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Long-Term Debt (Details) (USD $)	12 Months Ended						12 Months Ended		12 Months Ended			12 Months Ended
Long-Term Debt (Details) (USD $)	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2010 Credit Facility [Member]	Dec. 31, 2009 Credit Facility [Member]	Dec. 31, 2011 Credit Facility [Member]	Dec. 31, 2011 Exchangeable Unsecured Notes, Due 2102 [Member]	Dec. 31, 2010 Exchangeable Unsecured Notes, Due 2102 [Member]	Dec. 31, 2010 Convertible Subordinated Notes, due 2023 [Member]	Dec. 31, 2008 Convertible Subordinated Notes, due 2023 [Member]	Dec. 31, 2009 Convertible Subordinated Notes, due 2023 [Member]	Dec. 31, 2011 Convertible Senior Debentures, Due 2040 [Member]	Dec. 31, 2010 Convertible Senior Debentures, Due 2040 [Member]	Dec. 31, 2011 Convertible Senior Debentures, Due 2041 [Member]	Dec. 31, 2010 Convertible Senior Debentures, Due 2041 [Member]
Debt Instrument [Line Items]
Long-term debt	$ 399,054,000	$ 431,682,000		$ 240,000,000		$ 155,000,000	$ 95,042,000	$ 95,042,000				$ 98,463,000	$ 96,640,000	$ 50,549,000	$ 0
Less current portion	0	0
Long-term debt, less current portion	399,054,000	431,682,000
Credit Facility
Amount outstanding	286,995,000	210,000,000
Maximum borrowing capacity	450,000,000
Expiration date	December 1, 2015
Maximum incremental revolving commitments	100,000,000
Debt repayments	85,000,000
Basis spread on variable rate (in hundredths)	1.65%
Commitment fees (in hundredths)	0.35%
Covenant terms	On September 8, 2011, Vishay entered into an amendment to the Credit Facility. The amendment effectively permits up to $300,000 of additional share repurchases, conditioned upon Vishay maintaining (i) a pro forma leverage ratio of 2.75 to 1.00, (ii) a pro forma interest expense coverage ratio of 2.00 to 1.00, and (iii) $400,000 of available liquidity, as defined in the amendment. The amount and timing of any future stock repurchases remains subject to authorization of Vishay’s Board of Directors. Other significant terms and conditions of the Credit Facility have not changed.
Threshold for judgements which would represent an event of default	On September 8, 2011, Vishay entered into an amendment to the Credit Facility. The amendment effectively permits up to $300,000 of additional share repurchases, conditioned upon Vishay maintaining (i) a pro forma leverage ratio of 2.75 to 1.00, (ii) a pro forma interest expense coverage ratio of 2.00 to 1.00, and (iii) $400,000 of available liquidity, as defined in the amendment. The amount and timing of any future stock repurchases remains subject to authorization of Vishay’s Board of Directors. Other significant terms and conditions of the Credit Facility have not changed.
Letters of credit outstanding	8,005,000
Term loan principal repayments				90,000,000	25,000,000
Committed and uncommitted short-term credit lines	15,500,000	33,300,000
Debt Instruments [Abstract]
Convertible senior debentures issuance date													November 9, 2010	May 13, 2011
Principal amount of debt							105,000,000				500,000,000	275,000,000	275,000,000	150,000,000
Common stock, shares repurchased (in shares)	8,620,689	21,721,959
Liability and equity components of convertible debentures [Abstract]
Principal amount of the debentures							105,000,000				500,000,000	275,000,000	275,000,000	150,000,000
Unamortized discount												(177,131,000)	(178,679,000)	(99,843,000)
Embedded derivative												594,000	319,000	392,000
Carrying value of liability component												98,463,000	96,640,000	50,549,000
Equity component - net carrying value												110,094,000	110,094,000	62,246,000
Stated rate of interest on debt (in hundredths)											3.625%		2.25%	2.25%
Effective rate of interest on convertible senior debentures (in hundredths)												8.00%		8.375%
Interest expense related to debentures [Abstract]
Contractual coupon interest												6,188,000	773,000	2,128,000
Non-cash amortization of debt discount	2,046,000	188,000	0									1,548,000	188,000	498,000
Non-cash amortization of deferred financing costs												88,000	11,000	29,000
Non-cash change in value of derivative liability												275,000	(55,000)	181,000
Total interest expense related to the debentures												8,099,000	917,000	2,836,000
Debt instrument percentage of conversion price (in hundredths)												130.00%		130.00%
Debt instrument, conversion price amount (in dollars per share)							$ 15.39					$ 18.04		$ 24.73
Debt instrument, Percentage of sale price of common stock (in hundredths)												98.00%		98.00%
Debt instrument, initial conversion shares of common stock (shares per $1000 principal)												72.0331		52.5659
Debt instrument, principal amount of debentures												1,000		1,000
Debt instrument, initial conversion price (in dollars per share)												$ 13.88		$ 19.02
Debt instrument, percentage of initial conversion price premium (in hundredths)												12.50%		12.50%
Number of shares of common stock the Notes are exchangeable into (in shares)							6,176,471
Percentage of note holders exercising option to require the company to repurchase their notes (in hundredths)										99.60%
Extinguishment of debt									1,870,000
Israeli bank loan repayment		13,500,000
Aggregate annual maturities of long-term debt [Abstract]
2011	0
2012	0
2013	0
2014	0
2015	155,000,000
Thereafter	520,042,000
Interest paid	$ 14,084,000	$ 9,120,000	$ 10,243,000