Vishay Intertechnology (VSH) 10-Q 12 May 20 2020 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Apr. 04, 2020	May 08, 2020
Entity Listings [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Quarterly Report	true
Document Period End Date	Apr. 4, 2020
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity Registrant Name	VISHAY INTERTECHNOLOGY INC
Entity Incorporation, State or Country Code	DE
Entity File Number	001-07416
Entity Tax Identification Number	38-1686453
Entity Address, Address Line One	63 LANCASTER AVENUE
Entity Address, City or Town	MALVERN
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	19355
City Area Code	610
Local Phone Number	644-1300
Entity Filer Category	Large Accelerated Filer
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Small Business	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Entity Central Index Key	0000103730
Trading Symbol	VSH
Security Exchange Name	NYSE
Title of 12(b) Security	Common stock, par value $0.10 per share
Class B Convertible Common Stock [Member]
Entity Listings [Line Items]
Entity Common Stock, Shares Outstanding		12,097,409
Common stock, par value $0.10 per share [Member]
Entity Listings [Line Items]
Entity Common Stock, Shares Outstanding		132,547,608

Consolidated Condensed Balance

Consolidated Condensed Balance Sheets - USD ($) $ in Thousands	Apr. 04, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 680,703	$ 694,133
Short-term investments	140,725	108,822
Accounts receivable, net	325,704	328,187
Inventories:
Finished goods	122,231	122,466
Work in process	202,318	187,354
Raw materials	128,639	121,860
Total inventories	453,188	431,680
Prepaid expenses and other current assets	124,871	141,294
Total current assets	1,725,191	1,704,116
Property and equipment, at cost:
Land	74,442	75,011
Buildings and improvements	579,161	585,064
Machinery and equipment	2,591,804	2,606,355
Construction in progress	105,832	110,722
Allowance for depreciation	(2,426,757)	(2,425,627)
Property and equipment, net	924,482	951,525
Right of use assets	99,506	93,162
Goodwill	150,288	150,642
Other intangible assets, net	60,468	60,659
Other assets	156,569	160,671
Total assets	3,116,504	3,120,775
Current liabilities:
Notes payable to banks	199	2
Trade accounts payable	153,999	173,915
Payroll and related expenses	116,456	122,100
Lease liabilities	21,033	20,217
Other accrued expenses	174,556	186,463
Income taxes	24,030	17,731
Total current liabilities	490,273	520,428
Long-term debt less current portion	552,096	499,147
U.S. transition tax payable	140,196	140,196
Deferred income taxes	20,627	22,021
Long-term lease liabilities	83,440	78,511
Other liabilities	94,762	100,207
Accrued pension and other postretirement costs	265,284	272,402
Total liabilities	1,646,678	1,632,912
Redeemable convertible debentures	0	174
Vishay stockholders' equity
Common stock	13,255	13,235
Class B convertible common stock	1,210	1,210
Capital in excess of par value	1,416,260	1,425,170
Retained earnings (accumulated deficit)	84,570	72,180
Accumulated other comprehensive income (loss)	(48,174)	(26,646)
Total Vishay stockholders' equity	1,467,121	1,485,149
Noncontrolling interests	2,705	2,540
Total equity	1,469,826	1,487,689
Total liabilities, temporary equity, and equity	$ 3,116,504	$ 3,120,775

Consolidated Condensed Statemen

Consolidated Condensed Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 04, 2020	Mar. 30, 2019
Consolidated Condensed Statements of Operations [Abstract]
Net revenues	$ 612,841	$ 745,159
Costs of products sold	465,601	534,000
Gross profit	147,240	211,159
Selling, general, and administrative expenses	99,832	103,424
Operating income	47,408	107,735
Other income (expense):
Interest expense	(8,552)	(8,392)
Loss on early extinguishment of debt	(2,920)	(1,307)
Other	198	1,912
Total other income (expense)	(11,274)	(7,787)
Income before taxes	36,134	99,948
Income tax expense	8,750	24,307
Net earnings	27,384	75,641
Less: net earnings attributable to noncontrolling interests	165	182
Net earnings attributable to Vishay stockholders	$ 27,219	$ 75,459
Basic earnings per share attributable to Vishay stockholders (in dollars per share)	$ 0.19	$ 0.52
Diluted earnings per share attributable to Vishay stockholders (in dollars per share)	$ 0.19	$ 0.52
Weighted average shares outstanding - basic (in shares)	144,792	144,554
Weighted average shares outstanding - diluted (in shares)	145,295	145,289
Cash dividends per share (in dollars per share)	$ 0.0950	$ 0.0850

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Apr. 04, 2020	Mar. 30, 2019
Consolidated Statements of Comprehensive Income [Abstract]
Net earnings	$ 27,384	$ 75,641
Other comprehensive income (loss), net of tax
Pension and other post-retirement actuarial items	1,601	1,457
Foreign currency translation adjustment	(23,129)	(9,989)
Other comprehensive income (loss)	(21,528)	(8,532)
Comprehensive income	5,856	67,109
Less: comprehensive income attributable to noncontrolling interests	165	182
Comprehensive income attributable to Vishay stockholders	$ 5,691	$ 66,927

Consolidated Condensed Statem_2

Consolidated Condensed Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Apr. 04, 2020	Mar. 30, 2019
Operating activities
Net earnings	$ 27,384	$ 75,641
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	41,520	40,428
(Gain) loss on disposal of property and equipment	(45)	(173)
Accretion of interest on convertible debt instruments	3,637	3,490
Inventory write-offs for obsolescence	5,643	6,967
Deferred income taxes	(3,517)	(2,614)
Loss on extinguishment of debt	2,920	1,307
Other	3,524	(1,744)
Net change in operating assets and liabilities, net of effects of businesses acquired	(46,588)	(43,784)
Net cash provided by operating activities	34,478	79,518
Investing activities
Capital expenditures	(24,328)	(36,367)
Proceeds from sale of property and equipment	53	395
Purchase of businesses, net of cash received	0	(11,862)
Purchase of short-term investments	(35,463)	(1,920)
Maturity of short-term investments	0	71,455
Other investing activities	(1,507)	2,893
Net cash provided by (used in) investing activities	(61,245)	24,594
Financing activities
Repurchase of convertible debentures	(19,849)	(22,695)
Net proceeds (payments) on revolving credit lines	54,000	0
Net changes in short-term borrowings	85	0
Cash withholding taxes paid when shares withheld for vested equity awards	(1,991)	(2,659)
Net cash provided by (used in) financing activities	18,504	(37,631)
Effect of exchange rate changes on cash and cash equivalents	(5,167)	(3,087)
Net increase (decrease) in cash and cash equivalents	(13,430)	63,394
Cash and cash equivalents at beginning of period	694,133	686,032
Cash and cash equivalents at end of period	680,703	749,426
Common Stock [Member]
Operating activities
Net earnings	0	0
Financing activities
Dividends paid to common stockholders	(12,592)	(11,249)
Class B Convertible Common Stock [Member]
Operating activities
Net earnings	0	0
Financing activities
Dividends paid to common stockholders	$ (1,149)	$ (1,028)

Consolidated Condensed Statem_3

Consolidated Condensed Statements of Equity - USD ($) $ in Thousands	Capital In Excess of Par Value [Member]	Retained Earnings (Accumulated Deficit) [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total Vishay Stockholders' Equity [Member]	Noncontrolling Interests [Member]	Total	Common Stock [Member]	Class B Convertible Common Stock [Member]
Cumulative effect of accounting change for adoption of ASU | ASU 2016-02 [Member]	$ 0	$ 23,013	$ 0	$ 23,013	$ 0	$ 23,013	$ 0	$ 0
Balance at Period Start at Dec. 31, 2018	1,436,011	(61,258)	(6,791)	1,382,384	2,286	1,384,670	13,212	1,210
Net earnings	0	75,459	0	75,459	182	75,641	0	0
Other comprehensive income	0	0	(8,532)	(8,532)	0	(8,532)	0	0
Conversion of Class B shares	0	0	0	0	0	0	0	0
Temporary equity reclassification	3	0	0	3	0	3	0	0
Issuance of stock and related tax withholdings for vested restricted stock units	(2,681)	0	0	(2,659)	0	(2,659)	22	0
Dividends declared	15	(12,292)	0	(12,277)	0	(12,277)	0	0
Stock compensation expense	3,536	0	0	3,536	0	3,536	0	0
Repurchase of convertible senior debentures	(11,783)	0	0	(11,783)	0	(11,783)	0	0
Balance at Period End at Mar. 30, 2019	1,425,101	24,922	(15,323)	1,449,144	2,468	1,451,612	13,234	1,210
Cumulative effect of accounting change for adoption of ASU | ASU 2016-13 [Member]	0	(1,070)	0	(1,070)	0	(1,070)	0	0
Balance at Period Start at Dec. 31, 2019	1,425,170	72,180	(26,646)	1,485,149	2,540	1,487,689	13,235	1,210
Net earnings	0	27,219	0	27,219	165	27,384	0	0
Other comprehensive income	0	0	(21,528)	(21,528)	0	(21,528)	0	0
Temporary equity reclassification	174	0	0	174	0	174	0	0
Issuance of stock and related tax withholdings for vested restricted stock units	(2,011)	0	0	(1,991)	0	(1,991)	20	0
Dividends declared	18	(13,759)	0	(13,741)	0	(13,741)	0	0
Stock compensation expense	2,998	0	0	2,998	0	2,998	0	0
Repurchase of convertible senior debentures	(10,089)	0	0	(10,089)	0	(10,089)	0	0
Balance at Period End at Apr. 04, 2020	$ 1,416,260	$ 84,570	$ (48,174)	$ 1,467,121	$ 2,705	$ 1,469,826	$ 13,255	$ 1,210

Consolidated Condensed Statem_4

Consolidated Condensed Statements of Equity (Parenthetical) - $ / shares	3 Months Ended
	Apr. 04, 2020	Mar. 30, 2019
Consolidated Condensed Statements of Equity (Parenthetical) [Abstract]
Conversion of Class B shares (in shares)		18
Restricted stock issuances (in shares)	199,251	220,718
Dividends declared (in dollars per share)	$ 0.0950	$ 0.0850

Basis of Presentation

Basis of Presentation	3 Months Ended
	Apr. 04, 2020
Basis of Presentation [Abstract]
Basis of Presentation	Note 1 – Basis of Presentation The accompanying unaudited consolidated condensed financial statements of Vishay Intertechnology, Inc. (“Vishay” or the “Company”) have been prepared in accordance with the instructions to Form 10-Q and therefore do not include all information and footnotes necessary for presentation of financial position, results of operations, and cash flows required by accounting principles generally accepted in the United States (“GAAP”) for complete financial statements. The information furnished reflects all normal recurring adjustments which are, in the opinion of management, necessary for a fair summary of the financial position, results of operations, and cash flows for the interim periods presented. The financial statements should be read in conjunction with the consolidated financial statements filed with the Company’s Annual Report on Form 10-K for the year ended December 31, 2019. The results of operations for the fiscal quarter and three fiscal months ended April 4, 2020 are not necessarily indicative of the results to be expected for the full year. The Company reports interim financial information for 13-week periods beginning on a Sunday and ending on a Saturday, except for the first fiscal quarter, which always begins on January 1, and the fourth fiscal quarter, which always ends on December 31. The four fiscal quarters in 2020 ended on April 4, 2020, July 4, 2020, October 3, 2020, and December 31, 2020, respectively. The four fiscal quarters in 2019 ended on March 30, 2019, June 29, 2019, September 28, 2019, and December 31, 2019, respectively. Recently Adopted Accounting Guidance In June 2016, the Financial Accounting Standards Board ("FASB") issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments Payment terms for the Company's sales are generally less than ninety days. Substantially all of the Company's receivables are collected within twelve months of the transfer of products to the customer and the Company expects this to continue going forward. The credit loss allowance is determined through an analysis of the aging of accounts receivable and assessments of risk that are based on historical trends and an evaluation of the impact of current and projected economic conditions. Receivables from customers with deteriorating financial condition and those over 180 days past due are removed from the pool and evaluated separately. The adoption of ASU 2016-13 on January 1, 2020 had no The Company’s cash equivalents, short-term investments, and restricted investments are accounted for as held-to-maturity debt instruments, at amortized cost. Interest income on these instruments is recorded as “Other income” on the consolidated condensed statements of operations and interest receivable is recognized as a separate asset and recorded in “Prepaid expenses and other current assets” on the consolidated condensed balance sheets. The Company has not experienced a credit loss on the principal or interest receivable of its cash equivalents, short-term investments, or restricted investments. The Company pools its cash equivalents, short-term investments, and restricted investments by credit rating of the issuing financial institution and estimates an allowance for credit losses based on the corporate bond default ratios, evaluation of the impact of current and projected economic conditions, and probability of credit loss. The Company recorded a cumulative-effect adjustment of $810 to January 1, 2020 retained earnings to recognize an allowance for credit losses for these financial instruments upon the adoption of ASU 2016-13. The Company does not measure an allowance for credit losses on interest receivable. Any uncollectible interest receivable will be recognized by reversing interest income within the fiscal quarter that the interest becomes uncollectible. The Company has an immaterial amount of other short-term held-to-maturity debt instruments recorded within “Prepaid expenses and other current assets” on the consolidated condensed balance sheets. The Company analyzes these assets on a separate asset basis and estimates an allowance for credit losses based on historical credit loss rates and an evaluation of the impact of current and projected economic conditions. The Company recorded a cumulative-effect adjustment of $260 to January 1, 2020 retained earnings to recognize an allowance for credit losses for these financial instruments upon the adoption of ASU 2016-13. Reclassifications Certain prior period amounts have been reclassified to conform to the current financial statement presentation.

Impact of Coronavirus Outbreak

Impact of Coronavirus Outbreak	3 Months Ended
	Apr. 04, 2020
Impact of Coronavirus Outbreak [Abstract]
Coronavirus	Note 2 – Impact of Coronavirus Outbreak The Company's operations have been impacted by the coronavirus ("COVID-19") outbreak. Some manufacturing facilities are or were temporarily closed and some are operating at levels less than full capacity. The Company has incurred incremental costs separable from normal operations that are directly related to the outbreak and containment efforts, primarily , which were partially offset by government subsidies. The net impact of the costs and subsidies are reported as cost of products sold ($ ) and selling, general, and administrative expenses ($ ) based on employee function on the consolidated condensed statement of operations. The Company's insurance coverages generally exclude losses incurred due to pandemics. Any amounts that may be received will not be recognized until all contingencies are settled.

Leases

Leases	3 Months Ended
	Apr. 04, 2020
Leases [Abstract]
Leases	Note 3 – Leases The Company leases buildings and machinery and equipment used for manufacturing and/or sales and administrative purposes. The Company is also party to various service, warehousing, and other agreements that it evaluates for potential embedded leases. The Company leases assets in each region in which it operates. No individual lease is considered significant and there are no leases that have not yet commenced that are considered significant. The net right of use assets and lease liabilities recognized on the consolidated condensed balance sheets for the Company's operating leases were as follows: April 4, 2020 December 31, 2019 Right of use assets Operating Leases Buildings and improvements $ 94,353 $ 87,689 Machinery and equipment 5,153 5,473 Total $ 99,506 $ 93,162 Current lease liabilities Operating Leases Buildings and improvements $ 18,324 $ 17,410 Machinery and equipment 2,709 2,807 Total $ 21,033 $ 20,217 Long-term lease liabilities Operating Leases Buildings and improvements $ 81,036 $ 75,877 Machinery and equipment 2,404 2,634 Total $ 83,440 $ 78,511 Total lease liabilities $ 104,473 $ 98,728 Lease expense is classified on the statement of operations based on asset use. Total lease cost recognized on the consolidated condensed statements of operations is as follows: Fiscal quarters ended April 4, 2020 March 30, 2019 Lease expense Operating lease expense $ 5,652 $ 5,536 Short-term lease expense 194 833 Variable lease expense 23 12 Total lease expense $ 5,869 $ 6,381 The Company paid $5,609 and $5,050 for its operating leases in the three fiscal months ended April 4, 2020 and March 30, 2019, respectively, which are included in operating cash flows on the consolidated condensed statements of cash flows. The weighted-average remaining lease term for the Company's operating leases is 8.8 years and the weighted-average discount rate is 5.9% as of April 4, 2020. The undiscounted future lease payments for the Company's operating lease liabilities are as follows: April 4, 2020 2020 (excluding the three fiscal months ended April 4, 2020) $ 16,499 2021 19,647 2022 16,044 2023 13,699 2024 12,640 Thereafter 57,162 The undiscounted future lease payments presented in the table above include payments through the term of the lease, which may include periods beyond the noncancellable term. The difference between the total payments above and the lease liability balance is due to the discount rate used to calculate lease liabilities.

Restructuring and Related Activ

Restructuring and Related Activities	3 Months Ended
	Apr. 04, 2020
Restructuring and Related Activities [Abstract]
Restructuring and Related Activities	Note 4 – Restructuring and Related Activities I The programs are primarily designed to reduce manufacturing fixed costs and selling, general, and administrative costs company-wide, and provide management rejuvenation. The Company expects to incur charges of approximately $25,000, primarily related to cash severance costs, to implement these programs. The Company expects these cost reductions to be fully achieved by December 2020. The following table summarizes the activity to date related to this program: Expense recorded in 2019 $ 24,139 Cash paid (1,330 ) Foreign currency translation 35 Balance at December 31, 2019 $ 22,844 Cash paid (3,742 ) Foreign currency translation (307 ) Balance at April 4, 2020 $ 18,795 The payment terms vary by country, but generally are paid in a lump sum at cessation of employment. The current portion of the liability is $15,348 and is included in other accrued expenses on the consolidated condensed balance sheet. The non-current portion of the liability is $3,447 and is included in other liabilities on the consolidated condensed balance sheet.

Income Taxes

Income Taxes	3 Months Ended
	Apr. 04, 2020
Income Taxes [Abstract]
Income Taxes	Note 5 – Income Taxes The provision for income taxes consists of provisions for federal, state, and foreign income taxes. The effective tax rates for the periods ended April 4, 2020 and March 30, 2019 reflect the Company’s expected tax rate on reported income from continuing operations before income tax and tax adjustments. The Company operates in a global environment with significant operations in various jurisdictions outside the United States. Accordingly, the consolidated income tax rate is a composite rate reflecting the Company’s earnings and the applicable tax rates in the various jurisdictions where the Company operates. The Company has approximately $100,000 of unremitted foreign earnings that it has deemed not permanently reinvested and thus has accrued foreign withholding and other taxes. The Company plans to repatriate these foreign earnings in the second fiscal quarter of 2020. The Company repurchased a portion of outstanding convertible debentures in the first fiscal quarters of 2020 and 2019 (see Note 6). The Company recognized tax benefits on the pre-tax loss on early extinguishment of debt. The Company also recognized tax benefits of $1,346 and $1,312 in the first fiscal quarters of 2020 and 2019, respectively, reflecting the reduction in deferred tax liabilities related to the special tax attributes of the extinguished debentures. Income tax expense for the first fiscal quarter of 2019 includes tax benefits of $585 for the periodic remeasurement of the deferred tax liability recorded for the foreign taxes associated with the Company's cash repatriation program. During the fiscal quarter ended April 4, 2020, the liabilities for unrecognized tax benefits decreased by $1,264 on a net basis, primarily due to currency translation adjustments and the expiration of a statute, partially offset by interest.

Long-Term Debt

Long-Term Debt	3 Months Ended
	Apr. 04, 2020
Long-Term Debt [Abstract]
Long-Term Debt	Note 6 – Long-Term Debt Long-term debt consists of the following: April 4, 2020 December 31, 2019 Credit facility $ 54,000 $ - Convertible senior notes, due 2025 512,745 509,128 Convertible senior debentures, due 2040 127 126 Convertible senior debentures, due 2041 1,050 6,677 Deferred financing costs (15,826 ) (16,784 ) 552,096 499,147 Less current portion - - $ 552,096 $ 499,147 The following table summarizes some key facts and terms regarding the outstanding convertible debt instruments as of April 4, 2020: Convertible Senior Notes Due 2025 Convertible Senior Debentures Due 2040 Convertible Senior Debentures Due 2041 Issuance date June 12, 2018 November 9, 2010 May 13, 2011 Maturity date June 15, 2025 November 15, 2040 May 15, 2041 Principal amount as of April 4, 2020 $ 600,000 $ 300 $ 2,640 Cash coupon rate (per annum) 2.25 % 2.25 % 2.25 % Nonconvertible debt borrowing rate at issuance (per annum) 5.50 % 8.00 % 8.375 % Conversion rate effective March 11, 2020 (per $1 principal amount) 31.8278 80.4668 58.7205 Effective conversion price effective March 11, 2020 (per share) $ 31.42 $ 12.43 $ 17.03 130% of the conversion price (per share) $ 40.85 $ 16.16 $ 22.14 Call date n/a November 20, 2020 May 20, 2021 The terms of the convertible senior debentures due 2040 and due 2041 are generally congruent. Prior to three months before the maturity date, the holders may convert their convertible senior debentures due 2040 and due 2041 only under the following circumstances: (1) during any fiscal quarter after the first full quarter subsequent to issuance, if the sale price of Vishay common stock reaches 130% of the conversion price for a specified period; (2) the trading price of the debentures falls below 98% of the product of the sale price of Vishay's common stock and the conversion rate for a specified period; (3) Vishay calls any or all of the debentures for redemption, at any time prior to the close of business on the third scheduled trading day immediately preceding the redemption date; or (4) upon the occurrence of specified corporate events. The convertible senior debentures due 2040 and due 2041 are not currently convertible. Prior to December 15, 2024, the holders of the convertible senior notes due 2025 may convert their notes only under the following circumstances: (1) during any fiscal quarter after the fiscal quarter ending September 29, 2018, if the sale price of Vishay common stock reaches 130% of the conversion price for a specified period; (2) the trading price of the notes falls below 98% of the product of the sale price of Vishay's common stock and the conversion rate for a specified period; or (3) upon the occurrence of specified corporate transactions. The quarterly cash dividend program of the Company results in adjustments to the conversion rate and effective conversion price for the convertible debt instruments effective as of the ex-dividend date of each cash dividend. The conversion rate and effective conversion price for the convertible senior notes due 2025 is adjusted for quarterly cash dividends to the extent such dividends exceed $0.085 per share of common stock. GAAP requires an issuer to separately account for the liability and equity components of the instrument in a manner that reflects the issuer’s nonconvertible debt borrowing rate when interest costs are recognized in subsequent periods. The resulting discount on the debt is amortized as non-cash interest expense in future periods. The carrying values of the liability and equity components of the convertible debt instruments are reflected in the Company’s consolidated condensed balance sheets as follows: Principal amount of the debt instruments Unamortized discount Carrying value of liability component Equity component (including temporary equity) -net carrying value April 4, 2020 Convertible senior notes due 2025 $ 600,000 (87,255 ) $ 512,745 $ 85,262 Convertible senior debentures due 2040 and due 2041 $ 2,940 (1,763 ) $ 1,177 $ 1,216 Total $ 602,940 $ (89,018 ) $ 513,922 $ 86,478 December 31, 2019 Convertible senior notes due 2025 $ 600,000 (90,872 ) $ 509,128 $ 85,262 Convertible senior debentures due 2040 and due 2041 $ 17,190 (10,387 ) $ 6,803 $ 7,129 Total $ 617,190 $ (101,259 ) $ 515,931 $ 92,391 Interest is payable on the convertible debt instruments semi-annually at the cash coupon rate; however, the remaining debt discount is being amortized as additional non-cash interest expense using an effective annual interest rate equal to the Company’s estimated nonconvertible debt borrowing rate at the time of issuance. In addition to ordinary interest, contingent interest will accrue in certain circumstances relating to the trading price of the convertible senior debentures due 2040 and due 2041 and under certain other circumstances, beginning in 2020 and 2021, respectively. The convertible senior notes due 2025 do not possess contingent interest features. Interest expense related to the convertible debt instruments is reflected on the consolidated condensed statements of operations for the fiscal quarters ended: Contractual coupon interest Non-cash amortization of debt discount Other non-cash interest expense Total interest expense related to the debt instruments April 4, 2020 Convertible senior notes due 2025 $ 3,375 3,617 454 $ 7,446 Convertible senior debentures $ 44 20 - $ 64 Total $ 3,419 $ 3,637 $ 454 $ 7,510 March 30, 2019 Convertible senior notes due 2025 $ 3,375 3,426 454 $ 7,255 Convertible senior debentures $ 148 64 (16 ) $ 196 Total $ 3,523 $ 3,490 $ 438 $ 7,451 Other non-cash interest expense includes amortization of deferred financing costs and changes in the value of embedded derivative liabilities. The Company used cash to repurchase $14,250 principal amount of convertible senior debentures due 2041 in the first fiscal quarter of 2020. The net carrying value of the debentures repurchased was $5,645. In accordance with the authoritative accounting guidance for convertible debentures, the aggregate repurchase payment of $19,926 was allocated between the liability ($9,837) and equity ($10,089) components of the convertible debentures, using the Company's nonconvertible debt borrowing rate at the time of the repurchase. As a result, the Company recognized a loss on extinguishment of convertible debentures of $2,920, including the write-off of unamortized debt issuance costs.

Revenue Recognition

Revenue Recognition	3 Months Ended
	Apr. 04, 2020
Revenue Recognition [Abstract]
Revenue Recognition	Note 7 – Revenue Recognition Sales returns and allowances accrual activity is shown below: Fiscal quarters ended April 4, 2020 March 30, 2019 Beginning balance $ 40,508 $ 42,663 Sales allowances 22,632 28,211 Credits issued (27,982 ) (33,062 ) Foreign currency (346 ) (235 ) Ending balance $ 34,812 $ 37,577 See disaggregated revenue information in Note 11.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	3 Months Ended
	Apr. 04, 2020
Accumulated Other Comprehensive Income (Loss) [Abstract]
Accumulated Other Comprehensive Income (Loss)	Note 8 – Accumulated Other Comprehensive Income (Loss) The cumulative balance of each component of other comprehensive income (loss) and the income tax effects allocated to each component are as follows: Pension and other post- retirement actuarial items Currency translation adjustment Total Balance at January 1, 2020 $ (68,020 ) $ 41,374 $ (26,646 ) Other comprehensive income before reclassifications - (23,129 ) $ (23,129 ) Tax effect - - $ - Other comprehensive income before reclassifications, net of tax - (23,129 ) $ (23,129 ) Amounts reclassified out of AOCI 2,223 - $ 2,223 Tax effect (622 ) - $ (622 ) Amounts reclassified out of AOCI, net of tax 1,601 - $ 1,601 Net other comprehensive income $ 1,601 $ (23,129 ) $ (21,528 ) Balance at April 4, 2020 $ (66,419 ) $ 18,245 $ (48,174 ) Reclassifications of pension and other post-retirement actuarial items out of AOCI are included in the computation of net periodic benefit cost. See Note 9 for further information.

Pensions and Other Postretireme

Pensions and Other Postretirement Benefits	3 Months Ended
	Apr. 04, 2020
Pensions and Other Postretirement Benefits [Abstract]
Pensions and Other Postretirement Benefits	Note 9 – Pensions and Other Postretirement Benefits The Company maintains various retirement benefit plans. The service cost component of net periodic pension cost is classified in costs of products sold or selling, general, and administrative expenses on the consolidated condensed statements of operations based on the respective employee's function. The other components of net periodic pension cost are classified as other expense on the consolidated condensed statements of operations. Defined Benefit Pension Plans The following table shows the components of the net periodic pension cost for the first fiscal quarters of 2020 and 2019 for the Company’s defined benefit pension plans: Fiscal quarter ended April 4, 2020 Fiscal quarter ended March 30, 2019 U.S. Plans Non-U.S. Plans U.S. Plans Non-U.S. Plans Net service cost $ - $ 1,074 $ - $ 852 Interest cost 342 924 424 1,291 Expected return on plan assets - (495 ) - (490 ) Amortization of prior service cost 36 30 36 51 Amortization of losses 298 1,592 118 1,359 Curtailment and settlement losses - 229 - 505 Net periodic benefit cost $ 676 $ 3,354 $ 578 $ 3,568 Other Postretirement Benefits The following table shows the components of the net periodic benefit cost for the first fiscal quarters of 2020 and 2019 for the Company’s other postretirement benefit plans: Fiscal quarter ended April 4, 2020 Fiscal quarter ended March 30, 2019 U.S. Plans Non-U.S. Plans U.S. Plans Non-U.S. Plans Service cost $ 28 $ 69 $ 35 $ 72 Interest cost 59 15 77 30 Amortization of losses (gains) 7 31 (32 ) 27 Net periodic benefit cost $ 94 $ 115 $ 80 $ 129

Stock-Based Compensation

Stock-Based Compensation	3 Months Ended
	Apr. 04, 2020
Stock-Based Compensation [Abstract]
Stock-Based Compensation	Note 10 – Stock-Based Compensation The Company has various stockholder-approved programs which allow for the grant of stock-based compensation to officers, employees, and non-employee directors of the Company. The amount of compensation cost related to stock-based payment transactions is measured based on the grant-date fair value of the equity instruments issued. The Company determines compensation cost for restricted stock units (“RSUs”) and phantom stock units based on the grant-date fair value of the underlying common stock adjusted for expected dividends paid over the required vesting period for non-participating awards. Compensation cost is recognized over the period that an officer, employee, or non-employee director provides service in exchange for the award. The following table summarizes stock-based compensation expense recognized: Fiscal quarters ended April 4, 2020 March 30, 2019 Restricted stock units $ 2,783 $ 3,359 Phantom stock units 215 177 Total $ 2,998 $ 3,536 The Company recognizes compensation cost for RSUs that are expected to vest and records cumulative adjustments in the period that the expectation changes. The following table summarizes unrecognized compensation cost and the weighted average remaining amortization periods at April 4, 2020 (amortization periods in years) Unrecognized Compensation Cost Weighted Average Remaining Amortization Periods Restricted stock units $ 5,041 1.0 Phantom stock units - 0.0 Total $ 5,041 The Company currently expects all performance-based RSUs to vest and all of the associated unrecognized compensation cost for performance-based RSUs presented in the table above to be recognized. 2007 Stock Incentive Plan The Company’s 2007 Stock Incentive Program (the “2007 Program”), as amended and restated, permits the grant of up to 6,500,000 shares of restricted stock, unrestricted stock, RSUs, stock options, and phantom stock units, to officers, employees, and non-employee directors of the Company. Such instruments are available for grant until May 20, 2024. Restricted Stock Units RSU activity under the 2007 Program as of April 4, 2020 and changes during the three fiscal months then ended are presented below (number of RSUs in thousands) Number of RSUs Weighted Average Grant-date Fair Value per Unit Outstanding: January 1, 2020 842 $ 17.93 Granted 272 18.30 Vested* (293 ) 15.52 Cancelled or forfeited - - Outstanding at April 4, 2020 821 $ 18.91 Expected to vest at April 4, 2020 808 * The number of RSUs vested includes shares that the Company withheld on behalf of employees to satisfy the statutory tax withholding requirements . The number of performance-based RSUs that are scheduled to vest increases ratably based on the achievement of defined performance criteria between the established target and maximum levels. RSUs with performance-based vesting criteria are expected to vest as follows (number of RSUs in thousands) Vesting Date Expected to Vest Not Expected to Vest Total January 1, 2021 141 - 141 January 1, 2022 174 - 174 January 1, 2023 152 - 152 Phantom Stock Units The 2007 Program authorizes the grant of phantom stock units to the extent provided for in the Company’s employment agreements with certain executives. Each phantom stock unit entitles the recipient to receive a share of common stock at the individual’s termination of employment or any other future date specified in the applicable employment agreement. Phantom stock units participate in dividend distribution on the same basis as the Company's common stock and Class B common stock. Dividend equivalents are issued in the form of additional units of phantom stock. The phantom stock units are fully vested at all times. Phantom stock unit activity under the phantom stock plan as of April 4, 2020 and changes during the three fiscal months then ended are presented below (number of phantom stock units in thousands) Number of units Grant-date Fair Value per Unit Outstanding: January 1, 2020 183 Granted 10 $ 21.49 Dividend equivalents issued 1 Outstanding at April 4, 2020 194

Segment Information

Segment Information	3 Months Ended
	Apr. 04, 2020
Segment Information [Abstract]
Segment Information	Note 11 – Segment Information Vishay is a global manufacturer and supplier of electronic components. Vishay operates, and its chief operating decision maker makes strategic and operating decisions with regards to assessing performance and allocating resources based on, six reporting segments: MOSFETs, Diodes, Optoelectronic Components, Resistors, Inductors, and Capacitors. These segments represent groupings of product lines based on their functionality: ● Metal oxide semiconductor field-effect transistors ("MOSFETs") function as solid-state switches to control power. ● Diodes route, regulate, and block radio frequency, analog, and power signals; protect systems from surges or electrostatic discharge damage; or provide electromagnetic interference filtering. ● Optoelectronic components emit light, detect light, or do both. ● Resistors are basic components used in all forms of electronic circuitry to adjust and regulate levels of voltage and current. ● Inductors use an internal magnetic field to change alternating current phase and resist alternating current. ● Capacitors store energy and discharge it when needed. The current six segment alignment reflects a change in reporting structure made during the fourth fiscal quarter of 2019. The fiscal period ended March 30, 2019 has been recast to separately present Resistors and Inductors. Vishay's reporting segments generate substantially all of their revenue from product sales to the industrial, automotive, telecommunications, computing, consumer products, power supplies, military and aerospace, and medical end markets. A small portion of revenues is from royalties. The Company evaluates business segment performance on operating income, exclusive of certain items (“segment operating income”). Only dedicated, direct selling, general, and administrative expenses of the segments are included in the calculation of segment operating income. The Company’s calculation of segment operating income excludes such selling, general, and administrative costs as global operations, sales and marketing, information systems, finance and administration groups, as well as restructuring and severance costs, the impact of the COVID-19 outbreak, goodwill and long-lived asset impairment charges, and other items. Management believes that evaluating segment performance excluding such items is meaningful because it provides insight with respect to intrinsic operating results of the Company. These items represent reconciling items between segment operating income and consolidated operating income. Business segment assets are the owned or allocated assets used by each business. The Company also regularly evaluates gross profit by segment to assist in the analysis of consolidated gross profit. The Company considers segment operating income to be the more important metric because it more fully captures the business operations of the segments. The following tables set forth business segment information: MOSFETs Diodes Optoelectronic Components Resistors Inductors Capacitors Corporate / Other* Total Fiscal quarter ended April 4, 2020 : Net revenues $ 116,893 $ 115,343 $ 54,179 $ 159,208 $ 73,785 $ 93,433 $ - $ 612,841 Gross profit $ 28,152 $ 19,518 $ 14,585 $ 44,773 $ 22,987 $ 20,355 $ (3,130 ) $ 147,240 Segment operating income $ 18,658 $ 14,422 $ 10,686 $ 38,885 $ 20,310 $ 15,070 $ (3,130 ) $ 114,901 Fiscal quarter ended March 30, 2019 : Net revenues $ 137,341 $ 167,840 $ 60,562 $ 188,831 $ 71,640 $ 118,945 $ - $ 745,159 Gross profit $ 36,059 $ 43,492 $ 16,017 $ 62,589 $ 23,280 $ 29,722 $ - $ 211,159 Segment operating income $ 26,678 $ 38,128 $ 11,710 $ 56,347 $ 20,640 $ 24,566 $ - $ 178,069 * Amounts reported in Corporate/Other above represent unallocated costs directly related to the COVID-19 outbreak, which are reported as costs of products sold on the consolidated condensed statement of operations. Fiscal quarters ended April 4, 2020 March 30, 2019 Reconciliation: Segment Operating Income $ 114,901 $ 178,069 Impact of COVID-19 Outbreak on Selling, General, and Administrative Expenses (317 ) - Unallocated Selling, General, and Administrative Expenses (67,176 ) (70,334 ) Consolidated Operating Income $ 47,408 $ 107,735 Unallocated Other Income (Expense) (11,274 ) (7,787 ) Consolidated Income Before Taxes $ 36,134 $ 99,948 The Company has a broad line of products that it sells to OEMs, EMS companies, and independent distributors. The distribution of sales by customer type is shown below: Fiscal quarters ended April 4, 2020 March 30, 2019 Distributors $ 305,446 $ 411,560 OEMs 261,129 282,636 EMS companies 46,266 50,963 Total Revenue $ 612,841 $ 745,159 Net revenues were attributable to customers in the following regions: Fiscal quarters ended April 4, 2020 March 30, 2019 Asia $ 217,084 $ 259,726 Europe 233,052 278,899 Americas 162,705 206,534 Total Revenue $ 612,841 $ 745,159 The Company generates substantially all of its revenue from product sales to end customers in the industrial, automotive, telecommunications, computing, consumer products, power supplies, military and aerospace, and medical end markets. Sales by end market are presented below: Fiscal quarters ended April 4, 2020 March 30, 2019 Industrial $ 215,111 $ 281,590 Automotive 201,943 214,786 Telecommunications 29,692 53,280 Computing 45,223 47,508 Consumer Products 20,553 34,049 Power Supplies 25,194 30,127 Military and Aerospace 43,935 47,561 Medical 31,190 36,258 Total revenue $ 612,841 $ 745,159

Earnings Per Share

Earnings Per Share	3 Months Ended
	Apr. 04, 2020
Earnings Per Share [Abstract]
Earnings Per Share	Note 12 – Earnings Per Share The following table sets forth the computation of basic and diluted earnings per share attributable to Vishay stockholders (shares in thousands) Fiscal quarters ended April 4, 2020 March 30, 2019 Numerator: Net earnings attributable to Vishay stockholders $ 27,219 $ 75,459 Denominator: Denominator for basic earnings per share: Weighted average shares 144,599 144,375 Outstanding phantom stock units 193 179 Adjusted weighted average shares - basic 144,792 144,554 Effect of dilutive securities: Convertible debt instruments 95 237 Restricted stock units 408 498 Dilutive potential common shares 503 735 Denominator for diluted earnings per share: Adjusted weighted average shares - diluted 145,295 145,289 Basic earnings per share attributable to Vishay stockholders $ 0.19 $ 0.52 Diluted earnings per share attributable to Vishay stockholders $ 0.19 $ 0.52 Diluted earnings per share for the periods presented do not reflect the following weighted average potential common shares that would have an antidilutive effect or have unsatisfied performance conditions (in thousands) Fiscal quarters ended April 4, 2020 March 30, 2019 Convertible debt instruments: Convertible senior notes due 2025 19,088 19,052 Convertible senior debentures due 2041 88 - Weighted average other 325 315 The Company’s convertible debt instruments are only convertible for specified periods upon the occurrence of certain events. The Company's convertible debt instruments are not currently convertible. In periods that the convertible debt instruments are not convertible, the certain conditions which could trigger conversion of the debt instruments have been deemed to be non-substantive, and accordingly, the Company assumes the conversion of these instruments in its diluted earnings per share computation during periods in which they are dilutive. At the direction of its Board of Directors, the Company intends, upon conversion, to repay the principal amounts of any of the convertible debt instruments in cash and settle any additional amounts in shares of Vishay common stock. Accordingly, the convertible instruments are included in the diluted earnings per share computation using the “treasury stock method” (similar to options and warrants) rather than the “if converted method” otherwise required for convertible debt. Under the “treasury stock method,” Vishay calculates the number of shares issuable under the terms of the debentures based on the average market price of Vishay common stock during the period, and that number is included in the total diluted shares figure for the period. If the average market price is less than $12.43, no shares are included in the diluted earnings per share computation for the convertible senior debentures due 2040, if the average market price is less than $17.03, no shares are included in the diluted earnings per share computation for the convertible senior debentures due 2041, and if the average market price is less than $31.42, no shares are included in the diluted earnings per share computation for the convertible senior notes due 2025.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Apr. 04, 2020
Fair Value Measurements [Abstract]
Fair Value Measurements	Note 13 – Fair Value Measurements The fair value measurement accounting guidance establishes a valuation hierarchy of the inputs used to measure fair value. This hierarchy prioritizes the inputs to valuation techniques used to measure fair value into three broad levels. The following is a brief description of those three levels: Level 1: Observable inputs such as quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2: Inputs other than quoted prices that are observable for the asset or liability, either directly or indirectly. These include quoted prices for similar assets or liabilities in active markets and quoted prices for identical or similar assets or liabilities in markets that are not active. Level 3: Unobservable inputs that reflect the Company’s own assumptions. An asset or liability’s classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. There have been no changes in the classification of any financial instruments within the fair value hierarchy in the periods presented. The following table provides the financial assets and liabilities carried at fair value measured on a recurring basis: Total Fair Value Level 1 Level 2 Level 3 April 4, 2020 Assets: Assets held in rabbi trusts $ 48,137 $ 33,687 $ 14,450 $ - Available for sale securities $ 4,073 4,073 - - $ 52,210 $ 37,760 $ 14,450 $ - December 31, 2019 Assets: Assets held in rabbi trusts $ 52,148 $ 34,280 17,868 $ - Available for sale securities $ 4,405 4,405 - - $ 56,553 $ 38,685 $ 17,868 $ - As described in Note 6, the Company allocated the aggregate repurchase payment of convertible senior debentures between the associated liability and equity components of the repurchased convertible senior debentures based on a nonrecurring fair value measurement of the convertible senior debentures due 2041 immediately prior to the repurchase. The nonrecurring fair value measurement is considered a Level 3 measurement. See Note 6 for further information on the measurement and input. The Company maintains non-qualified trusts, referred to as “rabbi” trusts, to fund payments under deferred compensation and non-qualified pension plans. Rabbi trust assets consist primarily of marketable securities, classified as available-for-sale and company-owned life insurance assets. The marketable securities held in the rabbi trusts are valued using quoted market prices on the last business day of the period. The company-owned life insurance assets are valued in consultation with the Company’s insurance brokers using the value of underlying assets of the insurance contracts. The fair value measurement of the marketable securities held in the rabbi trust is considered a Level 1 measurement and the measurement of the company-owned life insurance assets is considered a Level 2 measurement within the fair value hierarchy. The Company holds investments in equity securities that are intended to fund a portion of its pension and other postretirement benefit obligations outside of the United States. The investments are valued based on quoted market prices on the last business day of the period. The fair value measurement of the investments is considered a Level 1 measurement within the fair value hierarchy. The fair value of the long-term debt, excluding the derivative liabilities and deferred financing costs, at April 4, 2020 and December 31, 2019 is approximately $574,800 and $632,200, respectively, compared to its carrying value, excluding the derivative liabilities and deferred financing costs, of $567,922 and $515,931, respectively. The Company estimates the fair value of its long-term debt using a combination of quoted market prices for similar financing arrangements and expected future payments discounted at risk-adjusted rates, which are considered Level 2 inputs. At April 4, 2020 and December 31, 2019, the Company’s short-term investments were comprised of time deposits with financial institutions that have maturities that exceed 90 days from the date of acquisition; however they all mature within one year from the respective balance sheet dates. The Company's short-term investments are accounted for as held-to-maturity debt instruments, at amortized cost, which approximates their fair value. The investments are funded with excess cash not expected to be needed for operations prior to maturity; therefore, the Company believes it has the intent and ability to hold the short-term investments until maturity. At each reporting date, the Company performs an evaluation to determine if any unrealized losses are other-than-temporary. No no At April 4, 2020 and December 31, 2019, the Company’s cash and cash equivalents were comprised of demand deposits, time deposits with maturities of three months or less when purchased, and money market funds. The Company estimates the fair value of its cash, cash equivalents, and short-term investments using level 2 inputs. Based on the current interest rates for similar investments with comparable credit risk and time to maturity, the fair value of the Company's cash, cash equivalents, and held-to-maturity short-term investments approximate the carrying amounts reported in the consolidated condensed balance sheets. The Company’s financial instruments also include accounts receivable, short-term notes payable, and accounts payable. The carrying amounts for these financial instruments reported in the consolidated condensed balance sheets approximate their fair values.

Basis of Presentation (Policies

Basis of Presentation (Policies)	3 Months Ended
	Apr. 04, 2020
Basis of Presentation [Abstract]
Fiscal Period, Policy	The Company reports interim financial information for 13-week periods beginning on a Sunday and ending on a Saturday, except for the first fiscal quarter, which always begins on January 1, and the fourth fiscal quarter, which always ends on December 31. The four fiscal quarters in 2020 ended on April 4, 2020, July 4, 2020, October 3, 2020, and December 31, 2020, respectively. The four fiscal quarters in 2019 ended on March 30, 2019, June 29, 2019, September 28, 2019, and December 31, 2019, respectively.
Recently Adopted Accounting Guidance	Recently Adopted Accounting Guidance In June 2016, the Financial Accounting Standards Board ("FASB") issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments Payment terms for the Company's sales are generally less than ninety days. Substantially all of the Company's receivables are collected within twelve months of the transfer of products to the customer and the Company expects this to continue going forward. The credit loss allowance is determined through an analysis of the aging of accounts receivable and assessments of risk that are based on historical trends and an evaluation of the impact of current and projected economic conditions. Receivables from customers with deteriorating financial condition and those over 180 days past due are removed from the pool and evaluated separately. The adoption of ASU 2016-13 on January 1, 2020 had no The Company’s cash equivalents, short-term investments, and restricted investments are accounted for as held-to-maturity debt instruments, at amortized cost. Interest income on these instruments is recorded as “Other income” on the consolidated condensed statements of operations and interest receivable is recognized as a separate asset and recorded in “Prepaid expenses and other current assets” on the consolidated condensed balance sheets. The Company has not experienced a credit loss on the principal or interest receivable of its cash equivalents, short-term investments, or restricted investments. The Company pools its cash equivalents, short-term investments, and restricted investments by credit rating of the issuing financial institution and estimates an allowance for credit losses based on the corporate bond default ratios, evaluation of the impact of current and projected economic conditions, and probability of credit loss. The Company recorded a cumulative-effect adjustment of $810 to January 1, 2020 retained earnings to recognize an allowance for credit losses for these financial instruments upon the adoption of ASU 2016-13. The Company does not measure an allowance for credit losses on interest receivable. Any uncollectible interest receivable will be recognized by reversing interest income within the fiscal quarter that the interest becomes uncollectible. The Company has an immaterial amount of other short-term held-to-maturity debt instruments recorded within “Prepaid expenses and other current assets” on the consolidated condensed balance sheets. The Company analyzes these assets on a separate asset basis and estimates an allowance for credit losses based on historical credit loss rates and an evaluation of the impact of current and projected economic conditions. The Company recorded a cumulative-effect adjustment of $260 to January 1, 2020 retained earnings to recognize an allowance for credit losses for these financial instruments upon the adoption of ASU 2016-13.
Reclassifications	Reclassifications Certain prior period amounts have been reclassified to conform to the current financial statement presentation.

Leases (Policies)

Leases (Policies)	3 Months Ended
	Apr. 04, 2020
Leases [Abstract]
Leases	The Company leases buildings and machinery and equipment used for manufacturing and/or sales and administrative purposes. The Company is also party to various service, warehousing, and other agreements that it evaluates for potential embedded leases. The Company leases assets in each region in which it operates. No individual lease is considered significant and there are no leases that have not yet commenced that are considered significant.

Income Taxes (Policies)

Income Taxes (Policies)	3 Months Ended
	Apr. 04, 2020
Income Taxes [Abstract]
Effective Income Tax Rate Description	The provision for income taxes consists of provisions for federal, state, and foreign income taxes. The effective tax rates for the periods ended April 4, 2020 and March 30, 2019 reflect the Company’s expected tax rate on reported income from continuing operations before income tax and tax adjustments. The Company operates in a global environment with significant operations in various jurisdictions outside the United States. Accordingly, the consolidated income tax rate is a composite rate reflecting the Company’s earnings and the applicable tax rates in the various jurisdictions where the Company operates.

Stock-Based Compensation (Polic

Stock-Based Compensation (Policies)	3 Months Ended
	Apr. 04, 2020
Stock-Based Compensation [Abstract]
Share-based Compensation, Option and Incentive Plans Policy	The amount of compensation cost related to stock-based payment transactions is measured based on the grant-date fair value of the equity instruments issued. The Company determines compensation cost for restricted stock units (“RSUs”) and phantom stock units based on the grant-date fair value of the underlying common stock adjusted for expected dividends paid over the required vesting period for non-participating awards. Compensation cost is recognized over the period that an officer, employee, or non-employee director provides service in exchange for the award.

Segment Information (Policies)

Segment Information (Policies)	3 Months Ended
	Apr. 04, 2020
Segment Information [Abstract]
Segment Reporting, Policy [Policy Text Block]	Vishay is a global manufacturer and supplier of electronic components. Vishay operates, and its chief operating decision maker makes strategic and operating decisions with regards to assessing performance and allocating resources based on, six reporting segments: MOSFETs, Diodes, Optoelectronic Components, Resistors, Inductors, and Capacitors. These segments represent groupings of product lines based on their functionality: ● Metal oxide semiconductor field-effect transistors ("MOSFETs") function as solid-state switches to control power. ● Diodes route, regulate, and block radio frequency, analog, and power signals; protect systems from surges or electrostatic discharge damage; or provide electromagnetic interference filtering. ● Optoelectronic components emit light, detect light, or do both. ● Resistors are basic components used in all forms of electronic circuitry to adjust and regulate levels of voltage and current. ● Inductors use an internal magnetic field to change alternating current phase and resist alternating current. ● Capacitors store energy and discharge it when needed. The current six segment alignment reflects a change in reporting structure made during the fourth fiscal quarter of 2019. The fiscal period ended March 30, 2019 has been recast to separately present Resistors and Inductors. Vishay's reporting segments generate substantially all of their revenue from product sales to the industrial, automotive, telecommunications, computing, consumer products, power supplies, military and aerospace, and medical end markets. A small portion of revenues is from royalties. The Company evaluates business segment performance on operating income, exclusive of certain items (“segment operating income”). Only dedicated, direct selling, general, and administrative expenses of the segments are included in the calculation of segment operating income. The Company’s calculation of segment operating income excludes such selling, general, and administrative costs as global operations, sales and marketing, information systems, finance and administration groups, as well as restructuring and severance costs, the impact of the COVID-19 outbreak, goodwill and long-lived asset impairment charges, and other items. Management believes that evaluating segment performance excluding such items is meaningful because it provides insight with respect to intrinsic operating results of the Company. These items represent reconciling items between segment operating income and consolidated operating income. Business segment assets are the owned or allocated assets used by each business. The Company also regularly evaluates gross profit by segment to assist in the analysis of consolidated gross profit. The Company considers segment operating income to be the more important metric because it more fully captures the business operations of the segments.

Earnings Per Share (Policies)

Earnings Per Share (Policies)	3 Months Ended
	Apr. 04, 2020
Earnings Per Share [Abstract]
Discussion on convertible debt included in computation of earnings per share diluted	The Company’s convertible debt instruments are only convertible for specified periods upon the occurrence of certain events. The Company's convertible debt instruments are not currently convertible. In periods that the convertible debt instruments are not convertible, the certain conditions which could trigger conversion of the debt instruments have been deemed to be non-substantive, and accordingly, the Company assumes the conversion of these instruments in its diluted earnings per share computation during periods in which they are dilutive. At the direction of its Board of Directors, the Company intends, upon conversion, to repay the principal amounts of any of the convertible debt instruments in cash and settle any additional amounts in shares of Vishay common stock. Accordingly, the convertible instruments are included in the diluted earnings per share computation using the “treasury stock method” (similar to options and warrants) rather than the “if converted method” otherwise required for convertible debt. Under the “treasury stock method,” Vishay calculates the number of shares issuable under the terms of the debentures based on the average market price of Vishay common stock during the period, and that number is included in the total diluted shares figure for the period. If the average market price is less than $12.43, no shares are included in the diluted earnings per share computation for the convertible senior debentures due 2040, if the average market price is less than $17.03, no shares are included in the diluted earnings per share computation for the convertible senior debentures due 2041, and if the average market price is less than $31.42, no shares are included in the diluted earnings per share computation for the convertible senior notes due 2025.

Fair Value Measurements (Polici

Fair Value Measurements (Policies)	3 Months Ended
	Apr. 04, 2020
Fair Value Measurements [Abstract]
Fair Value of Financial Instruments, Policy	The fair value measurement accounting guidance establishes a valuation hierarchy of the inputs used to measure fair value. This hierarchy prioritizes the inputs to valuation techniques used to measure fair value into three broad levels. The following is a brief description of those three levels: Level 1: Observable inputs such as quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2: Inputs other than quoted prices that are observable for the asset or liability, either directly or indirectly. These include quoted prices for similar assets or liabilities in active markets and quoted prices for identical or similar assets or liabilities in markets that are not active. Level 3: Unobservable inputs that reflect the Company’s own assumptions. An asset or liability’s classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. There have been no changes in the classification of any financial instruments within the fair value hierarchy in the periods presented.

Leases (Tables)

Leases (Tables)	3 Months Ended
	Apr. 04, 2020
Leases [Abstract]
Right of Use Assets and Lease Liabilities	The net right of use assets and lease liabilities recognized on the consolidated condensed balance sheets for the Company's operating leases were as follows: April 4, 2020 December 31, 2019 Right of use assets Operating Leases Buildings and improvements $ 94,353 $ 87,689 Machinery and equipment 5,153 5,473 Total $ 99,506 $ 93,162 Current lease liabilities Operating Leases Buildings and improvements $ 18,324 $ 17,410 Machinery and equipment 2,709 2,807 Total $ 21,033 $ 20,217 Long-term lease liabilities Operating Leases Buildings and improvements $ 81,036 $ 75,877 Machinery and equipment 2,404 2,634 Total $ 83,440 $ 78,511 Total lease liabilities $ 104,473 $ 98,728
Lease Expense	Lease expense is classified on the statement of operations based on asset use. Total lease cost recognized on the consolidated condensed statements of operations is as follows: Fiscal quarters ended April 4, 2020 March 30, 2019 Lease expense Operating lease expense $ 5,652 $ 5,536 Short-term lease expense 194 833 Variable lease expense 23 12 Total lease expense $ 5,869 $ 6,381
Undiscounted Future Lease Payments for Operating Lease Liabilities	The undiscounted future lease payments for the Company's operating lease liabilities are as follows: April 4, 2020 2020 (excluding the three fiscal months ended April 4, 2020) $ 16,499 2021 19,647 2022 16,044 2023 13,699 2024 12,640 Thereafter 57,162

Restructuring and Related Act_2

Restructuring and Related Activities (Tables)	3 Months Ended
	Apr. 04, 2020
Restructuring and Related Activities [Abstract]
Restructuring and Related Expenses	The following table summarizes the activity to date related to this program: Expense recorded in 2019 $ 24,139 Cash paid (1,330 ) Foreign currency translation 35 Balance at December 31, 2019 $ 22,844 Cash paid (3,742 ) Foreign currency translation (307 ) Balance at April 4, 2020 $ 18,795

Long-Term Debt (Tables)

Long-Term Debt (Tables)	3 Months Ended
	Apr. 04, 2020
Long-Term Debt [Abstract]
Long-term Debt Instruments	Long-term debt consists of the following: April 4, 2020 December 31, 2019 Credit facility $ 54,000 $ - Convertible senior notes, due 2025 512,745 509,128 Convertible senior debentures, due 2040 127 126 Convertible senior debentures, due 2041 1,050 6,677 Deferred financing costs (15,826 ) (16,784 ) 552,096 499,147 Less current portion - - $ 552,096 $ 499,147
Key Facts and Terms of the Convertible Debt Instruments	The following table summarizes some key facts and terms regarding the outstanding convertible debt instruments as of April 4, 2020: Convertible Senior Notes Due 2025 Convertible Senior Debentures Due 2040 Convertible Senior Debentures Due 2041 Issuance date June 12, 2018 November 9, 2010 May 13, 2011 Maturity date June 15, 2025 November 15, 2040 May 15, 2041 Principal amount as of April 4, 2020 $ 600,000 $ 300 $ 2,640 Cash coupon rate (per annum) 2.25 % 2.25 % 2.25 % Nonconvertible debt borrowing rate at issuance (per annum) 5.50 % 8.00 % 8.375 % Conversion rate effective March 11, 2020 (per $1 principal amount) 31.8278 80.4668 58.7205 Effective conversion price effective March 11, 2020 (per share) $ 31.42 $ 12.43 $ 17.03 130% of the conversion price (per share) $ 40.85 $ 16.16 $ 22.14 Call date n/a November 20, 2020 May 20, 2021
Liability and Equity of Component of Convertible Debt Instruments	The carrying values of the liability and equity components of the convertible debt instruments are reflected in the Company’s consolidated condensed balance sheets as follows: Principal amount of the debt instruments Unamortized discount Carrying value of liability component Equity component (including temporary equity) -net carrying value April 4, 2020 Convertible senior notes due 2025 $ 600,000 (87,255 ) $ 512,745 $ 85,262 Convertible senior debentures due 2040 and due 2041 $ 2,940 (1,763 ) $ 1,177 $ 1,216 Total $ 602,940 $ (89,018 ) $ 513,922 $ 86,478 December 31, 2019 Convertible senior notes due 2025 $ 600,000 (90,872 ) $ 509,128 $ 85,262 Convertible senior debentures due 2040 and due 2041 $ 17,190 (10,387 ) $ 6,803 $ 7,129 Total $ 617,190 $ (101,259 ) $ 515,931 $ 92,391
Convertible Debt Instruments, Interest Expense	Interest expense related to the convertible debt instruments is reflected on the consolidated condensed statements of operations for the fiscal quarters ended: Contractual coupon interest Non-cash amortization of debt discount Other non-cash interest expense Total interest expense related to the debt instruments April 4, 2020 Convertible senior notes due 2025 $ 3,375 3,617 454 $ 7,446 Convertible senior debentures $ 44 20 - $ 64 Total $ 3,419 $ 3,637 $ 454 $ 7,510 March 30, 2019 Convertible senior notes due 2025 $ 3,375 3,426 454 $ 7,255 Convertible senior debentures $ 148 64 (16 ) $ 196 Total $ 3,523 $ 3,490 $ 438 $ 7,451

Revenue Recognition (Tables)

Revenue Recognition (Tables)	3 Months Ended
	Apr. 04, 2020
Revenue Recognition [Abstract]
Sales returns and allowances accrual activity	Sales returns and allowances accrual activity is shown below: Fiscal quarters ended April 4, 2020 March 30, 2019 Beginning balance $ 40,508 $ 42,663 Sales allowances 22,632 28,211 Credits issued (27,982 ) (33,062 ) Foreign currency (346 ) (235 ) Ending balance $ 34,812 $ 37,577

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	3 Months Ended
	Apr. 04, 2020
Accumulated Other Comprehensive Income (Loss) [Abstract]
Other Comprehensive Income (Loss) and Income Tax Effects Allocated	The cumulative balance of each component of other comprehensive income (loss) and the income tax effects allocated to each component are as follows: Pension and other post- retirement actuarial items Currency translation adjustment Total Balance at January 1, 2020 $ (68,020 ) $ 41,374 $ (26,646 ) Other comprehensive income before reclassifications - (23,129 ) $ (23,129 ) Tax effect - - $ - Other comprehensive income before reclassifications, net of tax - (23,129 ) $ (23,129 ) Amounts reclassified out of AOCI 2,223 - $ 2,223 Tax effect (622 ) - $ (622 ) Amounts reclassified out of AOCI, net of tax 1,601 - $ 1,601 Net other comprehensive income $ 1,601 $ (23,129 ) $ (21,528 ) Balance at April 4, 2020 $ (66,419 ) $ 18,245 $ (48,174 )

Pensions and Other Postretire_2

Pensions and Other Postretirement Benefits (Tables)	3 Months Ended
	Apr. 04, 2020
Defined Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net Periodic Benefit Cost for Pension and Other Postretirement Benefit Plans	The following table shows the components of the net periodic pension cost for the first fiscal quarters of 2020 and 2019 for the Company’s defined benefit pension plans: Fiscal quarter ended April 4, 2020 Fiscal quarter ended March 30, 2019 U.S. Plans Non-U.S. Plans U.S. Plans Non-U.S. Plans Net service cost $ - $ 1,074 $ - $ 852 Interest cost 342 924 424 1,291 Expected return on plan assets - (495 ) - (490 ) Amortization of prior service cost 36 30 36 51 Amortization of losses 298 1,592 118 1,359 Curtailment and settlement losses - 229 - 505 Net periodic benefit cost $ 676 $ 3,354 $ 578 $ 3,568
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Net Periodic Benefit Cost for Pension and Other Postretirement Benefit Plans	The following table shows the components of the net periodic benefit cost for the first fiscal quarters of 2020 and 2019 for the Company’s other postretirement benefit plans: Fiscal quarter ended April 4, 2020 Fiscal quarter ended March 30, 2019 U.S. Plans Non-U.S. Plans U.S. Plans Non-U.S. Plans Service cost $ 28 $ 69 $ 35 $ 72 Interest cost 59 15 77 30 Amortization of losses (gains) 7 31 (32 ) 27 Net periodic benefit cost $ 94 $ 115 $ 80 $ 129

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	3 Months Ended
	Apr. 04, 2020
Stock-Based Compensation [Abstract]
Summary of Recognized Stock-based Compensation Expense	The following table summarizes stock-based compensation expense recognized: Fiscal quarters ended April 4, 2020 March 30, 2019 Restricted stock units $ 2,783 $ 3,359 Phantom stock units 215 177 Total $ 2,998 $ 3,536
Summary of Unrecognized Compensation Cost and Weighted Average Remaining Amortization Periods	The following table summarizes unrecognized compensation cost and the weighted average remaining amortization periods at April 4, 2020 (amortization periods in years) Unrecognized Compensation Cost Weighted Average Remaining Amortization Periods Restricted stock units $ 5,041 1.0 Phantom stock units - 0.0 Total $ 5,041
RSU Activity	RSU activity under the 2007 Program as of April 4, 2020 and changes during the three fiscal months then ended are presented below (number of RSUs in thousands) Number of RSUs Weighted Average Grant-date Fair Value per Unit Outstanding: January 1, 2020 842 $ 17.93 Granted 272 18.30 Vested* (293 ) 15.52 Cancelled or forfeited - - Outstanding at April 4, 2020 821 $ 18.91 Expected to vest at April 4, 2020 808 * The number of RSUs vested includes shares that the Company withheld on behalf of employees to satisfy the statutory tax withholding requirements .
RSUs with Performance-Based Vesting Criteria	The number of performance-based RSUs that are scheduled to vest increases ratably based on the achievement of defined performance criteria between the established target and maximum levels. RSUs with performance-based vesting criteria are expected to vest as follows (number of RSUs in thousands) Vesting Date Expected to Vest Not Expected to Vest Total January 1, 2021 141 - 141 January 1, 2022 174 - 174 January 1, 2023 152 - 152
Phantom Stock Unit Activity Under the Phantom Stock Plan	Phantom stock unit activity under the phantom stock plan as of April 4, 2020 and changes during the three fiscal months then ended are presented below (number of phantom stock units in thousands) Number of units Grant-date Fair Value per Unit Outstanding: January 1, 2020 183 Granted 10 $ 21.49 Dividend equivalents issued 1 Outstanding at April 4, 2020 194

Segment Information (Tables)

Segment Information (Tables)	3 Months Ended
	Apr. 04, 2020
Segment Information [Abstract]
Segment Reporting Information by Segment	The following tables set forth business segment information: MOSFETs Diodes Optoelectronic Components Resistors Inductors Capacitors Corporate / Other* Total Fiscal quarter ended April 4, 2020 : Net revenues $ 116,893 $ 115,343 $ 54,179 $ 159,208 $ 73,785 $ 93,433 $ - $ 612,841 Gross profit $ 28,152 $ 19,518 $ 14,585 $ 44,773 $ 22,987 $ 20,355 $ (3,130 ) $ 147,240 Segment operating income $ 18,658 $ 14,422 $ 10,686 $ 38,885 $ 20,310 $ 15,070 $ (3,130 ) $ 114,901 Fiscal quarter ended March 30, 2019 : Net revenues $ 137,341 $ 167,840 $ 60,562 $ 188,831 $ 71,640 $ 118,945 $ - $ 745,159 Gross profit $ 36,059 $ 43,492 $ 16,017 $ 62,589 $ 23,280 $ 29,722 $ - $ 211,159 Segment operating income $ 26,678 $ 38,128 $ 11,710 $ 56,347 $ 20,640 $ 24,566 $ - $ 178,069 * Amounts reported in Corporate/Other above represent unallocated costs directly related to the COVID-19 outbreak, which are reported as costs of products sold on the consolidated condensed statement of operations.
Reconciliation of Operating Profit (Loss) from Segments to Consolidated	Fiscal quarters ended April 4, 2020 March 30, 2019 Reconciliation: Segment Operating Income $ 114,901 $ 178,069 Impact of COVID-19 Outbreak on Selling, General, and Administrative Expenses (317 ) - Unallocated Selling, General, and Administrative Expenses (67,176 ) (70,334 ) Consolidated Operating Income $ 47,408 $ 107,735 Unallocated Other Income (Expense) (11,274 ) (7,787 ) Consolidated Income Before Taxes $ 36,134 $ 99,948
Disaggregation of Revenue	The Company has a broad line of products that it sells to OEMs, EMS companies, and independent distributors. The distribution of sales by customer type is shown below: Fiscal quarters ended April 4, 2020 March 30, 2019 Distributors $ 305,446 $ 411,560 OEMs 261,129 282,636 EMS companies 46,266 50,963 Total Revenue $ 612,841 $ 745,159 Net revenues were attributable to customers in the following regions: Fiscal quarters ended April 4, 2020 March 30, 2019 Asia $ 217,084 $ 259,726 Europe 233,052 278,899 Americas 162,705 206,534 Total Revenue $ 612,841 $ 745,159 The Company generates substantially all of its revenue from product sales to end customers in the industrial, automotive, telecommunications, computing, consumer products, power supplies, military and aerospace, and medical end markets. Sales by end market are presented below: Fiscal quarters ended April 4, 2020 March 30, 2019 Industrial $ 215,111 $ 281,590 Automotive 201,943 214,786 Telecommunications 29,692 53,280 Computing 45,223 47,508 Consumer Products 20,553 34,049 Power Supplies 25,194 30,127 Military and Aerospace 43,935 47,561 Medical 31,190 36,258 Total revenue $ 612,841 $ 745,159

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Apr. 04, 2020
Earnings Per Share [Abstract]
Computation of Basic and Diluted Earnings per Share	The following table sets forth the computation of basic and diluted earnings per share attributable to Vishay stockholders (shares in thousands) Fiscal quarters ended April 4, 2020 March 30, 2019 Numerator: Net earnings attributable to Vishay stockholders $ 27,219 $ 75,459 Denominator: Denominator for basic earnings per share: Weighted average shares 144,599 144,375 Outstanding phantom stock units 193 179 Adjusted weighted average shares - basic 144,792 144,554 Effect of dilutive securities: Convertible debt instruments 95 237 Restricted stock units 408 498 Dilutive potential common shares 503 735 Denominator for diluted earnings per share: Adjusted weighted average shares - diluted 145,295 145,289 Basic earnings per share attributable to Vishay stockholders $ 0.19 $ 0.52 Diluted earnings per share attributable to Vishay stockholders $ 0.19 $ 0.52
Weighted Average Potential Common Shares that Would have an Antidilutive Effect or have Unsatisfied Performance Conditions	Diluted earnings per share for the periods presented do not reflect the following weighted average potential common shares that would have an antidilutive effect or have unsatisfied performance conditions (in thousands) Fiscal quarters ended April 4, 2020 March 30, 2019 Convertible debt instruments: Convertible senior notes due 2025 19,088 19,052 Convertible senior debentures due 2041 88 - Weighted average other 325 315

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Apr. 04, 2020
Fair Value Measurements [Abstract]
Fair Value of Assets and Liabilities Carried at Fair Value Measured on Recurring Basis	The following table provides the financial assets and liabilities carried at fair value measured on a recurring basis: Total Fair Value Level 1 Level 2 Level 3 April 4, 2020 Assets: Assets held in rabbi trusts $ 48,137 $ 33,687 $ 14,450 $ - Available for sale securities $ 4,073 4,073 - - $ 52,210 $ 37,760 $ 14,450 $ - December 31, 2019 Assets: Assets held in rabbi trusts $ 52,148 $ 34,280 17,868 $ - Available for sale securities $ 4,405 4,405 - - $ 56,553 $ 38,685 $ 17,868 $ -

Basis of Presentation (Details)

Basis of Presentation (Details) $ in Thousands	Dec. 31, 2019USD ($)
ASU 2016-13 [Member]
Recently Adopted Accounting Guidance [Abstract]
Cumulative effect of accounting change for adoption of ASU	$ (1,070)
Prepaid Expenses and Other Current Assets [Member]
Recently Adopted Accounting Guidance [Abstract]
Cumulative effect of accounting change for adoption of ASU	260
Accounts Receivable [Member]
Recently Adopted Accounting Guidance [Abstract]
Cumulative effect of accounting change for adoption of ASU	0
Cash equivalents, Short-term Investments, and Restricted Cash [Member]
Recently Adopted Accounting Guidance [Abstract]
Cumulative effect of accounting change for adoption of ASU	$ 810

Impact of Coronavirus Outbreak

Impact of Coronavirus Outbreak (Details) $ in Thousands	3 Months Ended
	Apr. 04, 2020USD ($)
Impact of Coronavirus Outbreak [Abstract]
COVID-19 Impact on COGS	$ 3,130
COVID-19 Impact on SGA	$ 317

Leases (Details)

Leases (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 04, 2020	Mar. 30, 2019	Dec. 31, 2019
Assets and Liabilities [Abstract]
Right of use assets	$ 99,506		$ 93,162
Current lease liabilities	21,033		20,217
Long-term lease liabilities	83,440		78,511
Total lease liabilities	104,473		98,728
Lease expense [Abstract]
Operating lease expense	5,652	$ 5,536
Short-term lease expense	194	833
Variable lease expense	23	12
Total lease expense	5,869	6,381
Cash paid for operating leases	$ 5,609	$ 5,050
Weighted-average remaining lease term - operating leases	8 years 9 months 18 days
Weighted-average discount rate - operating leases	5.90%
Undiscounted future lease payments for operating lease liabilities [Abstract]
2020	$ 16,499
2021	19,647
2022	16,044
2023	13,699
2024	12,640
Thereafter	57,162
Building and Improvements [Member]
Assets and Liabilities [Abstract]
Right of use assets	94,353		87,689
Current lease liabilities	18,324		17,410
Long-term lease liabilities	81,036		75,877
Machinery and Equipment [Member]
Assets and Liabilities [Abstract]
Right of use assets	5,153		5,473
Current lease liabilities	2,709		2,807
Long-term lease liabilities	$ 2,404		$ 2,634

Restructuring and Related Act_3

Restructuring and Related Activities (Details) - 2019 Global Cost Reduction and Management Rejuvenation Programs [Member] - USD ($) $ in Thousands	3 Months Ended
	Apr. 04, 2020	Dec. 31, 2019
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, current	$ 15,348
Restructuring reserve, noncurrent	3,447
Restructuring Reserve [Roll Forward]
Restructuring and severance costs		$ 24,139
Cash paid	(3,742)	(1,330)
Foreign currency translation	(307)	35
Balance at end of period	18,795	$ 22,844
Expected restructuring costs	$ 25,000

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 04, 2020	Mar. 30, 2019
Income Taxes [Abstract]
Decrease in liabilities for unrecognized tax benefits	$ (1,264)
Income Tax Uncertainties [Abstract]
Additional expected repatriation	100,000
Remeasurement of Repatriation Deferred Tax Liability [Member]
Effect on Income Tax Expense (Benefit) [Line Items]
Deferred other tax expense (benefit)		$ 585
Remeasurement of Deferred Tax Liability Debt Extinguishment [Member]
Effect on Income Tax Expense (Benefit) [Line Items]
Deferred other tax expense (benefit)	$ 1,346	$ 1,312

Long-Term Debt (Details)

Long-Term Debt (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Apr. 04, 2020USD ($)$ / shares	Mar. 30, 2019USD ($)	Dec. 31, 2019USD ($)
Debt Instruments [Abstract]
Credit facility	$ 54,000		$ 0
Deferred financing costs	(15,826)		(16,784)
Long-term debt	552,096		499,147
Less current portion	0		0
Long-term debt, less current portion	552,096		499,147
Interest expense [Abstract]
Contractual coupon interest	3,419	$ 3,523
Non-cash amortization of debt discount	3,637	3,490
Other Non-cash Interest Expense	454	438
Total interest expense related to the debentures	7,510	7,451
Purchase price of extinguished debt	19,926
Allocated liability component of repurchased debt	9,837
Allocated equity component of repurchased debt	10,089
Loss on extinguishment of debt, including the write-off of portion of unamortized debt issuance costs	(2,920)	(1,307)
Convertible Senior Notes, Due 2025 [Member]
Debt Instruments [Abstract]
Convertible debt	$ 512,745		509,128
Issuance date	Jun. 12, 2018
Debt maturity date	Jun. 15, 2025
Cash coupon rate	2.25%
Nonconvertible debt borrowing rate at issuance	5.50%
Effective conversion rate	31.8278
Effective conversion price (in dollars per share) | $ / shares	$ 31.42
130% of the conversion price (in dollars per share) | $ / shares	$ 40.85
Debt instrument percentage of conversion price	130.00%
Debt instrument percentage of sales price of common stock	98.00%
Maximum threshold of quarterly cash dividends per share of common stock for not adjusting conversion rate of convertible notes | $ / shares	$ 0.085
Liability and equity components of convertible debentures [Abstract]
Principal amount of debt	$ 600,000
Interest expense [Abstract]
Contractual coupon interest	3,375	3,375
Non-cash amortization of debt discount	3,617	3,426
Other Non-cash Interest Expense	454	454
Total interest expense related to the debentures	7,446	7,255
Convertible Senior Debentures, Due 2040 [Member]
Debt Instruments [Abstract]
Convertible debt	$ 127		126
Issuance date	Nov. 9, 2010
Debt maturity date	Nov. 15, 2040
Cash coupon rate	2.25%
Nonconvertible debt borrowing rate at issuance	8.00%
Effective conversion rate	80.4668
Effective conversion price (in dollars per share) | $ / shares	$ 12.43
130% of the conversion price (in dollars per share) | $ / shares	$ 16.16
Convertible senior debentures call date	Nov. 20, 2020
Conversion period before maturity date	3 months
Debt instrument percentage of conversion price	130.00%
Debt instrument percentage of sales price of common stock	98.00%
Liability and equity components of convertible debentures [Abstract]
Principal amount of debt	$ 300
Convertible Senior Debentures, Due 2041 [Member]
Debt Instruments [Abstract]
Convertible debt	$ 1,050		6,677
Issuance date	May 13, 2011
Debt maturity date	May 15, 2041
Cash coupon rate	2.25%
Nonconvertible debt borrowing rate at issuance	8.375%
Effective conversion rate	58.7205
Effective conversion price (in dollars per share) | $ / shares	$ 17.03
130% of the conversion price (in dollars per share) | $ / shares	$ 22.14
Convertible senior debentures call date	May 20, 2021
Conversion period before maturity date	3 months
Debt instrument percentage of conversion price	130.00%
Debt instrument percentage of sales price of common stock	98.00%
Liability and equity components of convertible debentures [Abstract]
Principal amount of debt	$ 2,640
Interest expense [Abstract]
Principal amount of repurchased debt	14,250
Net carrying value of repurchased debt	5,645
Convertible Senior Debentures [Member]
Interest expense [Abstract]
Contractual coupon interest	44	148
Non-cash amortization of debt discount	20	64
Other Non-cash Interest Expense	0	(16)
Total interest expense related to the debentures	64	$ 196
Convertible Debt [Member]
Liability and equity components of convertible debentures [Abstract]
Principal amount of debt	602,940		617,190
Unamortized discount	(89,018)		(101,259)
Carrying value of liability component	513,922		515,931
Equity component - net carrying value	86,478		92,391
Convertible Debt [Member] | Convertible Senior Notes, Due 2025 [Member]
Liability and equity components of convertible debentures [Abstract]
Principal amount of debt	600,000		600,000
Unamortized discount	(87,255)		(90,872)
Carrying value of liability component	512,745		509,128
Equity component - net carrying value	85,262		85,262
Convertible Debt [Member] | Convertible Senior Debentures [Member]
Liability and equity components of convertible debentures [Abstract]
Principal amount of debt	2,940		17,190
Unamortized discount	(1,763)		(10,387)
Carrying value of liability component	1,177		6,803
Equity component - net carrying value	$ 1,216		$ 7,129

Revenue Recognition (Details)

Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 04, 2020	Mar. 30, 2019
Sales returns and allowances accrual activity [Roll Forward]
Beginning balance	$ 40,508	$ 42,663
Sales allowances	22,632	28,211
Credits issued	(27,982)	(33,062)
Foreign currency	(346)	(235)
Ending balance	$ 34,812	$ 37,577

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 04, 2020	Mar. 30, 2019
Cumulative balance of each component of other comprehensive income (loss) and income tax effects [Roll Forward]
Beginning Balance	$ (26,646)
Other comprehensive income before reclassifications	(23,129)
Tax effect	0
Other comprehensive income before reclassifications, net of tax	(23,129)
Amounts reclassified out of AOCI	2,223
Tax effect	(622)
Amounts reclassified out of AOCI, net of tax	1,601
Net other comprehensive income	(21,528)	$ (8,532)
Ending Balance	(48,174)
Pension and Other Post-Retirement Actuarial Items [Member]
Cumulative balance of each component of other comprehensive income (loss) and income tax effects [Roll Forward]
Beginning Balance	(68,020)
Other comprehensive income before reclassifications	0
Tax effect	0
Other comprehensive income before reclassifications, net of tax	0
Amounts reclassified out of AOCI	2,223
Tax effect	(622)
Amounts reclassified out of AOCI, net of tax	1,601
Net other comprehensive income	1,601
Ending Balance	(66,419)
Currency Translation Adjustment [Member]
Cumulative balance of each component of other comprehensive income (loss) and income tax effects [Roll Forward]
Beginning Balance	41,374
Other comprehensive income before reclassifications	(23,129)
Tax effect	0
Other comprehensive income before reclassifications, net of tax	(23,129)
Amounts reclassified out of AOCI	0
Tax effect	0
Amounts reclassified out of AOCI, net of tax	0
Net other comprehensive income	(23,129)
Ending Balance	18,245
Accumulated Other Comprehensive Income (Loss) [Member]
Cumulative balance of each component of other comprehensive income (loss) and income tax effects [Roll Forward]
Beginning Balance	(26,646)
Net other comprehensive income	(21,528)	$ (8,532)
Ending Balance	$ (48,174)

Pensions and Other Postretire_3

Pensions and Other Postretirement Benefits (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 04, 2020	Mar. 30, 2019
Defined Benefit Pension Plans [Member] | U.S. Plans [Member]
Components of net periodic pension cost [Abstract]
Net service cost	$ 0	$ 0
Interest cost	342	424
Expected return on plan assets	0	0
Amortization of prior service cost (credit)	36	36
Amortization of losses (gains)	298	118
Curtailment and settlement losses	0	0
Net periodic benefit cost	676	578
Defined Benefit Pension Plans [Member] | Non-U.S. Plans [Member]
Components of net periodic pension cost [Abstract]
Net service cost	1,074	852
Interest cost	924	1,291
Expected return on plan assets	(495)	(490)
Amortization of prior service cost (credit)	30	51
Amortization of losses (gains)	1,592	1,359
Curtailment and settlement losses	229	505
Net periodic benefit cost	3,354	3,568
Other Postretirement Benefits [Member] | U.S. Plans [Member]
Components of net periodic pension cost [Abstract]
Net service cost	28	35
Interest cost	59	77
Amortization of losses (gains)	7	(32)
Net periodic benefit cost	94	80
Other Postretirement Benefits [Member] | Non-U.S. Plans [Member]
Components of net periodic pension cost [Abstract]
Net service cost	69	72
Interest cost	15	30
Amortization of losses (gains)	31	27
Net periodic benefit cost	$ 115	$ 129

Stock-Based Compensation (Detai

Stock-Based Compensation (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
		Apr. 04, 2020	Mar. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award
Stock-based compensation expense recognized		$ 2,998	$ 3,536
Unrecognized Compensation Cost		$ 5,041
Expiration date of the 2007 stock incentive plan		May 20, 2024
Maximum number of shares granted under restricted stock, unrestricted stock, RSU's and stock options to officers, employees and employee directors (in shares)		6,500,000
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award
Stock-based compensation expense recognized		$ 2,783	3,359
Unrecognized Compensation Cost		$ 5,041
Weighted Average Remaining Amortization Periods		1 year
Number of units [Abstract]
Outstanding (in shares)		842,000
Granted (in shares)		272,000
Vested (in shares)	[1]	(293,000)
Cancelled or forfeited (in shares)		0
Outstanding (in shares)		821,000
Expected to vest (in shares)		808,000
Weighted Average Grant-date Fair Value per Unit [Abstract]
Outstanding (in dollars per share)		$ 17.93
Granted (in dollars per share)		18.30
Vested (in dollars per share)	[1]	15.52
Cancelled or forfeited (in dollars per share)		0
Outstanding (in dollars per share)		$ 18.91
Phantom Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award
Stock-based compensation expense recognized		$ 215	$ 177
Unrecognized Compensation Cost		$ 0
Weighted Average Remaining Amortization Periods		0 years
Number of units [Abstract]
Outstanding (in shares)		183,000
Granted (in shares)		10,000
Dividend equivalents issued (in shares)		1,000
Outstanding (in shares)		194,000
Weighted Average Grant-date Fair Value per Unit [Abstract]
Granted (in dollars per share)		$ 21.49
Scheduled to Vest January 1, 2021 [Member] | Performance Vested Restricted Stock Units [Member]
Number of units [Abstract]
Outstanding (in shares)		141,000
Expected to vest (in shares)		141,000
Not expected to vest (in shares)		0
Scheduled to Vest January 1, 2022 [Member] | Performance Vested Restricted Stock Units [Member]
Number of units [Abstract]
Outstanding (in shares)		174,000
Expected to vest (in shares)		174,000
Not expected to vest (in shares)		0
Scheduled to Vest January 1, 2023 [Member] | Performance Vested Restricted Stock Units [Member]
Number of units [Abstract]
Outstanding (in shares)		152,000
Expected to vest (in shares)		152,000
Not expected to vest (in shares)		0
[1]	The number of RSUs vested includes shares that the Company withheld on behalf of employees to satisfy the statutory tax withholding requirements

Segment Information (Details)

Segment Information (Details) $ in Thousands	3 Months Ended
	Apr. 04, 2020USD ($)Segment	Mar. 30, 2019USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | Segment	6
Net revenues	$ 612,841	$ 745,159
Gross profit	147,240	211,159
Unallocated Selling, General, and Administrative Expenses	(99,832)	(103,424)
Operating income	47,408	107,735
Unallocated Other Income (Expense)	(11,274)	(7,787)
Consolidated Income Before Taxes	36,134	99,948
Distributors [Member]
Segment Reporting Information [Line Items]
Net revenues	305,446	411,560
OEMs [Member]
Segment Reporting Information [Line Items]
Net revenues	261,129	282,636
EMS Companies [Member]
Segment Reporting Information [Line Items]
Net revenues	46,266	50,963
Industrial [Member]
Segment Reporting Information [Line Items]
Net revenues	215,111	281,590
Automotive [Member]
Segment Reporting Information [Line Items]
Net revenues	201,943	214,786
Telecommunications [Member]
Segment Reporting Information [Line Items]
Net revenues	29,692	53,280
Computing [Member]
Segment Reporting Information [Line Items]
Net revenues	45,223	47,508
Consumer Products [Member]
Segment Reporting Information [Line Items]
Net revenues	20,553	34,049
Power Supplies [Member]
Segment Reporting Information [Line Items]
Net revenues	25,194	30,127
Military and Aerospace [Member]
Segment Reporting Information [Line Items]
Net revenues	43,935	47,561
Medical [Member]
Segment Reporting Information [Line Items]
Net revenues	31,190	36,258
Asia [Member]
Segment Reporting Information [Line Items]
Net revenues	217,084	259,726
Europe [Member]
Segment Reporting Information [Line Items]
Net revenues	233,052	278,899
Americas [Member]
Segment Reporting Information [Line Items]
Net revenues	162,705	206,534
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income	114,901	178,069
Operating Segments [Member] | MOSFETS [Member]
Segment Reporting Information [Line Items]
Net revenues	116,893	137,341
Gross profit	28,152	36,059
Operating income	18,658	26,678
Operating Segments [Member] | Diodes [Member]
Segment Reporting Information [Line Items]
Net revenues	115,343	167,840
Gross profit	19,518	43,492
Operating income	14,422	38,128
Operating Segments [Member] | Optoelectronic Components [Member]
Segment Reporting Information [Line Items]
Net revenues	54,179	60,562
Gross profit	14,585	16,017
Operating income	10,686	11,710
Operating Segments [Member] | Resistors [Member]
Segment Reporting Information [Line Items]
Net revenues	159,208	188,831
Gross profit	44,773	62,589
Operating income	38,885	56,347
Operating Segments [Member] | Inductors [Member]
Segment Reporting Information [Line Items]
Net revenues	73,785	71,640
Gross profit	22,987	23,280
Operating income	20,310	20,640
Operating Segments [Member] | Capacitors [Member]
Segment Reporting Information [Line Items]
Net revenues	93,433	118,945
Gross profit	20,355	29,722
Operating income	15,070	24,566
Operating Segments [Member] | Corporate Other [Member]
Segment Reporting Information [Line Items]
Net revenues	0	0
Gross profit	(3,130)	0
Operating income	(3,130)	0
Unallocated Amount to Segment [Member]
Segment Reporting Information [Line Items]
Impact of coronavirus outbreak	(317)	0
Unallocated Selling, General, and Administrative Expenses	(67,176)	(70,334)
Unallocated Other Income (Expense)	$ (11,274)	$ (7,787)

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 04, 2020	Mar. 30, 2019
Numerator [Abstract]
Net earnings attributable to Vishay stockholders	$ 27,219	$ 75,459
Denominator [Abstract]
Weighted average shares (in shares)	144,599	144,375
Outstanding phantom stock units (in shares)	193	179
Adjusted weighted average shares - basic (in shares)	144,792	144,554
Effect of dilutive securities [Abstract]
Convertible and exchangeable debt instruments (in shares)	95	237
Restricted stock units (in shares)	408	498
Dilutive potential common shares (in shares)	503	735
Denominator for diluted earnings per share [Abstract]
Adjusted weighted average shares - diluted (in shares)	145,295	145,289
Basic earnings per share attributable to Vishay stockholders (in dollars per share)	$ 0.19	$ 0.52
Diluted earnings per share attributable to Vishay stockholders (in dollars per share)	$ 0.19	$ 0.52
Convertible Senior Notes, Due 2025 [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Abstract]
Antidilutive securities excluded from computation of earnings per share (in shares)	19,088	19,052
Minimum market price of common stock for inclusion of shares issuable upon conversion of senior debentures for calculation of diluted earnings per share (in dollars per share)	$ 31.42
Convertible Senior Debentures, Due 2040 [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Abstract]
Minimum market price of common stock for inclusion of shares issuable upon conversion of senior debentures for calculation of diluted earnings per share (in dollars per share)	$ 12.43
Convertible Senior Debentures, Due 2041 [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Abstract]
Antidilutive securities excluded from computation of earnings per share (in shares)	88	0
Minimum market price of common stock for inclusion of shares issuable upon conversion of senior debentures for calculation of diluted earnings per share (in dollars per share)	$ 17.03
Weighted Average Other [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Abstract]
Antidilutive securities excluded from computation of earnings per share (in shares)	325	315

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Apr. 04, 2020	Dec. 31, 2019
Assets [Abstract]
Held-to-maturity Securities Transferred	$ 0	$ 0
Held-to-maturity Securities, Unrecognized Holding Gain	0	0
Other than Temporary Impairment Losses, Investments, Held-to-maturity Securities	0	0
Held-to-maturity Securities, Unrecognized Holding Loss	0	0
Liabilities [Abstract]
Long-term debt, fair value	574,800	632,200
Carrying value of long-term debt, excluding derivative liabilities	567,922	515,931
Fair Value, Measurements, Recurring [Member]
Assets [Abstract]
Assets held in rabbi trusts	48,137	52,148
Available for sale securities	4,073	4,405
Fair value assets	52,210	56,553
Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Assets [Abstract]
Assets held in rabbi trusts	33,687	34,280
Available for sale securities	4,073	4,405
Fair value assets	37,760	38,685
Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Assets [Abstract]
Assets held in rabbi trusts	14,450	17,868
Available for sale securities	0	0
Fair value assets	14,450	17,868
Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Assets [Abstract]
Assets held in rabbi trusts	0	0
Available for sale securities	0	0
Fair value assets	$ 0	$ 0