrying Amount	20,564	24,292
Customer Relationships [Member]
Components of definite and indefinite-lived intangible assets [Abstract]
Gross Carrying Amount	44,588	44,704
Accumulated Amortization	14,193	11,478
Net Carrying Amount	30,395	33,226
Non-compete Agreements [Member]
Components of definite and indefinite-lived intangible assets [Abstract]
Gross Carrying Amount	2,683	2,711
Accumulated Amortization	2,683	2,711
Net Carrying Amount	0	0
Trademarks [Member]
Components of definite and indefinite-lived intangible assets [Abstract]
Gross Carrying Amount	11,770	11,888
Accumulated Amortization	40	40
Net Carrying Amount	$ 11,730	$ 11,848
Other Intangible Assets Excluding Trademarks [Member] \| Minimum [Member]
Other intangible assets [Abstract]
Other intangible assets amortization period	1 year
Other Intangible Assets Excluding Trademarks [Member] \| Maximum [Member]
Other intangible assets [Abstract]
Other intangible assets amortization period	16 years

FAIR VALUE MEASUREMENTS (Details) - USD ($) $ in Thousands	12 Months Ended
FAIR VALUE MEASUREMENTS (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Fair Value Measurement [Abstract]
Proceeds from sale of marketable securities within rabbi trust	$ 1,348	$ 0
Transfers in out between levels	0	0
Fair value of total debt	117,900	124,800
Carrying amount of long-term debt	114,200	122,700
Investments held in Rabbi Trust [Member]
Fair Value Measurement [Abstract]
Available-for-sale securities measured at fair value	1,400	1,500
Investments held in Rabbi Trust [Member] \| SERP [Member]
Fair Value Measurement [Abstract]
Gross unrealized gains associated with the investment held in the rabbi trust		200
Realized gains on sale of securities	200
Proceeds from sale of marketable securities within rabbi trust	1,300
Nonrecurring [Member]
Fair Value Measurement [Abstract]
Financial assets accounted at fair value	$ 0	$ 0

OTHER ASSETS (Details) - USD ($) $ in Thousands	12 Months Ended
OTHER ASSETS (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other assets [Abstract]
Cash surrender value of the COLI	$ 11,600	$ 12,300
Increase (decrease) in cash surrender value	(400)	1,300
Investments held in Rabbi Trust [Member]
Other assets [Abstract]
Cost of investments	1,400	1,300
Securities measured at fair value	1,400	1,500
Unrealized gain on investments	0	200
Supplemental Employee Retirement Plans [Member]
Other assets [Abstract]
Benefit obligation	18,676	19,134	$ 16,900
Value of assets earmarked for SERP use but not restricted to that use	$ 13,000	$ 14,000

INVENTORIES (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Components of inventories [Abstract]
Raw materials	$ 63,348	$ 46,712
Work in progress	21,441	17,688
Finished goods	35,279	43,319
Inventories	$ 120,068	$ 107,719

PROPERTY, PLANT AND EQUIPMENT, NET (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Property, plant and equipment [Abstract]
Property, plant and equipment, gross	$ 163,804	$ 157,304
Accumulated depreciation	(119,872)	(113,809)
Property, plant and equipment, net	43,932	43,495
Depreciation expense	11,800	14,000
Land [Member]
Property, plant and equipment [Abstract]
Property, plant and equipment, gross	2,251	2,259
Buildings and Improvements [Member]
Property, plant and equipment [Abstract]
Property, plant and equipment, gross	30,119	30,761
Machinery and Equipment [Member]
Property, plant and equipment [Abstract]
Property, plant and equipment, gross	126,747	122,773
Construction in Progress [Member]
Property, plant and equipment [Abstract]
Property, plant and equipment, gross	$ 4,687	$ 1,511

INCOME TAXES, Uncertain Tax Positions and Interest and Penalties (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Income Taxes Uncertain Tax Positions and Tax Reform [Abstract]
Liabilities for uncertain tax positions - current	$ 1,400	$ 2,500
Liability for uncertain tax positions - noncurrent	27,553	27,948
Liability for uncertain positions expected to be resolved in next fiscal year	1,100
Interest and penalties uncertain tax positions recognized	1,300	900
Reconciliation of beginning and ending amount of liability for uncertain tax positions [Roll Forward]
Liability for uncertain tax positions - beginning of period	30,430	27,828
Additions based on tax positions related to the current year	1,703	2,168
Additions relating to acquisitions	0	0
Translation adjustment - increase		804
Translation adjustment - decrease	(657)
Settlement/expiration of statutes of limitations	(2,525)	(370)
Liability for uncertain tax positions - end of period	28,951	30,430
Interest and Penalties [Abstract]
(Benefit) on reversal of interest and penalties	(300)	0
Accrued interest and penalties uncertain tax positions	3,800	3,200
Tax Year 2008 [Member]
Income Taxes Uncertain Tax Positions and Tax Reform [Abstract]
Liabilities for uncertain tax positions - current	1,000
Tax Year 2006 [Member]
Income Taxes Uncertain Tax Positions and Tax Reform [Abstract]
Liabilities for uncertain tax positions - current		1,100
Tax Year 2014 [Member]
Income Taxes Uncertain Tax Positions and Tax Reform [Abstract]
Liabilities for uncertain tax positions - current		$ 1,400
Tax Year 2015 [Member]
Income Taxes Uncertain Tax Positions and Tax Reform [Abstract]
Liabilities for uncertain tax positions - current	$ 100

INCOME TAXES, Provision (Benefit) for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Income (Loss) Before income Taxes [Abstract]
(Loss) earnings before (benefit) provision for income taxes included (loss) earnings from domestic operations	$ 300	$ (2,000)
(Loss) earnings before (benefit) provision for income taxes from foreign operations	23,300	11,700
Current [Abstract]
Federal	(3,517)	16,055
State	152	115
Foreign	3,782	5,685
Total	417	21,855
Deferred [Abstract]
Federal	2,895	(1,312)
State	196	(329)
Foreign	(601)	1,326
Total	2,490	(315)
Tax provision computed at the Company's effective tax rate	2,907	21,540
Reconciliation of taxes on income computed at the federal statutory rate [Abstract]
Tax provision computed at the federal statutory rate	4,959	3,375
Increase (decrease) in taxes resulting from [Abstract]
Different tax rates applicable to foreign operations	1,231	(2,531)
(Reversal of) increase in liability for uncertain tax positions - net	(822)	1,082
Impact of U.S. Tax Reform	(2,628)	19,171
Utilization of research and experimentation, solar and foreign tax credits	(300)	(272)
State taxes, net of federal benefit	322	(261)
Foreign tax on gain, net of federal benefit	0	1,223
Other, including qualified production activity credits, SERP/COLI income, under/(over) accruals, unrealized foreign exchange gains and amortization of purchase accounting intangibles	145	(247)
Tax provision computed at the Company's effective tax rate	$ 2,907	$ 21,540
Increase (decrease) in effective tax rate resulting from [Abstract]
Federal statutory income tax rate	21.00%	35.00%
Different tax rates applicable to foreign operations, percentage	5.00%	(26.00%)
(Reversal of) increase in liability for uncertain tax positions - net, percentage	(3.00%)	11.00%
Impact of U.S. Tax Reform, percentage	(11.00%)	199.00%
Utilization of research and development, solar and foreign tax credits, percentage	(1.00%)	(3.00%)
State taxes, net of federal benefit, percentage	1.00%	(3.00%)
Foreign tax on gain, net of federal benefit, percentage	0.00%	13.00%
Other, including qualified production activity credits, SERP/COLI income, under/(over) accruals, unrealized foreign exchange gains and amortization of purchase accounting intangibles, percentage	1.00%	(3.00%)
Tax provision computed at the Company's effective tax rate, percentage	12.00%	223.00%

INCOME TAXES, Tax Credits and Net Operating Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Additional Income Tax Information [Abstract]
Federal statutory income tax rate	21.00%	35.00%
Deferred tax assets, net operating loss carryforwards	$ 8,370	$ 10,524
Income and dividend withholding taxes	400
One-time provisional transition tax expense		$ 18,100
Transitional tax expense	15,500
Deemed repatriation tax	(2,600)
Other Current Liabilities [Member]
Additional Income Tax Information [Abstract]
Tax Cuts And Jobs Act Of2017 Transition Tax For Accumulated Foreign Earnings Liability	10,800
Federal and State Jurisdiction [Member]
Additional Income Tax Information [Abstract]
Operating loss carryforwards	2,100
Tax credit carryforward	1,500
Tax credit carryforward, valuation allowance	(1,000)
Deferred tax assets, net operating loss carryforwards	400
Federal and State Jurisdiction [Member] \| Array [Member]
Additional Income Tax Information [Abstract]
Operating loss carryforwards	1,800
Foreign Jurisdictions [Member]
Additional Income Tax Information [Abstract]
Operating loss carryforwards	35,600
Tax credit carryforward	300
Operating loss carryforwards, valuation allowance	(8,200)
Deferred tax assets, net operating loss carryforwards	8,200
Foreign Jurisdictions [Member] \| Capital Loss Carryforward [Member]
Additional Income Tax Information [Abstract]
Tax credit carryforward	$ 200
Macao [Member]
Additional Income Tax Information [Abstract]
Federal statutory income tax rate	12.00%
People's Republic of China (PRC) [Member]
Additional Income Tax Information [Abstract]
Federal statutory income tax rate	25.00%

INCOME TAXES, Deferred Income Tax Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred tax assets [Abstract]
State tax credits	$ 1,000	$ 1,033
Unfunded pension liability	605	1,139
Reserves and accruals	2,483	2,828
Federal, state and foreign net operating loss credit carryforwards	8,370	10,524
Depreciation	850	917
Other accruals	5,641	4,915
Total deferred tax assets	18,949	21,356
Deferred tax liabilities [Abstract]
Depreciation	1,666	989
Amortization	7,930	8,490
Other accruals	893	946
Total deferred tax liabilities	10,489	10,425
Valuation allowance	9,200	8,343
Net deferred tax assets		$ 2,588
Net deferred tax liabilities	$ (740)

DEBT (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
DEBT (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Jun. 19, 2014
Credit and Security Agreement [Abstract]
Deferred financing costs	$ 2,300	$ 1,800	$ 2,300
Debt issuance cost payment		0	2,012
Amortization of deferred financing costs		531	2,259
Scheduled principal payments [Abstract]
Total long-term debt	122,700	114,200	122,700
Less: Current maturities of long-term debt	(2,641)	(2,508)	(2,641)
Noncurrent portion of long-term debt	$ 120,053	$ 111,705	$ 120,053
KeyBank [Member]
Credit and Security Agreement [Abstract]
Interest rate on borrowings outstanding	3.38%	4.31%	3.38%
Effective LIBOR rate		2.56%	1.63%
Basis spread on variable rate		1.75%	1.75%
Interest expense incurred		$ 5,300	$ 6,800
Scheduled principal payments [Abstract]
2019		2,974
2020		5,948
2021		5,948
2022		101,118
Total long-term debt	$ 125,000	115,988	125,000
Less: Current maturities of long-term debt		(2,974)
Noncurrent portion of long-term debt		113,014
KeyBank [Member] \| Revolving Credit Facility [Member]
Credit and Security Agreement [Abstract]
Line of credit, amount outstanding	0	0	0
Unused borrowing capacity	75,000	$ 75,000	$ 75,000
KeyBank [Member] \| 2014 Credit and Security Agreement [Member]
Credit and Security Agreement [Abstract]
Deferred financing costs						$ 5,800
Deferred financing costs amortization period		5 years
KeyBank [Member] \| 2014 Credit and Security Agreement [Member] \| Revolving Credit Facility [Member]
Credit and Security Agreement [Abstract]
Maximum borrowing capacity				$ 50,000
KeyBank [Member] \| 2014 Credit and Security Agreement [Member] \| Term Loan [Member]
Credit and Security Agreement [Abstract]
Maximum borrowing capacity				145,000
KeyBank [Member] \| 2014 Credit and Security Agreement [Member] \| Delayed Draw Term Loan [Member]
Credit and Security Agreement [Abstract]
Maximum borrowing capacity				70,000
KeyBank [Member] \| 2016 Amendment [Member]
Credit and Security Agreement [Abstract]
Deferred financing costs					$ 500
Debt issuance cost payment				$ 700
KeyBank [Member] \| 2017 Amendment and Refinancing [Member]
Credit and Security Agreement [Abstract]
Debt issuance cost payment		$ 1,800
Line of credit facility, maturity date		Dec. 11, 2022
Mandatory amortization payment period		4 years
Amortization of deferred financing costs	$ 1,000
Percentage of capital stock of foreign subsidiaries given as collateralized security to line of credit		65.00%
KeyBank [Member] \| 2017 Amendment and Refinancing [Member] \| LIBOR [Member]
Credit and Security Agreement [Abstract]
Basis spread on variable rate		1.00%
Term of variable rate		1 month
KeyBank [Member] \| 2017 Amendment and Refinancing [Member] \| LIBOR [Member] \| Minimum [Member]
Credit and Security Agreement [Abstract]
Basis spread on variable rate		1.375%
KeyBank [Member] \| 2017 Amendment and Refinancing [Member] \| LIBOR [Member] \| Maximum [Member]
Credit and Security Agreement [Abstract]
Basis spread on variable rate		2.75%
KeyBank [Member] \| 2017 Amendment and Refinancing [Member] \| Federal Funds Rate [Member]
Credit and Security Agreement [Abstract]
Basis spread on variable rate		0.50%
KeyBank [Member] \| 2017 Amendment and Refinancing [Member] \| Alternate Base Rate [Member] \| Minimum [Member]
Credit and Security Agreement [Abstract]
Basis spread on variable rate		0.375%
KeyBank [Member] \| 2017 Amendment and Refinancing [Member] \| Alternate Base Rate [Member] \| Maximum [Member]
Credit and Security Agreement [Abstract]
Basis spread on variable rate		1.75%
KeyBank [Member] \| 2017 Amendment and Refinancing [Member] \| Revolving Credit Facility [Member]
Credit and Security Agreement [Abstract]
Maximum borrowing capacity		$ 75,000
KeyBank [Member] \| 2017 Amendment and Refinancing [Member] \| Term Loan [Member]
Credit and Security Agreement [Abstract]
Maximum borrowing capacity		$ 125,000

ACCRUED EXPENSES (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
ACCRUED EXPENSES [Abstract]
Sales commissions	$ 2,609	$ 2,461
Subcontracting labor	1,550	1,408
Salaries, bonuses and related benefits	18,275	16,531
Warranty accrual	1,078	1,769
Other	8,778	8,339
Accrued expenses	$ 32,290	$ 30,508

SEGMENTS, Key Financial Data (Details) $ in Thousands	12 Months Ended
SEGMENTS, Key Financial Data (Details) $ in Thousands	Dec. 31, 2018 USD ($) Segment Industry	Dec. 31, 2017 USD ($)
SEGMENTS [Abstract]
Number of industry in which entity operates \| Industry	1
Number of reportable operating segments \| Segment	3
Summary of key financial data [Abstract]
Net sales	$ 548,184	$ 491,611
Income from operations	29,611	17,386
Total assets	443,524	431,265
Purchases of property, plant and equipment	11,594	6,425
Depreciation and amortization expense	18,207	20,718
Restructuring charges	222	308
North America [Member]
Summary of key financial data [Abstract]
Net sales	271,691	245,834
Asia [Member]
Summary of key financial data [Abstract]
Net sales	187,203	167,680
Europe [Member]
Summary of key financial data [Abstract]
Net sales	89,290	78,097
Reportable Operating Segments [Member] \| North America [Member]
Summary of key financial data [Abstract]
Net sales	284,245	257,541
Income from operations	6,769	6,195
Total assets	177,902	172,674
Purchases of property, plant and equipment	4,836	1,734
Depreciation and amortization expense	8,906	10,641
Reportable Operating Segments [Member] \| Asia [Member]
Summary of key financial data [Abstract]
Net sales	279,965	249,506
Income from operations	16,621	8,964
Total assets	175,713	152,447
Purchases of property, plant and equipment	5,661	2,617
Depreciation and amortization expense	5,842	6,728
Reportable Operating Segments [Member] \| Europe [Member]
Summary of key financial data [Abstract]
Net sales	103,853	89,765
Income from operations	6,221	2,227
Total assets	89,909	106,144
Purchases of property, plant and equipment	1,097	2,074
Depreciation and amortization expense	3,459	3,349
Intersegment Eliminations [Member]
Summary of key financial data [Abstract]
Net sales	$ (119,879)	$ (105,201)

SEGMENTS, Entity Wide Information (Details) $ in Thousands	12 Months Ended
SEGMENTS, Entity Wide Information (Details) $ in Thousands	Dec. 31, 2018 USD ($) Customer	Dec. 31, 2017 USD ($) Customer
Segment Information by Geographic Area [Abstract]
Net sales	$ 548,184	$ 491,611
Long-lived assets	70,013	71,468
Net Sales [Member] \| Customer Concentration Risk [Member]
Segment Information by Geographic Area [Abstract]
Net sales	$ 67,700	$ 57,700
Number of customers representing sales in excess of ten percent \| Customer	1	1
Concentration risk percentage	12.30%	11.70%
Connectivity Solutions [Member]
Segment Information by Geographic Area [Abstract]
Net sales	$ 186,724	$ 170,337
Magnetic Solutions [Member]
Segment Information by Geographic Area [Abstract]
Net sales	185,407	161,011
Power Solutions and Protection [Member]
Segment Information by Geographic Area [Abstract]
Net sales	176,053	160,263
United States [Member]
Segment Information by Geographic Area [Abstract]
Net sales	271,691	245,834
Long-lived assets	27,505	27,594
Macao [Member]
Segment Information by Geographic Area [Abstract]
Net sales	187,204	167,681
United Kingdom [Member]
Segment Information by Geographic Area [Abstract]
Net sales	26,340	24,110
Long-lived assets	2,330	1,345
Slovakia [Member]
Segment Information by Geographic Area [Abstract]
Net sales	24,123	14,194
Long-lived assets	6,475	7,625
Germany [Member]
Segment Information by Geographic Area [Abstract]
Net sales	15,298	13,857
Switzerland [Member]
Segment Information by Geographic Area [Abstract]
Net sales	13,279	15,366
Long-lived assets	3,023	3,632
All Other Foreign Countries [Member]
Segment Information by Geographic Area [Abstract]
Net sales	10,249	10,569
Long-lived assets	1,117	1,121
Asia [Member]
Segment Information by Geographic Area [Abstract]
Net sales	$ 187,203	167,680
Asia [Member] \| Assets [Member] \| Geographic Concentration Risk [Member]
Segment Information by Geographic Area [Abstract]
Concentration risk percentage	41.30%
Asia [Member] \| Connectivity Solutions [Member]
Segment Information by Geographic Area [Abstract]
Net sales	$ 17,140
Asia [Member] \| Magnetic Solutions [Member]
Segment Information by Geographic Area [Abstract]
Net sales	137,998
Asia [Member] \| Power Solutions and Protection [Member]
Segment Information by Geographic Area [Abstract]
Net sales	32,065
People's Republic of China (PRC) [Member]
Segment Information by Geographic Area [Abstract]
Long-lived assets	$ 29,563	$ 30,151

RETIREMENT FUND AND PROFIT SHARING PLAN, Employees' Savings Plan (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Compensation Expenses [Abstract]
Employer match of the first 1% of compensation contributed by participants	100.00%
Percentage of participant contribution under condition one	1.00%
Employer match of the next 5% compensation contributed by participants, percentage	50.00%
Percentage of employee deferrals under condition two	5.00%
UNITED STATES \| Common Class A [Member]
Compensation Expenses [Abstract]
Shares owned by plan (in shares)	114,839
UNITED STATES \| Common Class B [Member]
Compensation Expenses [Abstract]
Shares owned by plan (in shares)	127,733
HONG KONG
Compensation Expenses [Abstract]
Employer matching contribution, percentage	7.00%
HONG KONG \| Minimum [Member]
Compensation Expenses [Abstract]
Employer matching contribution, percentage	5.00%
HONG KONG \| Maximum [Member]
Compensation Expenses [Abstract]
Employee matching contribution per participant under prior plan	5.00%
Retirement Fund [Member] \| HONG KONG
Compensation Expenses [Abstract]
Compensation expenses	$ 0.3	$ 0.3
Retirement Fund [Member] \| HONG KONG \| Common Class A [Member]
Compensation Expenses [Abstract]
Shares owned by plan (in shares)	3,323
Retirement Fund [Member] \| HONG KONG \| Common Class B [Member]
Compensation Expenses [Abstract]
Shares owned by plan (in shares)	17,342
401K Plan [Member] \| UNITED STATES
Compensation Expenses [Abstract]
Compensation expenses	$ 1.3	$ 1.2

RETIREMENT FUND AND PROFIT SHARING PLAN, SERP (Details) - SERP [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan, Additional Information [Abstract]
Pension expense	$ 1.8	$ 1.7
Normal retirement age	65 years
Number of years of service	20 years
Number of years of plan participation	5 years
Percentage of average base compensation payable as normal retirement benefit under the plan	40.00%
Early retirement age	55 years
Number of consecutive calendar years of plan participation to calculate average base compensation	20 years
Number of monthly payments under the death benefit of the plan	120 months
Period for which beneficiary is entitled to receive benefit	shorter of (i) the time necessary to complete 120 monthly payments or (ii) 60 months
Percentage of participant's annual base salary received by beneficiary for one year from date of death	100.00%
Period for which beneficiary will receive hundred percent annual base salary	1 year
Percentage of participant's annual base salary received by beneficiary for years two through five following date of death	50.00%
Period for which beneficiary will receive fifty percent annual base salary	4 years
Minimum [Member]
Defined Benefit Plan, Additional Information [Abstract]
Number of monthly payments entitled to beneficiary in case participant dies prior to receiving one hundred twenty monthly payments	60 months

RETIREMENT FUND AND PROFIT SHARING PLAN, SERP, Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember	us-gaap:DefinedBenefitPlanTypeExtensibleList
SERP [Member]
Components of SERP expense [Abstract]
Service cost	$ 732	$ 700
Interest cost	664	673
Net amortization	443	375
Net periodic benefit cost	$ 1,839	$ 1,748

RETIREMENT FUND AND PROFIT SHARING PLAN, SERP, Obligations and Funded Status (Details) - SERP [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Change in fair value of plan assets [Roll Forward]
Fair value of plan assets, beginning of period	$ 0	$ 0
Company contributions	325	240
Benefits paid	(325)	(240)
Fair value of plan assets, end of period	0	0
Change in benefit obligation [Roll Forward]
Benefit obligation, beginning of period	19,134	16,900
Service cost	732	700
Interest cost	664	673
Benefits paid	(325)	(240)
Plan amendments	39	198
Actuarial (gains) losses	(1,568)	903
Benefit obligation, end of period	18,676	19,134
Funded (unfunded) status of plan [Abstract]
Underfunded status, December 31	(18,676)	(19,134)
Other disclosures [Abstract]
Accumulated benefit obligation	16,500	16,100
Fair value of life insurance policies and marketable securities held in a rabbi trust	13,000	14,000
Estimated net loss and prior service cost that will be amortized from accumulated other comprehensive income into net periodic benefit cost over the next fiscal year	200
Expected employer contributions in next fiscal year	300
Expected future benefit payments [Abstract]
2019	379
2020	659
2021	679
2022	902
2023	941
2024 - 2028	5,409
Amounts recognized in accumulated other comprehensive loss, pretax [Abstract]
Prior service cost	918	1,135
Net loss	1,977	3,732
Total amounts recognized in accumulated other comprehensive loss	$ 2,895	$ 4,867

RETIREMENT FUND AND PROFIT SHARING PLAN, SERP, Actuarial Assumptions (Details) - SERP [Member]	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Net periodic benefit cost [Abstract]
Discount rate	3.50%	4.00%
Rate of compensation increase	3.00%	3.00%
Benefit obligation [Abstract]
Discount rate	4.00%	3.50%
Rate of compensation increase	2.50%	3.00%

SHARE-BASED COMPENSATION (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]
Pretax stock based compensation cost	$ 2,835	$ 3,030
Percentage of increments earned for share awards	25.00%
Restricted Stock [Member]
Shares [Roll Forward]
Outstanding, beginning of period (in shares)	424,500
Granted (in shares)	262,000
Vested (in shares)	(129,600)
Forfeited (in shares)	(29,000)
Outstanding, end of period (in shares)	527,900	424,500
Weighted Average Award Price [Roll Forward]
Outstanding, beginning of period (in dollars per share)	$ 23.23
Granted (in dollars per share)	24.68
Vested (in dollars per share)	21.88
Forfeited (in dollars per share)	21.69
Outstanding, end of period (in dollars per share)	$ 24.37	$ 23.23
Weighted Average Remaining Contractual Term [Abstract]
Outstanding	3 years 6 months	3 years
Pretax unrecognized compensation cost	$ 8,700
Period over which compensation cost is expected to be recognized	3 years 9 months 18 days
Restricted Stock [Member] \| Common Class B [Member]
Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]
Number of shares issued (in shares)	262,000	46,400
2011 Equity Compensation Plan [Member] \| Restricted Stock [Member] \| Common Class B [Member]
Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]
Number of shares authorized under the plan (in shares)	1,400,000
Common shares available for future issuance (in shares)	359,100

COMMON STOCK (Details) $ / shares in Units, $ in Millions	12 Months Ended
COMMON STOCK (Details) $ / shares in Units, $ in Millions	Dec. 31, 2018 USD ($) Shareholder $ / shares	Dec. 31, 2017 USD ($) $ / shares
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Number of days from trigger date to purchase Class B common shares	90 days
Percentage of common stock held by shareholder one	23.60%
Common stock dividends declared \| $	$ 3.3	$ 3.3
Minimum [Member]
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Percentage of outstanding common stock held by shareholders	10.00%
Threshold to be met to trigger the Class B protection clause	10.00%
Maximum [Member]
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Percentage shareholding of class B considered as per class B Protection clause	10.00%
Class A [Member]
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Number of shareholders with ownership in excess of ten percent \| Shareholder	1
Common stock dividends declared each quarter (in dollars per share)	$ 0.06	$ 0.06
Class B [Member]
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Common stock dividends declared each quarter (in dollars per share)	$ 0.07	$ 0.07

COMMITMENTS AND CONTINGENCIES (Details) $ in Thousands				12 Months Ended
COMMITMENTS AND CONTINGENCIES (Details) $ in Thousands	Aug. 27, 2018 USD ($)	Aug. 27, 2018 CNY (¥)	Jul. 09, 2018 CNY (¥)	Dec. 31, 2018 USD ($) Defendant	Dec. 31, 2018 EUR (€) Defendant	Dec. 31, 2018 CNY (¥) Defendant	Dec. 31, 2017 USD ($)	Dec. 31, 2015 Subsidiary
Future minimum lease payments for operating leases [Abstract]
2019				$ 7,363
2020				6,017
2021				4,967
2022				3,338
2023				1,194
Thereafter				442
Total future minimum lease payments for operating leases				23,321
Rent expense for leases				8,000			$ 8,200
Other commitments [Abstract]
Outstanding purchase orders related to raw materials				58,900			45,400
Outstanding purchase orders related to capital expenditures				5,200			$ 3,000
Dongguan Transpower [Member]
Loss Contingency, Estimate [Abstract]
Damages received with incurred interest	$ 3,200	¥ 20,430,203
Arezzo Revenue Agency [Member]
Loss Contingency, Estimate [Abstract]
Estimated liability				$ 12,000
Setec [Member]
Loss Contingency, Estimate [Abstract]
Number of subsidiaries named in the lawsuit \| Subsidiary								3
Setec [Member] \| Dongguan Transpower [Member]
Loss Contingency, Estimate [Abstract]
Amount paid in exchange for perpetual, worldwide royalty-free license to patent-in-suit \| €					€ 75,000
DG Yu Shing Industrial Development Company Limited [Member] \| Dongguan Transpower [Member]
Loss Contingency, Estimate [Abstract]
Number of defendants \| Defendant				3	3	3
Damages sought				$ 3,200
Damages awarded \| ¥						¥ 20,133,174.10
Jinmei Entities [Member]
Loss Contingency, Estimate [Abstract]
Damages received with incurred interest \| ¥			¥ 20,133,174

ACCUMULATED OTHER COMPREHENSIVE LOSS, Components of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Accumulated other comprehensive loss [Abstract]
Foreign currency translation adjustment	$ (22,635)	$ (16,537)
Unrealized holding gain on available-for-sale securities, net of taxes of $0 and $85 as of December 31, 2018 and 2017	12	145
Unfunded SERP liability, net of taxes of ($680) and ($1,635) as of December 31, 2018 and 2017	(2,215)	(3,233)
Accumulated other comprehensive loss	(24,838)	(19,625)
Accumulated other comprehensive loss, tax [Abstract]
Unrealized holding gains on available-for-sale securities, tax	0	85
Change in unfunded SERP liability, tax	$ (680)	$ (1,635)

ACCUMULATED OTHER COMPREHENSIVE LOSS, Changes in Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Thousands

12 Months Ended

Dec. 31, 2018

Dec. 31, 2017

Dec. 31, 2016

Changes in Accumulated Other Comprehensive (Loss) Income by Component [Roll Forward]

Balance

$ 157,960

$ 158,434

Other comprehensive income (loss) before reclassifications

(5,382)

11,427

Amounts reclassified from accumulated other comprehensive income (loss)

169

245

Net current period other comprehensive income (loss)

(5,213)

11,672

$ 0

Balance

176,470

157,960

158,434

Accumulated Other Comprehensive Income (Loss) [Member]

Changes in Accumulated Other Comprehensive (Loss) Income by Component [Roll Forward]

Balance

(19,625)

(31,297)

Balance

(24,838)

(19,625)

(31,297)

Foreign Currency Translation Adjustment [Member]

Changes in Accumulated Other Comprehensive (Loss) Income by Component [Roll Forward]

Balance

(16,537)

(28,976)

Other comprehensive income (loss) before reclassifications

(6,098)

12,439

Amounts reclassified from accumulated other comprehensive income (loss)

Net current period other comprehensive income (loss)

(6,098)

12,439

Balance

(22,635)

(16,537)

(28,976)

Unrealized Holding Gains on Available-for-Sale Securities [Member]

Changes in Accumulated Other Comprehensive (Loss) Income by Component [Roll Forward]

Balance

145

424

Other comprehensive income (loss) before reclassifications

(279)

Amounts reclassified from accumulated other comprehensive income (loss)

(170)

Net current period other comprehensive income (loss)

(133)

(279)

Balance

145

424

Unfunded SERP Liability [Member]

Changes in Accumulated Other Comprehensive (Loss) Income by Component [Roll Forward]

Balance

(3,233)

(2,745)

Other comprehensive income (loss) before reclassifications

679

(733)

Amounts reclassified from accumulated other comprehensive income (loss)

^[1]

339

245

Net current period other comprehensive income (loss)

1,018

(488)

Balance

$ (2,215)

$ (3,233)

$ (2,745)

[1]	This reclassification relates to the amortization of prior service costs and gains/losses associated with the Company's SERP plan. This expense is allocated between cost of sales and selling, general and administrative expense based upon the employment classification of the plan participants.

RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2017	Dec. 31, 2018
Related Party Transaction [Abstract]
Gain from divestiture of business		$ 0.5
Power Solutions [Member]
Related Party Transaction [Abstract]
Minority interest ownership percentage			49.00%
People's Republic of China Joint Venture [Member]
Related Party Transaction [Abstract]
Inventory purchase payment from joint venture		$ 0.0
Extinguishment of debt	$ 0.5