Vishay Intertechnology (VSH) 10-Q 3 May 17 2017 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	3 Months Ended
	Apr. 01, 2017	May 01, 2017	Jul. 02, 2016
Entity Information [Line Items]
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q1
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Apr. 1, 2017
Entity Registrant Name	VISHAY INTERTECHNOLOGY INC
Entity Central Index Key	103,730
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float			$ 1,674,000,000
Common Stock [Member]
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		134,047,489
Class B Convertible Common Stock [Member]
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		12,129,227

Consolidated Condensed Balance

Consolidated Condensed Balance Sheets - USD ($) $ in Thousands	Apr. 01, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 499,386	$ 471,781
Short-term investments	638,884	626,627
Accounts receivable, net	310,208	274,027
Inventories:
Finished goods	116,394	109,075
Work in process	170,469	162,311
Raw materials	113,653	109,859
Total inventories	400,516	381,245
Prepaid expenses and other current assets	104,911	110,792
Total current assets	1,953,905	1,864,472
Property and equipment, at cost:
Land	90,151	89,753
Buildings and improvements	572,047	570,932
Machinery and equipment	2,312,403	2,283,222
Construction in progress	57,479	71,777
Allowance for depreciation	(2,196,653)	(2,166,813)
Property, Plant and Equipment, Net, Total	835,427	848,871
Goodwill	141,587	141,407
Other intangible assets, net	80,577	84,463
Other assets	138,252	138,588
Total assets	3,149,748	3,077,801
Current liabilities:
Notes payable to banks	11	3
Trade accounts payable	170,821	174,107
Payroll and related expenses	121,048	114,576
Other accrued expenses	151,377	149,131
Income taxes	11,846	19,033
Total current liabilities	455,103	456,850
Long-term debt less current portion	378,652	357,023
Deferred income taxes	288,511	286,797
Other liabilities	62,275	59,725
Accrued pension and other postretirement costs	257,096	257,789
Total liabilities	1,441,637	1,418,184
Redeemable convertible debentures	88,362	88,659
Vishay stockholders' equity
Common stock	13,405	13,385
Class B convertible common stock	1,213	1,213
Capital in excess of par value	1,953,670	1,952,988
(Accumulated deficit) retained earnings	(279,457)	(307,417)
Accumulated other comprehensive income (loss)	(74,753)	(94,652)
Total Vishay stockholders' equity	1,614,078	1,565,517
Noncontrolling interests	5,671	5,441
Total equity	1,619,749	1,570,958
Total liabilities, temporary equity, and equity	$ 3,149,748	$ 3,077,801

Consolidated Condensed Statemen

Consolidated Condensed Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 01, 2017	Apr. 02, 2016
Consolidated Condensed Statements of Operations [Abstract]
Net revenues	$ 606,258	$ 570,606
Costs of products sold	445,383	433,297
Gross profit	160,875	137,309
Selling, general, and administrative expenses	94,718	90,286
Restructuring and severance costs	1,469	6,475
Operating income	64,688	40,548
Other income (expense):
Interest expense	(6,790)	(6,466)
Other	(396)	779
Gain on early extinguishment of debt	0	3,611
Loss on disposal of equity affiliate	(7,060)	0
Nonoperating Income (Expense), Total	(14,246)	(2,076)
Income before taxes	50,442	38,472
Income tax expense	13,493	10,320
Net earnings	36,949	28,152
Less: net earnings attributable to noncontrolling interests	230	138
Net earnings attributable to Vishay stockholders	$ 36,719	$ 28,014
Basic earnings per share attributable to Vishay stockholders	$ 0.25	$ 0.19
Diluted earnings per share attributable to Vishay stockholders	$ 0.24	$ 0.19
Weighted average shares outstanding - basic	146,274	147,833
Weighted average shares outstanding - diluted	154,876	150,628
Cash dividends per share	$ 0.0625	$ 0.0625

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2017	Apr. 02, 2016
Consolidated Statements of Comprehensive Income [Abstract]
Net earnings	$ 36,949	$ 28,152
Other comprehensive income (loss), net of tax
Pension and postretirement actuarial items	2,335	1,868
Foreign currency translation adjustment	17,293	32,532
Unrealized gain (loss) on available-for-sale securities	271	627
Other comprehensive income (loss)	19,899	35,027
Comprehensive income (loss)	56,848	63,179
Less: comprehensive income attributable to noncontrolling interests	230	138
Comprehensive income (loss) attributable to Vishay stockholders	$ 56,618	$ 63,041

Consolidated Condensed Stateme5

Consolidated Condensed Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2017	Apr. 02, 2016
Operating activities
Net earnings	$ 36,949	$ 28,152
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	40,212	40,017
(Gain) loss on disposal of property and equipment	60	(22)
Accretion of interest on convertible debentures	1,211	1,120
Inventory write-offs for obsolescence	4,834	5,816
Non-cash loss on disposal of equity affiliate	7,060	0
Gain on early extinguishment of debt	0	(3,611)
Other	6,333	(13,508)
Net change in operating assets and liabilities, net of effects of businesses acquired	(52,985)	(37,264)
Net cash provided by operating activities	43,674	20,700
Investing activities
Capital expenditures	(16,668)	(19,756)
Proceeds from sale of property and equipment	943	64
Purchase of short-term investments	(151,886)	(24,588)
Maturity of short-term investments	147,530	117,676
Other investing activities	(5,971)	2,975
Net cash provided by (used in) investing activities	(26,052)	76,371
Financing activities
Principal payments on long-term debt and capital leases	0	(22,595)
Net proceeds (payments) on revolving credit lines	20,000	(12,000)
Net changes in short-term borrowings	8	(719)
Cash withholding taxes paid when shares withheld for vested equity awards	(1,971)	(442)
Other financing activities	(1,255)	0
Net cash provided by (used in) financing activities	7,646	(44,987)
Effect of exchange rate changes on cash and cash equivalents	2,337	3,705
Net increase (decrease) in cash and cash equivalents	27,605	55,789
Cash and cash equivalents at beginning of period	471,781	475,507
Cash and cash equivalents at end of period	499,386	531,296
Common Stock [Member]
Financing activities
Dividends and Interest Paid	(8,378)	(8,473)
Class B Convertible Common Stock [Member]
Financing activities
Dividends and Interest Paid	$ (758)	$ (758)

Consolidated Condensed Stateme6

Consolidated Condensed Statement of Equity - USD ($) $ in Thousands	Common Stock	Class B Convertible Common Stock [Member]	Capital In Excess of Par Value	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Income (Loss)	Total Vishay Stockholders' Equity	Noncontrolling Interest	Total
Cumulative effect of accounting change for adoption of ASU	$ 0	$ 0	$ 0	$ 386	$ 0	$ 386	$ 0	$ 386
Balance at Dec. 31, 2016	13,385	1,213	1,952,988	(307,417)	(94,652)	1,565,517	5,441	1,570,958
Net earnings	0	0	0	36,719	0	36,719	230	36,949
Other comprehensive income (loss)	0	0	0	0	19,899	19,899	0	19,899
Temporary equity reclassification	0	0	297	0	0	297	0	297
Restricted stock issuances	20	0	(1,991)	0	0	(1,971)	0	(1,971)
Dividends declared	0	0	9	(9,145)	0	(9,136)	0	(9,136)
Stock compensation expense	0	0	2,367	0	0	2,367	0	2,367
Balance at Apr. 01, 2017	$ 13,405	$ 1,213	$ 1,953,670	$ (279,457)	$ (74,753)	$ 1,614,078	$ 5,671	$ 1,619,749

Consolidated Condensed Stateme7

Consolidated Condensed Statement of Equity (Parenthetical)	3 Months Ended
	Apr. 01, 2017$ / sharesshares
Consolidated Condensed Statement of Equity [Abstract]
Restricted stock issuances (in shares) | shares	200,688
Common Stock, Dividends, Per Share, Cash Paid | $ / shares	$ 0.0625

Basis of Presentation

Basis of Presentation	3 Months Ended
	Apr. 01, 2017
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, 2016. The results of operations for the fiscal quarter ended April 1, 2017 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 2017 end on April 1, 2017, July 1, 2017, September 30, 2017, and December 31, 2017, respectively. The four fiscal quarters in 2016 ended on April 2, 2016, July 2, 2016, October 1, 2016, and December 31, 2016, respectively. Recently Adopted Accounting Guidance In March 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting Recently Issued Accounting Guidance In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments Reclassifications In addition to the changes due to the retrospective adoption of certain aspects of new accounting guidance described above, certain prior period amounts have been reclassified to conform to the current financial statement presentation.

Restructuring and Related Activ

Restructuring and Related Activities	3 Months Ended
	Apr. 01, 2017
Restructuring and Related Activities [Abstract]
Restructuring and Related Activities	Note 2 – Restructuring and Related Activities The Company places a strong emphasis on controlling its costs and combats general price inflation by continuously improving its efficiency and operating performance. When the ongoing cost containment activities are not adequate, the Company takes actions to maintain its cost competitiveness. The Company incurred significant restructuring costs in its past to reduce its cost structure. Historically, the Company's primary cost reduction technique was through the transfer of production from high-labor-cost countries to lower-labor-cost countries. Since 2013, the Company's cost reduction programs have primarily focused on reducing fixed costs, including selling, general, and administrative expenses. In 2013, the Company announced various cost reduction programs. These programs were substantially implemented by the end of the first fiscal quarter of 2016, with some additional costs incurred in the remainder of 2016. Many of the severance costs were recognized ratably over the required stay periods. In November 2016, the Company announced an extension of one of these programs. In 2015, the Company announced additional global cost reduction programs. These programs include a facility closure in the Netherlands. The cash costs of these programs, primarily severance, are expected to aggregate to approximately $30,000. Complete implementation of these programs is expected to occur before the end of 2017. The following table summarizes restructuring and related expenses which were recognized and reported on a separate line in the accompanying consolidated condensed statements of operations: Fiscal quarters ended April 1, 2017 April 2, 2016 MOSFETs Enhanced Competitiveness Program $ 420 $ 3,915 Global Cost Reduction Programs 1,049 2,560 Total $ 1,469 $ 6,475 MOSFETs Enhanced Competitiveness Program Over a period of approximately 2 years and in a series of discrete steps, the manufacture of wafers for a substantial share of products was transferred into a more cost-efficient fab. As a consequence, certain other manufacturing previously occurring in-house was transferred to third-party foundries. This transfer of production was substantially completed by the end of the first fiscal quarter of 2016. Employees generally were required to remain with the Company during the production transfer period. Accordingly, the Company accrued these severance costs ratably over the respective employees' remaining service periods. The Company has incurred and may continue to incur other exit costs associated with the production transfer, including certain contract termination costs. As a result of a review of the financial results and outlook for the Company's MOSFETs segment following the completion of production transfers, the Company has determined to implement further cost reductions for the MOSFETs segment. In November 2016, the Company announced an extension of the MOSFETs Enhanced Competitiveness Program. The revised program includes various cost reduction initiatives, primarily the transfer of all remaining manufacturing operations at its Santa Clara, California facility to other Vishay facilities or third-party subcontractors. The production transfers will be completed in steps by the end of 2017. The Company expects to incur cash charges of approximately $4,000 to $8,000, primarily related to severance, to implement these steps. The total cash charges for the MOSFETs Enhanced Competitiveness Program are expected to be $24,000 to $27,000. The Company expects to maintain its R&D and management presence in the Silicon Valley area, even after the cessation of manufacturing operations there. The following table summarizes the activity to date related to this program: Expense recorded in 2013 $ 2,328 Cash paid (267 ) Balance at December 31, 2013 $ 2,061 Expense recorded in 2014 6,025 Cash paid (856 ) Balance at December 31, 2014 $ 7,230 Expense recorded in 2015 5,367 Cash paid (426 ) Foreign currency translation 1 Balance at December 31, 2015 $ 12,172 Expense recorded in 2016 9,744 Cash paid (15,686 ) Foreign currency translation 2 Balance at December 31, 2016 $ 6,232 Expense recorded in 2017 420 Cash paid (1,431 ) Foreign currency translations - Balance at April 1, 2017 $ 5,221 Severance benefits are generally paid in a lump sum at cessation of employment. Other exit costs of $64 are included in the expenses incurred in 2017 in the table above. The entire amount of the liability is considered current and is included in other accrued expenses in the accompanying consolidated condensed balance sheets. Voluntary Separation / Retirement Program The voluntary separation / early retirement program was offered to employees worldwide who were eligible because they met job classification, age, and years-of-service criteria as of October 31, 2013. The program benefits varied by country and job classification, but generally included a cash loyalty bonus based on years of service. All employees eligible for the program have left the Company. These employees generally were not aligned with any particular segment. The effective separation / retirement date for most employees who accepted the offer was June 30, 2014 or earlier, with a few exceptions to allow for a transition period. The Company recorded $13,373, of expenses for this program, primarily in 2013 and 2014. Substantially all amounts related to this program have been paid as of April 1, 2017. Global Cost Reduction Programs The global cost reduction programs announced in 2015 include a plan to reduce selling, general, and administrative costs company-wide, and targeted streamlining and consolidation of production for certain product lines within its Capacitors and Resistors & Inductors segments. The following table summarizes the activity to date related to this program: Expense recorded in 2015 $ 13,753 Cash paid (986 ) Foreign currency translation (150 ) Balance at December 31, 2015 $ 12,617 Expense recorded in 2016 9,918 Cash paid (16,237 ) Foreign currency translation (34 ) Balance at December 31, 2016 $ 6,264 Expense recorded in 2017 1,049 Cash paid (3,557 ) Foreign currency translation 64 Balance at April 1, 2017 $ 3,820 The following table summarizes the expense recognized by segment related to this program: Fiscal quarters ended April 1, 2017 April 2, 2016 Diodes $ - $ 448 Optoelectronic Components - 178 Resistors & Inductors 851 1,018 Capacitors 161 334 Unallocated Selling, General, and Administrative Expenses 37 582 Total $ 1,049 $ 2,560 Severance benefits are generally paid in a lump sum at cessation of employment. The current portion of the liability is $3,076 and is included in other accrued expenses in the accompanying consolidated condensed balance sheets. The non-current portion of the liability is included in other liabilities in the accompanying consolidated condensed balance sheets.

Income Taxes

Income Taxes	3 Months Ended
	Apr. 01, 2017
Income Taxes [Abstract]
Income Taxes	Note 3 – 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 1, 2017 and April 2, 2016 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. Income tax expense for the fiscal quarters ended April 1, 2017 and April 2, 2016 includes $968 and $769, respectively, for the periodic remeasurement of the deferred tax liability recorded for the cash repatriation program. The cash repatriation program is expected to occur over several years, and the deferred tax liability is based on the available sources of cash, applicable tax rates, and other factors and circumstances, as of each respective balance sheet date. Changes in the underlying facts and circumstances result in changes in the deferred tax liability balance, which are recorded as tax benefit or expense. During the three fiscal months ended April 1, 2017, the liabilities for unrecognized tax benefits increased by $1,074 on a net basis, due to increases for tax positions taken in the current period, interest, and foreign currency effects.

Long-Term Debt

Long-Term Debt	3 Months Ended
	Apr. 01, 2017
Long-Term Debt [Abstract]
Long-Term Debt	Note 4 – Long-Term Debt Long-term debt consists of the following: April 1, 2017 December 31, 2016 Credit facility $ 163,000 $ 143,000 Convertible senior debentures, due 2040 108,697 108,120 Convertible senior debentures, due 2041 55,752 55,442 Convertible senior debentures, due 2042 61,638 61,341 Deferred financing costs (10,435 ) (10,880 ) 378,652 357,023 Less current portion - - $ 378,652 $ 357,023 Convertible Senior Debentures Vishay currently has three issuances of convertible senior debentures outstanding with generally congruent terms. The quarterly cash dividend program of the Company results in adjustments to the conversion rate and effective conversion price for each issuance of the Company's convertible senior debentures effective as of the ex-dividend date of each cash dividend. The following table summarizes some key facts and terms regarding the three series of outstanding convertible senior debentures following the adjustment made to the conversion rate of the debentures on the ex-dividend date of the March 29, 2017 dividend payment: Due 2040 Due 2041 Due 2042 Issuance date November 9, 2010 May 13, 2011 May 31, 2012 Maturity date November 15, 2040 May 15, 2041 June 1, 2042 Principal amount $ 275,000 $ 150,000 $ 150,000 Cash coupon rate (per annum) 2.25 % 2.25 % 2.25 % Nonconvertible debt borrowing rate at issuance (per annum) 8.00 % 8.375 % 7.50 % Conversion rate effective March 10, 2017 (per $1 principal amount) 76.4157 55.7641 89.8466 Effective conversion price effective March 10, 2017 (per share) $ 13.09 $ 17.93 $ 11.13 130% of the conversion price (per share) $ 17.02 $ 23.31 $ 14.47 Call date November 20, 2020 May 20, 2021 June 7, 2022 Prior to three months before the maturity date, the holders may only convert their debentures 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 debentures due 2042 became convertible subsequent to the December 31, 2016 evaluation of the conversion criteria and remain convertible subsequent to the April 1, 2017 evaluation, due to the sale price of Vishay's common stock exceeding 130% of the conversion price for the applicable periods in the fourth fiscal quarter of 2016 and first fiscal quarter of 2017. The debentures due 2042 will remain convertible until July 1, 2017, at which time the conversion criteria will be reevaluated. At the direction of its Board of Directors, the Company intends, upon future conversion of any of the convertible senior debentures, to repay the principal amounts of the convertible senior debentures in cash and settle any additional amounts in shares of Vishay common stock. The excess of the amount that the Company would pay to the holders of the debentures due 2042 upon conversion over the carrying value of the liability component of the debentures currently convertible has been reclassified as temporary equity on the consolidated condensed financial statements. The Company intends to finance the principal amount of any converted debentures using borrowings under its credit facility. Accordingly, the debt component of the convertible debentures due 2042 continues to be classified as a non-current liability on the consolidated condensed balance sheets. 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 debentures are reflected in the Company's consolidated condensed balance sheets as follows: Principal amount of the debentures Unamortized discount Embedded derivative Carrying value of liability component Equity component (including temporary equity) - net carrying value April 1, 2017 Due 2040 $ 275,000 (166,671 ) 368 $ 108,697 $ 110,094 Due 2041 $ 150,000 (94,535 ) 287 $ 55,752 $ 62,246 Due 2042 $ 150,000 (88,534 ) 172 $ 61,638 $ 57,874 Total $ 575,000 $ (349,740 ) $ 827 $ 226,087 $ 230,214 December 31, 2016 Due 2040 $ 275,000 (167,273 ) 393 $ 108,120 $ 110,094 Due 2041 $ 150,000 (94,843 ) 285 $ 55,442 $ 62,246 Due 2042 $ 150,000 (88,835 ) 176 $ 61,341 $ 57,874 Total $ 575,000 $ (350,951 ) $ 854 $ 224,903 $ 230,214 Interest is payable on the debentures 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 debentures and under certain other circumstances beginning ten years subsequent to issuance. Interest expense related to the debentures is reflected on the consolidated condensed statements of operations for the fiscal quarters ended: Contractual coupon interest Non-cash amortization of debt discount Non-cash amortization of deferred financing costs Non-cash change in value of derivative liability Total interest expense related to the debentures April 1, 2017 Due 2040 $ 1,547 602 22 (25 ) $ 2,146 Due 2041 $ 844 308 12 2 $ 1,166 Due 2042 $ 844 301 13 (4 ) $ 1,154 Total $ 3,235 $ 1,211 $ 47 $ (27 ) $ 4,466 April 2, 2016 Due 2040 $ 1,547 556 22 6 $ 2,131 Due 2041 $ 844 284 11 38 $ 1,177 Due 2042 $ 844 280 13 (17 ) $ 1,120 Total $ 3,235 $ 1,120 $ 46 $ 27 $ 4,428

Other Income (Expense)

Other Income (Expense)	3 Months Ended
	Apr. 01, 2017
Other Income (Expense) [Abstract]
Other Income (Expense)	Note 5 – Other Income (Expense) In March 2017, the Company sold its 50% interest in an investment accounted for using the equity method, and recorded a loss of $7,060. The recorded loss includes Vishay's proportionate share of the investee's accumulated other comprehensive loss of $1,110, recognized upon discontinuation of the equity investment. The loss on disposal is not deductible for income tax purposes. There are certain contingencies pending resolution related to the investee, which may require adjustment to the amount of the recognized loss. The resolution of such additional contingencies is not expected to be material to the financial condition, results of operations, or cash flows of the Company.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	3 Months Ended
	Apr. 01, 2017
Accumulated Other Comprehensive Income (Loss) [Abstract]
Accumulated Other Comprehensive Income (Loss)	Note 6 – 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 Unrealized gain (loss) on available-for-sale securities Total Balance at January 1, 2017 $ (64,496 ) $ (31,266 ) 1,110 $ (94,652 ) Other comprehensive income before reclassifications - 17,293 418 $ 17,711 Tax effect - - (147 ) $ (147 ) Other comprehensive income before reclassifications, net of tax - 17,293 271 $ 17,564 Amounts reclassified out of AOCI 3,299 - - $ 3,299 Tax effect (964 ) - - $ (964 ) Amounts reclassified out of AOCI, net of tax 2,335 - - $ 2,335 Net other comprehensive income $ 2,335 $ 17,293 $ 271 $ 19,899 Balance at April 1, 2017 $ (62,161 ) $ (13,973 ) $ 1,381 $ (74,753 ) Reclassifications of pension and other post-retirement actuarial items out of AOCI are included in the computation of net periodic benefit cost. (See Note 7 for further information). Other comprehensive income (loss) includes Vishay's proportionate share of other comprehensive income (loss) of nonconsolidated subsidiaries accounted for under the equity method.

Pensions and Other Postretireme

Pensions and Other Postretirement Benefits	3 Months Ended
	Apr. 01, 2017
Pensions and Other Postretirement Benefits [Abstract]
Pensions and Other Postretirement Benefits	Note 7 – Pensions and Other Postretirement Benefits The Company maintains various retirement benefit plans. Defined Benefit Pension Plans The following table shows the components of the net periodic pension cost for the first fiscal quarters of 2017 and 2016 for the Company's defined benefit pension plans: Fiscal quarter ended April 1, 2017 Fiscal quarter ended April 2, 2016 U.S. Plans Non-U.S. Plans U.S. Plans Non-U.S. Plans Net service cost $ - $ 903 $ - $ 774 Interest cost 410 1,167 3,000 1,353 Expected return on plan assets - (506 ) (2,825 ) (534 ) Amortization of prior service cost 36 18 36 12 Amortization of losses 82 1,478 1,650 1,171 Curtailment and settlement losses - 322 - 195 Net periodic benefit cost $ 528 $ 3,382 $ 1,861 $ 2,971 Net periodic benefit cost in 2017 was significantly impacted by the termination and settlement of the Company's qualified U.S. pension plan in December 2016. The settlement resulted in the immediate recognition of previously unrecognized actuarial items related to the plan in 2016 that were recorded in accumulated other comprehensive income and were being amortized into net periodic pension cost. The Company contributed $4,409 to the Company's Taiwanese pension plans to improve the funded status of those plans in 2017. Other Postretirement Benefits The following table shows the components of the net periodic benefit cost for the first fiscal quarters of 2017 and 2016 for the Company's other postretirement benefit plans: Fiscal quarter ended April 1, 2017 Fiscal quarter ended April 2, 2016 U.S. Plans Non-U.S. Plans U.S. Plans Non-U.S. Plans Service cost $ 33 $ 64 $ 31 $ 67 Interest cost 77 24 85 36 Amortization of prior service (credit) (209 ) - (209 ) - Amortization of losses (gains) (23 ) 14 (8 ) 17 Net periodic benefit cost $ (122 ) $ 102 $ (101 ) $ 120

Stock-Based Compensation

Stock-Based Compensation	3 Months Ended
	Apr. 01, 2017
Stock-Based Compensation [Abstract]
Stock-Based Compensation	Note 8 – 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 fair value of each option award is estimated on the date of grant using the Black-Scholes option-pricing model. The Company determines compensation cost for restricted stock units ("RSUs"), phantom stock units, and restricted stock 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 1, 2017 April 2, 2016 Restricted stock units $ 2,204 $ 1,084 Phantom stock units 163 117 Stock options - - Total $ 2,367 $ 1,201 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 1, 2017 (amortization periods in years) Unrecognized Compensation Cost Weighted Average Remaining Amortization Periods Restricted stock units $ 4,927 1.7 Phantom stock units - 0.0 Stock options - 0.0 Total $ 4,927 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 1, 2017 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, 2017 1,004 $ 12.74 Granted 304 15.52 Vested* (322 ) 13.54 Cancelled or forfeited - - Outstanding at April 1, 2017 986 $ 13.34 Expected to vest at April 1, 2017 986 * 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, 2018 202 - 202 January 1, 2019 213 - 213 January 1, 2020 167 - 167 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 1, 2017 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, 2017 145 Granted 10 $ 16.25 Dividend equivalents issued 1 Outstanding at April 1, 2017 156 Stock Options In addition to stock options outstanding pursuant to the 2007 Program, during the periods presented, the Company had stock options outstanding under previous stockholder-approved stock option programs. These programs are more fully described in Note 12 to the Company's consolidated financial statements included in its Annual Report on Form 10-K for the year ended December 31, 2016. No additional options may be granted pursuant to these programs. At December 31, 2016 and April 1, 2017, there were 77,000 options outstanding with a weighted average exercise price of $16.29. At April 1, 2017, the weighted average remaining contractual life of all outstanding options was 0.14 years. At April 1, 2017, there were no unvested options outstanding. The pretax aggregate intrinsic value (the difference between the closing stock price on the last trading day of the first fiscal quarter of 2017 of $16.45 per share and the exercise price, multiplied by the number of in-the-money options) that would have been received by the option holder had the option holder exercised his options on April 1, 2017 was $12. This amount changes based on changes in the market value of the Company's common stock. During the three fiscal months ended April 1, 2017, no options were exercised.

Segment Information

Segment Information	3 Months Ended
	Apr. 01, 2017
Segment Information [Abstract]
Segment Information	Note 9 – 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, five 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 and inductors both impede electric current. 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. 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, 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 Total Fiscal quarter ended April 1, 2017: Product Sales $ 105,529 $ 144,895 $ 65,682 $ 200,377 $ 89,769 $ 606,252 Royalty Revenues - - - 6 - $ 6 Total Revenue $ 105,529 $ 144,895 $ 65,682 $ 200,383 $ 89,769 $ 606,258 Gross Profit $ 20,676 $ 37,529 $ 22,301 $ 61,170 $ 19,199 $ 160,875 Segment Operating Income $ 11,761 $ 32,739 $ 16,915 $ 53,897 $ 14,172 $ 129,484 Fiscal quarter ended April 2, 2016: Product Sales $ 100,933 $ 135,384 $ 62,775 $ 183,416 $ 88,020 $ 570,528 Royalty Revenues - - - 78 - $ 78 Total Revenue $ 100,933 $ 135,384 $ 62,775 $ 183,494 $ 88,020 $ 570,606 Gross Profit $ 12,587 $ 32,662 $ 19,181 $ 55,784 $ 17,095 $ 137,309 Segment Operating Income $ 2,618 $ 26,643 $ 13,654 $ 46,883 $ 11,303 $ 101,101 Fiscal quarters ended April 1, 2017 April 2, 2016 Operating income reconciliation: Segment Operating Income $ 129,484 $ 101,101 Restructuring and Severance Costs (1,469 ) (6,475 ) Unallocated Selling, General, and Administrative Expenses (63,327 ) (54,078 ) Consolidated Operating Income 64,688 $ 40,548 Unallocated Other Income (Expense) (14,246 ) (2,076 ) Consolidated Income Before Taxes $ 50,442 38,472

Earnings Per Share

Earnings Per Share	3 Months Ended
	Apr. 01, 2017
Earnings Per Share [Abstract]
Earnings Per Share	Note 10 – 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 1, 2017 April 2, 2016 Numerator: Numerator for basic earnings per share: Net earnings attributable to Vishay stockholders $ 36,719 $ 28,014 Interest savings assuming conversion of dilutive convertible and exchangeable notes, net of tax - 38 Numerator for diluted earnings per share: Net earnings attributable to Vishay stockholders - diluted $ 36,719 $ 28,052 Denominator: Denominator for basic earnings per share: Weighted average shares 146,120 147,691 Outstanding phantom stock units 154 142 Adjusted weighted average shares - basic 146,274 147,833 Effect of dilutive securities: Convertible and exchangeable debt instruments 8,349 2,626 Restricted stock units 253 169 Dilutive potential common shares 8,602 2,795 Denominator for diluted earnings per share: Adjusted weighted average shares - diluted 154,876 150,628 Basic earnings per share attributable to Vishay stockholders $ 0.25 $ 0.19 Diluted earnings per share attributable to Vishay stockholders $ 0.24 $ 0.19 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 1, 2017 April 2, 2016 Convertible and exchangeable notes: Convertible Senior Debentures, due 2040 - 20,574 Convertible Senior Debentures, due 2041 8,340 8,189 Weighted average employee stock options - 105 Weighted average other 581 610 In periods in which they are dilutive, if the potential common shares related to the exchangeable notes are included in the computation, the related interest savings, net of tax, assuming conversion/exchange is added to the net earnings used to compute earnings per share. The Company's convertible debt instruments are only convertible for specified periods upon the occurrence of certain events. The convertible debentures due 2042 became convertible subsequent to the December 31, 2016 evaluation of the conversion criteria and remain convertible subsequent to the April 1, 2017 evaluation. At the direction of its Board of Directors, the Company intends, upon conversion, to repay the principal amounts of the convertible senior debentures, due 2040, due 2041, and due 2042, in cash and settle any additional amounts in shares of Vishay common stock. Accordingly, the debentures 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 $13.09, 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 $17.93, 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 $11.13, no shares are included in the diluted earnings per share computation for the convertible senior debentures due 2042.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Apr. 01, 2017
Fair Value Measurements [Abstract]
Fair Value Measurements	Note 11 – 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 1, 2017 Assets: Assets held in rabbi trusts $ 42,345 $ 27,178 $ 15,167 $ - Available for sale securities $ 4,048 4,048 - - $ 46,393 $ 31,226 $ 15,167 $ - Liabilities: Embedded derivative - convertible debentures due 2040 $ (368 ) $ - $ - $ (368 ) Embedded derivative - convertible debentures due 2041 $ (287 ) - - (287 ) Embedded derivative - convertible debentures due 2042 $ (172 ) - - (172 ) $ (827 ) $ - $ - $ (827 ) December 31, 2016 Assets: Assets held in rabbi trusts $ 41,917 $ 27,297 14,620 $ - Available for sale securities $ 3,969 3,969 - - $ 45,886 $ 31,266 $ 14,620 $ - Liabilities: Embedded derivative - convertible debentures due 2040 $ (393 ) $ - $ - $ (393 ) Embedded derivative - convertible debentures due 2041 $ (285 ) - - (285 ) Embedded derivative - convertible debentures due 2042 $ (176 ) - - (176 ) $ (854 ) $ - $ - $ (854 ) 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 available for sale investments in debt 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 year. The fair value measurement of the investments is considered a Level 1 measurement within the fair value hierarchy. The convertible senior debentures, due 2040, due 2041, and due 2042, issued by the Company on November 9, 2010, May 13, 2011, and May 31, 2012, respectively, contain embedded derivative features that GAAP requires to be bifurcated and remeasured each reporting period. Each quarter, the change in the fair value of the embedded derivative features, if any, is recorded in the consolidated condensed statements of operations. The Company uses a derivative valuation model to derive the value of the embedded derivative features. Key inputs into this valuation model are the Company's current stock price, risk-free interest rates, the stock dividend yield, the stock volatility, and the debentures' credit spread over LIBOR. The first three aforementioned inputs are based on observable market data and are considered Level 2 inputs while the last two aforementioned inputs are unobservable and thus require management's judgment and are considered Level 3 inputs. The fair value measurement is considered a Level 3 measurement within the fair value hierarchy. The Company enters into forward contracts with highly-rated financial institutions to mitigate the foreign currency risk associated with intercompany loans denominated in a currency other than the legal entity's functional currency. The notional amount of the forward contracts was $105,400 and $100,000 as of April 1, 2017 and December 31, 2016, respectively. The forward contracts are short-term in nature and are expected to be renewed at the Company's discretion until the intercompany loans are repaid. We have not designated the forward contracts as hedges for accounting purposes, and as such the change in the fair value of the contracts is recognized in the consolidated condensed statements of operations as a component of other income (expense). The Company estimates the fair value of the forward contracts based on applicable and commonly used pricing models using current market information and is considered a Level 2 measurement within the fair value hierarchy. The value of the forward contracts was immaterial as of April 1, 2017. The Company does not utilize derivatives or other financial instruments for trading or other speculative purposes. The fair value of the long-term debt, excluding the derivative liabilities and deferred financing costs, at April 1, 2017 and December 31, 2016 is approximately $899,000 and $860,600, respectively, compared to its carrying value, excluding the derivative liabilities and deferred financing costs, of $388,260 and $367,049, 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 1, 2017 and December 31, 2016, 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 other-than-temporary impairments have been recognized on these securities, and there are no unrecognized holding gains or losses for these securities during the periods presented. There have been no transfers to or from the held-to-maturity classification. All decreases in the account balance are due to returns of principal at the securities' maturity dates. Interest on the securities is recognized as interest income when earned. At April 1, 2017 and December 31, 2016, 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. 01, 2017
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 2017 end on April 1, 2017, July 1, 2017, September 30, 2017, and December 31, 2017, respectively. The four fiscal quarters in 2016 ended on April 2, 2016, July 2, 2016, October 1, 2016, and December 31, 2016, respectively.
Description of New Accounting Pronouncements Not yet Adopted [Text Block]	Recently Issued Accounting Guidance In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments
New Accounting Pronouncements and Changes in Accounting Principles [Text Block]	Recently Adopted Accounting Guidance In March 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting

Income Taxes (Policies)

Income Taxes (Policies)	3 Months Ended
	Apr. 01, 2017
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 1, 2017 and April 2, 2016 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. 01, 2017
Stock-Based Compensation [Abstract]
Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]	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 fair value of each option award is estimated on the date of grant using the Black-Scholes option-pricing model. The Company determines compensation cost for restricted stock units ("RSUs"), phantom stock units, and restricted stock 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. 01, 2017
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, five 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 and inductors both impede electric current. 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. 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, 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. 01, 2017
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 convertible debentures due 2042 became convertible subsequent to the December 31, 2016 evaluation of the conversion criteria and remain convertible subsequent to the April 1, 2017 evaluation. At the direction of its Board of Directors, the Company intends, upon conversion, to repay the principal amounts of the convertible senior debentures, due 2040, due 2041, and due 2042, in cash and settle any additional amounts in shares of Vishay common stock. Accordingly, the debentures 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 $13.09, 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 $17.93, 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 $11.13, no shares are included in the diluted earnings per share computation for the convertible senior debentures due 2042.

Fair Value Measurements (Polici

Fair Value Measurements (Policies)	3 Months Ended
	Apr. 01, 2017
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.

Restructuring and Related Act25

Restructuring and Related Activities (Tables)	3 Months Ended
	Apr. 01, 2017
Restructuring and Related Activities [Abstract]
Restructuring and Related Expenses	The following table summarizes restructuring and related expenses which were recognized and reported on a separate line in the accompanying consolidated condensed statements of operations: Fiscal quarters ended April 1, 2017 April 2, 2016 MOSFETs Enhanced Competitiveness Program $ 420 $ 3,915 Global Cost Reduction Programs 1,049 2,560 Total $ 1,469 $ 6,475
Global Cost Reduction Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expenses by segment [Table Text Block]	The following table summarizes the expense recognized by segment related to this program: Fiscal quarters ended April 1, 2017 April 2, 2016 Diodes $ - $ 448 Optoelectronic Components - 178 Resistors & Inductors 851 1,018 Capacitors 161 334 Unallocated Selling, General, and Administrative Expenses 37 582 Total $ 1,049 $ 2,560
Schedule of Restructuring Reserve by Type of Cost [Table Text Block]	The following table summarizes the activity to date related to this program: Expense recorded in 2015 $ 13,753 Cash paid (986 ) Foreign currency translation (150 ) Balance at December 31, 2015 $ 12,617 Expense recorded in 2016 9,918 Cash paid (16,237 ) Foreign currency translation (34 ) Balance at December 31, 2016 $ 6,264 Expense recorded in 2017 1,049 Cash paid (3,557 ) Foreign currency translation 64 Balance at April 1, 2017 $ 3,820
MOSFETs Enhanced Competitiveness Program [Member]
Restructuring Cost and Reserve [Line Items]
Schedule of Restructuring Reserve by Type of Cost [Table Text Block]	The following table summarizes the activity to date related to this program: Expense recorded in 2013 $ 2,328 Cash paid (267 ) Balance at December 31, 2013 $ 2,061 Expense recorded in 2014 6,025 Cash paid (856 ) Balance at December 31, 2014 $ 7,230 Expense recorded in 2015 5,367 Cash paid (426 ) Foreign currency translation 1 Balance at December 31, 2015 $ 12,172 Expense recorded in 2016 9,744 Cash paid (15,686 ) Foreign currency translation 2 Balance at December 31, 2016 $ 6,232 Expense recorded in 2017 420 Cash paid (1,431 ) Foreign currency translations - Balance at April 1, 2017 $ 5,221

Long-Term Debt (Tables)

Long-Term Debt (Tables)	3 Months Ended
	Apr. 01, 2017
Long-Term Debt [Abstract]
Schedule of long-term debt instruments	Long-term debt consists of the following: April 1, 2017 December 31, 2016 Credit facility $ 163,000 $ 143,000 Convertible senior debentures, due 2040 108,697 108,120 Convertible senior debentures, due 2041 55,752 55,442 Convertible senior debentures, due 2042 61,638 61,341 Deferred financing costs (10,435 ) (10,880 ) 378,652 357,023 Less current portion - - $ 378,652 $ 357,023
Key terms of the convertible debentures	The following table summarizes some key facts and terms regarding the three series of outstanding convertible senior debentures following the adjustment made to the conversion rate of the debentures on the ex-dividend date of the March 29, 2017 dividend payment: Due 2040 Due 2041 Due 2042 Issuance date November 9, 2010 May 13, 2011 May 31, 2012 Maturity date November 15, 2040 May 15, 2041 June 1, 2042 Principal amount $ 275,000 $ 150,000 $ 150,000 Cash coupon rate (per annum) 2.25 % 2.25 % 2.25 % Nonconvertible debt borrowing rate at issuance (per annum) 8.00 % 8.375 % 7.50 % Conversion rate effective March 10, 2017 (per $1 principal amount) 76.4157 55.7641 89.8466 Effective conversion price effective March 10, 2017 (per share) $ 13.09 $ 17.93 $ 11.13 130% of the conversion price (per share) $ 17.02 $ 23.31 $ 14.47 Call date November 20, 2020 May 20, 2021 June 7, 2022
Liability and equity of component of convertible senior debentures	The carrying values of the liability and equity components of the convertible debentures are reflected in the Company's consolidated condensed balance sheets as follows: Principal amount of the debentures Unamortized discount Embedded derivative Carrying value of liability component Equity component (including temporary equity) - net carrying value April 1, 2017 Due 2040 $ 275,000 (166,671 ) 368 $ 108,697 $ 110,094 Due 2041 $ 150,000 (94,535 ) 287 $ 55,752 $ 62,246 Due 2042 $ 150,000 (88,534 ) 172 $ 61,638 $ 57,874 Total $ 575,000 $ (349,740 ) $ 827 $ 226,087 $ 230,214 December 31, 2016 Due 2040 $ 275,000 (167,273 ) 393 $ 108,120 $ 110,094 Due 2041 $ 150,000 (94,843 ) 285 $ 55,442 $ 62,246 Due 2042 $ 150,000 (88,835 ) 176 $ 61,341 $ 57,874 Total $ 575,000 $ (350,951 ) $ 854 $ 224,903 $ 230,214
Convertible debentures, interest expense	Interest expense related to the debentures is reflected on the consolidated condensed statements of operations for the fiscal quarters ended: Contractual coupon interest Non-cash amortization of debt discount Non-cash amortization of deferred financing costs Non-cash change in value of derivative liability Total interest expense related to the debentures April 1, 2017 Due 2040 $ 1,547 602 22 (25 ) $ 2,146 Due 2041 $ 844 308 12 2 $ 1,166 Due 2042 $ 844 301 13 (4 ) $ 1,154 Total $ 3,235 $ 1,211 $ 47 $ (27 ) $ 4,466 April 2, 2016 Due 2040 $ 1,547 556 22 6 $ 2,131 Due 2041 $ 844 284 11 38 $ 1,177 Due 2042 $ 844 280 13 (17 ) $ 1,120 Total $ 3,235 $ 1,120 $ 46 $ 27 $ 4,428

Accumulated Other Comprehensi27

Accumulated Other Comprehensive Income (Loss) (Tables)	3 Months Ended
	Apr. 01, 2017
Accumulated Other Comprehensive Income (Loss) [Abstract]
Summary of components of other comprehensive income	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 Unrealized gain (loss) on available-for-sale securities Total Balance at January 1, 2017 $ (64,496 ) $ (31,266 ) 1,110 $ (94,652 ) Other comprehensive income before reclassifications - 17,293 418 $ 17,711 Tax effect - - (147 ) $ (147 ) Other comprehensive income before reclassifications, net of tax - 17,293 271 $ 17,564 Amounts reclassified out of AOCI 3,299 - - $ 3,299 Tax effect (964 ) - - $ (964 ) Amounts reclassified out of AOCI, net of tax 2,335 - - $ 2,335 Net other comprehensive income $ 2,335 $ 17,293 $ 271 $ 19,899 Balance at April 1, 2017 $ (62,161 ) $ (13,973 ) $ 1,381 $ (74,753 )

Pensions and Other Postretire28

Pensions and Other Postretirement Benefits (Tables)	3 Months Ended
	Apr. 01, 2017
Pension Plan, Defined Benefit [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 2017 and 2016 for the Company's defined benefit pension plans: Fiscal quarter ended April 1, 2017 Fiscal quarter ended April 2, 2016 U.S. Plans Non-U.S. Plans U.S. Plans Non-U.S. Plans Net service cost $ - $ 903 $ - $ 774 Interest cost 410 1,167 3,000 1,353 Expected return on plan assets - (506 ) (2,825 ) (534 ) Amortization of prior service cost 36 18 36 12 Amortization of losses 82 1,478 1,650 1,171 Curtailment and settlement losses - 322 - 195 Net periodic benefit cost $ 528 $ 3,382 $ 1,861 $ 2,971
Other Postretirement Benefit Plan, Defined Benefit [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 2017 and 2016 for the Company's other postretirement benefit plans: Fiscal quarter ended April 1, 2017 Fiscal quarter ended April 2, 2016 U.S. Plans Non-U.S. Plans U.S. Plans Non-U.S. Plans Service cost $ 33 $ 64 $ 31 $ 67 Interest cost 77 24 85 36 Amortization of prior service (credit) (209 ) - (209 ) - Amortization of losses (gains) (23 ) 14 (8 ) 17 Net periodic benefit cost $ (122 ) $ 102 $ (101 ) $ 120

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	3 Months Ended
	Apr. 01, 2017
Stock-Based Compensation [Abstract]
Summary of recognized stock-based compensation expense	The following table summarizes stock-based compensation expense recognized: Fiscal quarters ended April 1, 2017 April 2, 2016 Restricted stock units $ 2,204 $ 1,084 Phantom stock units 163 117 Stock options - - Total $ 2,367 $ 1,201
Schedule of unrecognized compensation cost, nonvested awards	The following table summarizes unrecognized compensation cost and the weighted average remaining amortization periods at April 1, 2017 (amortization periods in years) Unrecognized Compensation Cost Weighted Average Remaining Amortization Periods Restricted stock units $ 4,927 1.7 Phantom stock units - 0.0 Stock options - 0.0 Total $ 4,927
Schedule of share-based compensation, restricted stock units award activity	RSU activity under the 2007 Program as of April 1, 2017 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, 2017 1,004 $ 12.74 Granted 304 15.52 Vested* (322 ) 13.54 Cancelled or forfeited - - Outstanding at April 1, 2017 986 $ 13.34 Expected to vest at April 1, 2017 986 * The number of RSUs vested includes shares that the Company withheld on behalf of employees to satisfy the statutory tax withholding requirements.
Schedule of share-based compensation arrangement by share-based units, vested and expected to vest	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, 2018 202 - 202 January 1, 2019 213 - 213 January 1, 2020 167 - 167
Schedule of share-based compensation, phantom stock units, Activity	Phantom stock unit activity under the phantom stock plan as of April 1, 2017 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, 2017 145 Granted 10 $ 16.25 Dividend equivalents issued 1 Outstanding at April 1, 2017 156

Segment Information (Tables)

Segment Information (Tables)	3 Months Ended
	Apr. 01, 2017
Segment Information [Abstract]
Schedule of Segment Reporting Information, by Segment	The following tables set forth business segment information: MOSFETs Diodes Optoelectronic Components Resistors & Inductors Capacitors Total Fiscal quarter ended April 1, 2017: Product Sales $ 105,529 $ 144,895 $ 65,682 $ 200,377 $ 89,769 $ 606,252 Royalty Revenues - - - 6 - $ 6 Total Revenue $ 105,529 $ 144,895 $ 65,682 $ 200,383 $ 89,769 $ 606,258 Gross Profit $ 20,676 $ 37,529 $ 22,301 $ 61,170 $ 19,199 $ 160,875 Segment Operating Income $ 11,761 $ 32,739 $ 16,915 $ 53,897 $ 14,172 $ 129,484 Fiscal quarter ended April 2, 2016: Product Sales $ 100,933 $ 135,384 $ 62,775 $ 183,416 $ 88,020 $ 570,528 Royalty Revenues - - - 78 - $ 78 Total Revenue $ 100,933 $ 135,384 $ 62,775 $ 183,494 $ 88,020 $ 570,606 Gross Profit $ 12,587 $ 32,662 $ 19,181 $ 55,784 $ 17,095 $ 137,309 Segment Operating Income $ 2,618 $ 26,643 $ 13,654 $ 46,883 $ 11,303 $ 101,101
Reconciliation of Operating Profit (Loss) from Segments to Consolidated	Fiscal quarters ended April 1, 2017 April 2, 2016 Operating income reconciliation: Segment Operating Income $ 129,484 $ 101,101 Restructuring and Severance Costs (1,469 ) (6,475 ) Unallocated Selling, General, and Administrative Expenses (63,327 ) (54,078 ) Consolidated Operating Income 64,688 $ 40,548 Unallocated Other Income (Expense) (14,246 ) (2,076 ) Consolidated Income Before Taxes $ 50,442 38,472

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Apr. 01, 2017
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	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 1, 2017 April 2, 2016 Numerator: Numerator for basic earnings per share: Net earnings attributable to Vishay stockholders $ 36,719 $ 28,014 Interest savings assuming conversion of dilutive convertible and exchangeable notes, net of tax - 38 Numerator for diluted earnings per share: Net earnings attributable to Vishay stockholders - diluted $ 36,719 $ 28,052 Denominator: Denominator for basic earnings per share: Weighted average shares 146,120 147,691 Outstanding phantom stock units 154 142 Adjusted weighted average shares - basic 146,274 147,833 Effect of dilutive securities: Convertible and exchangeable debt instruments 8,349 2,626 Restricted stock units 253 169 Dilutive potential common shares 8,602 2,795 Denominator for diluted earnings per share: Adjusted weighted average shares - diluted 154,876 150,628 Basic earnings per share attributable to Vishay stockholders $ 0.25 $ 0.19 Diluted earnings per share attributable to Vishay stockholders $ 0.24 $ 0.19
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share	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 1, 2017 April 2, 2016 Convertible and exchangeable notes: Convertible Senior Debentures, due 2040 - 20,574 Convertible Senior Debentures, due 2041 8,340 8,189 Weighted average employee stock options - 105 Weighted average other 581 610

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Apr. 01, 2017
Fair Value Measurements [Abstract]
Schedule of fair Value, Assets and Liabilities 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 1, 2017 Assets: Assets held in rabbi trusts $ 42,345 $ 27,178 $ 15,167 $ - Available for sale securities $ 4,048 4,048 - - $ 46,393 $ 31,226 $ 15,167 $ - Liabilities: Embedded derivative - convertible debentures due 2040 $ (368 ) $ - $ - $ (368 ) Embedded derivative - convertible debentures due 2041 $ (287 ) - - (287 ) Embedded derivative - convertible debentures due 2042 $ (172 ) - - (172 ) $ (827 ) $ - $ - $ (827 ) December 31, 2016 Assets: Assets held in rabbi trusts $ 41,917 $ 27,297 14,620 $ - Available for sale securities $ 3,969 3,969 - - $ 45,886 $ 31,266 $ 14,620 $ - Liabilities: Embedded derivative - convertible debentures due 2040 $ (393 ) $ - $ - $ (393 ) Embedded derivative - convertible debentures due 2041 $ (285 ) - - (285 ) Embedded derivative - convertible debentures due 2042 $ (176 ) - - (176 ) $ (854 ) $ - $ - $ (854 )

Restructuring and Related Act33

Restructuring and Related Activities (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Apr. 01, 2017	Apr. 02, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Restructuring Reserve [Roll Forward]
Restructuring and severance costs	$ 1,469	$ 6,475
MOSFETs Enhanced Competitiveness Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Current	5,221
Restructuring Reserve [Roll Forward]
Restructuring and severance costs	420	3,915	$ 9,744	$ 5,367	$ 6,025	$ 2,328
Cash paid	(1,431)		(15,686)	(426)	(856)	(267)
Foreign currency translation	0		2	1
Balance at end of period	5,221		6,232	12,172	7,230	$ 2,061
Balance at beginning of period	$ 6,232	12,172	12,172	7,230	$ 2,061
Term of restructuring program	2 years
Other Exit Costs	$ 64
MOSFETs Enhanced Competitiveness Program [Member] | Minimum [Member]
Restructuring Reserve [Roll Forward]
Expected Restructuring Costs	24,000
MOSFETs Enhanced Competitiveness Program [Member] | Maximum [Member]
Restructuring Reserve [Roll Forward]
Expected Restructuring Costs	27,000
Voluntary Separation/Retirement Program [Member]
Restructuring Reserve [Roll Forward]
Restructuring cost incurred to date	13,373
Global Cost Reduction Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Current	3,076
Restructuring Reserve [Roll Forward]
Restructuring and severance costs	1,049	2,560	9,918	13,753
Cash paid	(3,557)		(16,237)	(986)
Foreign currency translation	64		(34)	(150)
Balance at end of period	3,820		6,264	$ 12,617
Balance at beginning of period	$ 6,264	12,617	$ 12,617
Term of restructuring program	27 months
Expected Restructuring Costs	$ 30,000
Global Cost Reduction Program [Member] | Diodes Segment [Member]
Restructuring Reserve [Roll Forward]
Restructuring and severance costs	0	448
Global Cost Reduction Program [Member] | Optoelectronic Components Segment [Member]
Restructuring Reserve [Roll Forward]
Restructuring and severance costs	0	178
Global Cost Reduction Program [Member] | Resistors And Inductors Segment [Member]
Restructuring Reserve [Roll Forward]
Restructuring and severance costs	851	1,018
Global Cost Reduction Program [Member] | Capacitors Segment [Member]
Restructuring Reserve [Roll Forward]
Restructuring and severance costs	161	334
Global Cost Reduction Program [Member] | Unallocated Amount to Segment [Member]
Restructuring Reserve [Roll Forward]
Restructuring and severance costs	$ 37	$ 582
MOSFETs Enhanced Competitiveness Program Extension [Member]
Restructuring Reserve [Roll Forward]
Term of restructuring program	15 months
MOSFETs Enhanced Competitiveness Program Extension [Member] | Minimum [Member]
Restructuring Reserve [Roll Forward]
Expected Restructuring Costs	$ 4,000
MOSFETs Enhanced Competitiveness Program Extension [Member] | Maximum [Member]
Restructuring Reserve [Roll Forward]
Expected Restructuring Costs	$ 8,000

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2017	Apr. 02, 2016
Income Taxes [Abstract]
Increase in liabilities for unrecognized tax benefits	$ 1,074
Remeasurement of repatriation deferred tax liability [Member]
Effect on Income Tax Expense (Benefit) [Line Items]
Deferred Other Tax Expense (Benefit)	$ 968	$ 769

Long-Term Debt (Details)

Long-Term Debt (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Apr. 01, 2017USD ($)$ / shares	Apr. 02, 2016USD ($)	Dec. 31, 2016USD ($)
Debt Instrument [Line Items]
Credit facility	$ 163,000		$ 143,000
Deferred Financing Costs	(10,435)		(10,880)
Long-term debt	378,652		357,023
Less current portion	0		0
Long-term debt, less current portion	378,652		357,023
Debt Instruments [Abstract]
Principal amount of debt	$ 575,000		575,000
Debt instrument percentage of conversion price (in hundredths)	130.00%
Debt instrument, Percentage of sale price of common stock (in hundredths)	98.00%
Principal payments on long-term debt and capital leases	$ 0	$ (22,595)
Liability and equity components of convertible debentures [Abstract]
Principal amount of the debentures	575,000		575,000
Unamortized discount	(349,740)		(350,951)
Embedded derivative	827		854
Carrying value of liability component	226,087		224,903
Equity component - net carrying value	230,214		230,214
Interest expense related to debentures [Abstract]
Contractual coupon interest	3,235	3,235
Non-cash amortization of debt discount	1,211	1,120
Non-cash amortization of deferred financing costs	47	46
Non-cash change in value of derivative liability	(27)	27
Total interest expense related to the debentures	4,466	4,428
Convertible Senior Debentures, Due 2040 [Member]
Debt Instrument [Line Items]
Convertible Debt, Noncurrent	$ 108,697		108,120
Debt Instruments [Abstract]
Issuance date	Nov. 9, 2010
Debt maturity date	Nov. 15, 2040
Principal amount of debt	$ 275,000		275,000
Stated rate of interest on debt (in hundredths)	2.25%
Effective rate of interest on convertible senior debentures (in hundredths)	8.00%
Debt conversion rate	76.4157
Debt effective conversion price | $ / shares	$ 13.09
Debt Instrument, Convertible, Stock Price Trigger | $ / shares	$ 17.02
Convertible senior debentures call date	Nov. 20, 2020
Liability and equity components of convertible debentures [Abstract]
Principal amount of the debentures	$ 275,000		275,000
Unamortized discount	(166,671)		(167,273)
Embedded derivative	368		393
Carrying value of liability component	108,697		108,120
Equity component - net carrying value	110,094		110,094
Interest expense related to debentures [Abstract]
Contractual coupon interest	1,547	1,547
Non-cash amortization of debt discount	602	556
Non-cash amortization of deferred financing costs	22	22
Non-cash change in value of derivative liability	(25)	6
Total interest expense related to the debentures	2,146	2,131
Convertible Senior Debentures, Due 2041 [Member]
Debt Instrument [Line Items]
Convertible Debt, Noncurrent	$ 55,752		55,442
Debt Instruments [Abstract]
Issuance date	May 13, 2011
Debt maturity date	May 15, 2041
Principal amount of debt	$ 150,000		150,000
Stated rate of interest on debt (in hundredths)	2.25%
Effective rate of interest on convertible senior debentures (in hundredths)	8.375%
Debt conversion rate	55.7641
Debt effective conversion price | $ / shares	$ 17.93
Debt Instrument, Convertible, Stock Price Trigger | $ / shares	$ 23.31
Convertible senior debentures call date	May 20, 2021
Liability and equity components of convertible debentures [Abstract]
Principal amount of the debentures	$ 150,000		150,000
Unamortized discount	(94,535)		(94,843)
Embedded derivative	287		285
Carrying value of liability component	55,752		55,442
Equity component - net carrying value	62,246		62,246
Interest expense related to debentures [Abstract]
Contractual coupon interest	844	844
Non-cash amortization of debt discount	308	284
Non-cash amortization of deferred financing costs	12	11
Non-cash change in value of derivative liability	2	38
Total interest expense related to the debentures	1,166	1,177
Convertible Senior Debentures, Due 2042 [Member]
Debt Instrument [Line Items]
Convertible Debt, Noncurrent	$ 61,638		61,341
Debt Instruments [Abstract]
Issuance date	May 31, 2012
Debt maturity date	Jun. 1, 2042
Principal amount of debt	$ 150,000		150,000
Stated rate of interest on debt (in hundredths)	2.25%
Effective rate of interest on convertible senior debentures (in hundredths)	7.50%
Debt conversion rate	89.8466
Debt effective conversion price | $ / shares	$ 11.13
Debt Instrument, Convertible, Stock Price Trigger | $ / shares	$ 14.47
Convertible senior debentures call date	Jun. 7, 2022
Liability and equity components of convertible debentures [Abstract]
Principal amount of the debentures	$ 150,000		150,000
Unamortized discount	(88,534)		(88,835)
Embedded derivative	172		176
Carrying value of liability component	61,638		61,341
Equity component - net carrying value	57,874		$ 57,874
Interest expense related to debentures [Abstract]
Contractual coupon interest	844	844
Non-cash amortization of debt discount	301	280
Non-cash amortization of deferred financing costs	13	13
Non-cash change in value of derivative liability	(4)	(17)
Total interest expense related to the debentures	$ 1,154	$ 1,120

Other Income (Expense) (Details

Other Income (Expense) (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2017	Apr. 02, 2016
Schedule of Equity Method Investments [Line Items]
Loss on disposal of equity affiliate	$ 7,060	$ 0
Amounts reclassified out of AOCI, net of tax	2,335
Equity affiliate [Member]
Schedule of Equity Method Investments [Line Items]
Amounts reclassified out of AOCI, net of tax	$ 1,110

Accumulated Other Comprehensi37

Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2017	Apr. 02, 2016
Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	$ (94,652)
Other comprehensive income before reclassifications	17,711
Tax effect	(147)
Other comprehensive income before reclassifications, net of tax	17,564
Amounts reclassified out of AOCI	3,299
Tax effect of reclassification	(964)
Amounts reclassified out of AOCI, net of tax	2,335
Other comprehensive income (loss)	19,899	$ 35,027
Ending Balance	(74,753)
Unrealized Gain (Loss) on Available-for-Sale Securities [Member]
Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	1,110
Other comprehensive income before reclassifications	418
Tax effect	(147)
Other comprehensive income before reclassifications, net of tax	271
Amounts reclassified out of AOCI	0
Tax effect of reclassification	0
Amounts reclassified out of AOCI, net of tax	0
Other comprehensive income (loss)	271
Ending Balance	1,381
Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	(31,266)
Other comprehensive income before reclassifications	17,293
Tax effect	0
Other comprehensive income before reclassifications, net of tax	17,293
Amounts reclassified out of AOCI	0
Tax effect of reclassification	0
Amounts reclassified out of AOCI, net of tax	0
Other comprehensive income (loss)	17,293
Ending Balance	(13,973)
Pension and Other Post-Retirement Actuarial Items [Member]
Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	(64,496)
Other comprehensive income before reclassifications	0
Tax effect	0
Other comprehensive income before reclassifications, net of tax	0
Amounts reclassified out of AOCI	3,299
Tax effect of reclassification	(964)
Amounts reclassified out of AOCI, net of tax	2,335
Other comprehensive income (loss)	2,335
Ending Balance	$ (62,161)

Pensions and Other Postretire38

Pensions and Other Postretirement Benefits (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2017	Apr. 02, 2016
Non-U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net service cost	$ 903	$ 774
Interest cost	1,167	1,353
Expected return on plan assets	(506)	(534)
Amortization of prior service cost (credit)	18	12
Amortization of losses (gains)	1,478	1,171
Curtailments and settlements	322	195
Net periodic benefit cost	3,382	2,971
U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net service cost	0	0
Interest cost	410	3,000
Expected return on plan assets	0	(2,825)
Amortization of prior service cost (credit)	36	36
Amortization of losses (gains)	82	1,650
Curtailments and settlements	0	0
Net periodic benefit cost	528	1,861
U.S. Other Postretirement Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net service cost	33	31
Interest cost	77	85
Amortization of prior service cost (credit)	(209)	(209)
Amortization of losses (gains)	(23)	(8)
Net periodic benefit cost	(122)	(101)
Non-U.S. Other Postretirement Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net service cost	64	67
Interest cost	24	36
Amortization of prior service cost (credit)	0	0
Amortization of losses (gains)	14	17
Net periodic benefit cost	102	$ 120
Republic of China (Taiwan) [Member] | Non-U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Company pension contributions	$ 4,409

Stock-Based Compensation (Detai

Stock-Based Compensation (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
		Apr. 01, 2017	Apr. 02, 2016	Apr. 01, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense recognized		$ 2,367	$ 1,201
Unrecognized Compensation Cost				$ 4,927
Unrecognized compensation cost not expected to be recognized				$ 0
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
Stock Options Outstanding:
Balance		77,000
Exercised (in shares)		0
Balance		77,000
Balance (in dollars per share)		$ 16.29
Weighted average remaining contractual life of options outstanding		1 month 20 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]
Vested and expected to vest (in dollars per share)		$ 16.29		$ 16.29
Share-based compensation arrangement by share-based payment award, options, non-vested, outstanding (in shares)				0
Stock price (in dollars per share)				$ 16.45
Stock options exercised (in shares)		0
Intrinsic value under share based compensation scheme		$ 12
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense recognized		$ 0	0
Unrecognized Compensation Cost				$ 0
Weighted Average Remaining Amortization Periods		0 years
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense recognized		$ 2,204	1,084
Unrecognized Compensation Cost				$ 4,927
Weighted Average Remaining Amortization Periods		1 year 8 months 12 days
Equity Awards Other Than Options Outstanding:
Balance (in shares)		1,004,000
Balance (in dollars per share)		$ 12.74
Granted (in shares)		304,000
Granted (in dollars per share)		$ 15.52
Vested (in shares)	[1]	(322,000)
Vested (in dollars per share)	[1]	$ 13.54
Cancelled or forfeited (in shares)		0
Cancelled or forfeited (in dollars per share)		$ 0
Balance (in shares)		986,000
Balance (in dollars per share)		$ 13.34
Expected to vest (in shares)				986,000
Phantom Share Units (PSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense recognized		$ 163	$ 117
Unrecognized Compensation Cost				$ 0
Weighted Average Remaining Amortization Periods		0 years
Equity Awards Other Than Options Outstanding:
Balance (in shares)		145,000
Granted (in shares)		10,000
Granted (in dollars per share)		$ 16.25
Dividend equivalents issued		1,000
Balance (in shares)		156,000
Scheduled to Vest January 1, 2018 [Member] | Performance Vested Restricted Stock Units [Member]
Equity Awards Other Than Options Outstanding:
Balance (in shares)		202,000
Expected to vest (in shares)				202,000
Not expected to vest (in shares)				0
Scheduled to Vest January 1, 2019 [Member] | Performance Vested Restricted Stock Units [Member]
Equity Awards Other Than Options Outstanding:
Balance (in shares)		213,000
Expected to vest (in shares)				213,000
Not expected to vest (in shares)				0
Scheduled to Vest January 1, 2020 [Member] | Performance Vested Restricted Stock Units [Member]
Equity Awards Other Than Options Outstanding:
Balance (in shares)		167,000
Expected to vest (in shares)				167,000
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. 01, 2017USD ($)Segment	Apr. 02, 2016USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | Segment	5
Product Sales	$ 606,252	$ 570,528
Royalty Revenues	6	78
Total Revenue	606,258	570,606
Gross Margin	160,875	137,309
Segment Operating Income	129,484	101,101
Restructuring and severance Costs	(1,469)	(6,475)
Operating income	64,688	40,548
Unallocated Other Income (Expense)	(14,246)	(2,076)
Income before taxes	50,442	38,472
MOSFETS Segment [Member]
Segment Reporting Information [Line Items]
Product Sales	105,529	100,933
Royalty Revenues	0	0
Total Revenue	105,529	100,933
Gross Margin	20,676	12,587
Segment Operating Income	11,761	2,618
Diodes Segment [Member]
Segment Reporting Information [Line Items]
Product Sales	144,895	135,384
Royalty Revenues	0	0
Total Revenue	144,895	135,384
Gross Margin	37,529	32,662
Segment Operating Income	32,739	26,643
Optoelectronic Components Segment [Member]
Segment Reporting Information [Line Items]
Product Sales	65,682	62,775
Royalty Revenues	0	0
Total Revenue	65,682	62,775
Gross Margin	22,301	19,181
Segment Operating Income	16,915	13,654
Resistors And Inductors Segment [Member]
Segment Reporting Information [Line Items]
Product Sales	200,377	183,416
Royalty Revenues	6	78
Total Revenue	200,383	183,494
Gross Margin	61,170	55,784
Segment Operating Income	53,897	46,883
Capacitors Segment [Member]
Segment Reporting Information [Line Items]
Product Sales	89,769	88,020
Royalty Revenues	0	0
Total Revenue	89,769	88,020
Gross Margin	19,199	17,095
Segment Operating Income	14,172	11,303
Unallocated Amount to Segment [Member]
Segment Reporting Information [Line Items]
Segment Operating Income	(63,327)	(54,078)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Segment Operating Income	129,484	101,101
Unallocated Amount to Segment [Member]
Segment Reporting Information [Line Items]
Restructuring and severance Costs	(1,469)	(6,475)
Unallocated Other Income (Expense)	$ (14,246)	$ (2,076)

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 01, 2017	Apr. 02, 2016
Numerator for basic earnings per share:
Net earnings attributable to Vishay stockholders	$ 36,719	$ 28,014
Adjustment to the numerator for continuing operations and net earnings:
Interest savings assuming conversion of dilutive convertible and exchangeable notes, net of tax	0	38
Numerator for diluted earnings per share:
Net earnings attributable to Vishay stockholders - diluted	$ 36,719	$ 28,052
Denominator for basic earnings per share:
Weighted average shares	146,120	147,691
Outstanding phantom stock units	154	142
Adjusted weighted average shares (basic)	146,274	147,833
Effect of dilutive securities:
Convertible and exchangeable debt instruments	8,349	2,626
Restricted stock units	253	169
Dilutive potential common shares	8,602	2,795
Denominator for diluted earnings per share:
Adjusted weighted average shares (diluted)	154,876	150,628
Basic earnings per share attributable to Vishay stockholders (in dollars per share)	$ 0.25	$ 0.19
Diluted earnings per share attributable to Vishay stockholders (in dollars per share)	$ 0.24	$ 0.19
Convertible Senior Debentures, Due 2040 [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount (in shares)	0	20,574
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)	$ 13.09
Convertible Senior Debentures, Due 2041 [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount (in shares)	8,340	8,189
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)	$ 17.93
Convertible Senior Debentures, Due 2042 [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
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)	$ 11.13
Weighted average employees stock options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount (in shares)	0	105
Weighted average other [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount (in shares)	581	610

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2017	Dec. 31, 2016
Assets:
Held-to-maturity Securities, Transferred Security, at Carrying Value	$ 0
Held-to-maturity Securities, Unrecognized Holding Gain	0
Other than Temporary Impairment Losses, Investments, Held-to-maturity Securities	0
Liabilities:
Embedded derivative	(827)	$ (854)
Long-term Debt, Fair Value	899,000	860,600
Carrying value of long-term debt, excluding derivative liabilities	388,260	367,049
Derivative, Notional Amount	105,400	100,000
Fair Value, Measurements, Recurring [Member]
Assets:
Assets held in rabbi trusts	42,345	41,917
Available for sale securities	4,048	3,969
Fair Value Assets	46,393	45,886
Liabilities:
Fair Value Liabilities	(827)	(854)
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Assets:
Assets held in rabbi trusts	27,178	27,297
Available for sale securities	4,048	3,969
Fair Value Assets	31,226	31,266
Liabilities:
Fair Value Liabilities	0	0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Assets:
Assets held in rabbi trusts	15,167	14,620
Available for sale securities	0	0
Fair Value Assets	15,167	14,620
Liabilities:
Fair Value Liabilities	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Assets:
Assets held in rabbi trusts	0	0
Available for sale securities	0	0
Fair Value Assets	0	0
Liabilities:
Fair Value Liabilities	(827)	(854)
Convertible Senior Debentures, Due 2040 [Member]
Liabilities:
Embedded derivative	(368)	(393)
Convertible Senior Debentures, Due 2040 [Member] | Fair Value, Measurements, Recurring [Member]
Liabilities:
Embedded derivative	(368)	(393)
Convertible Senior Debentures, Due 2040 [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Liabilities:
Embedded derivative	0	0
Convertible Senior Debentures, Due 2040 [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Liabilities:
Embedded derivative	0	0
Convertible Senior Debentures, Due 2040 [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Liabilities:
Embedded derivative	(368)	(393)
Convertible Senior Debentures, Due 2041 [Member]
Liabilities:
Embedded derivative	(287)	(285)
Convertible Senior Debentures, Due 2041 [Member] | Fair Value, Measurements, Recurring [Member]
Liabilities:
Embedded derivative	(287)	(285)
Convertible Senior Debentures, Due 2041 [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Liabilities:
Embedded derivative	0	0
Convertible Senior Debentures, Due 2041 [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Liabilities:
Embedded derivative	0	0
Convertible Senior Debentures, Due 2041 [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Liabilities:
Embedded derivative	(287)	(285)
Convertible Senior Debentures, Due 2042 [Member]
Liabilities:
Embedded derivative	(172)	(176)
Convertible Senior Debentures, Due 2042 [Member] | Fair Value, Measurements, Recurring [Member]
Liabilities:
Embedded derivative	(172)	(176)
Convertible Senior Debentures, Due 2042 [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Liabilities:
Embedded derivative	0	0
Convertible Senior Debentures, Due 2042 [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Liabilities:
Embedded derivative	0	0
Convertible Senior Debentures, Due 2042 [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Liabilities:
Embedded derivative	$ (172)	$ (176)