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Long-Term Debt (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended |  |  | 12 Months Ended |  |  | 12 Months Ended |  |  | 12 Months Ended |  | 12 Months Ended |  | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2010 Credit Facility [Member] | Dec. 31, 2012 Credit Facility [Member] | Dec. 31, 2011 Credit Facility [Member] | Dec. 31, 2012 Exchangeable Unsecured Notes, Due 2102 [Member] | Dec. 31, 2011 Exchangeable Unsecured Notes, Due 2102 [Member] | Jul. 05, 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, 2007 Convertible Subordinated Notes, due 2023 [Member] | Dec. 31, 2012 Convertible Senior Debentures, Due 2040 [Member] | Dec. 31, 2011 Convertible Senior Debentures, Due 2040 [Member] | Dec. 31, 2010 Convertible Senior Debentures, Due 2040 [Member] | Dec. 31, 2012 Convertible Senior Debentures, Due 2041 [Member] | Dec. 31, 2011 Convertible Senior Debentures, Due 2041 [Member] | Dec. 31, 2012 Convertible Senior Debentures 2042 [Member] | Dec. 31, 2011 Convertible Senior Debentures 2042 [Member] | Dec. 31, 2010 Israeli Bank Loan [Member]
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt | $ 392,931 | $ 399,054 |  |  |  |  | $ 89,000 | $ 155,000 | $ 95,042 | $ 95,042 |  |  |  |  | $ 100,166 | $ 98,463 |  | $ 51,399 | $ 50,549 | $ 57,324 | $ 0 |
Less current portion | 0 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt, less current portion | 392,931 | 399,054 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity | 528,000 |  |  |  | 450,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expiration date | Dec. 01, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum incremental revolving commitments | 22,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate description | Borrowings under the Credit Facility bear interest at LIBOR plus an interest margin. The applicable interest margin is based on the Company's leverage ratio. For the year ended December 31, 2011 and through the second fiscal quarter of 2012, borrowings bore interest at LIBOR plus 1.65%. Since the beginning of the third fiscal quarter of 2012 and based on the Company's current leverage ratio, borrowings bear interest at LIBOR plus 1.95%. The interest rate on the Company's borrowings will increase if the Company's leverage ratio equals or exceeds 2.00 to 1 and will decrease if the Company's leverage ratio decreases below 1.50 to 1. Vishay is also required to pay facility commitment fees of 0.35% per annum on the entire commitment amount. Such facility commitment fees will increase if the Company's leverage ratio equals or exceeds 2.50 to 1. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (in hundredths) | 1.95% |  |  | 1.65% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitment fees (in hundredths) | 0.35% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Covenant terms | On September 8, 2011, Vishay entered into an amendment to the Credit Facility that permits the Company to repurchase shares of its common stock up to a permitted capacity, 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. Beginning in 2012, the permitted capacity to repurchase shares of the Company's outstanding common stock under the Credit Facility began to increase each quarter by an amount equal to 20% of net income. At December 31, 2012, the Credit Facility allows the Company to repurchase up to $174,548 of its common stock. The amount and timing of any future stock repurchases remains subject to authorization of the Company's Board of Directors. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Covenant Compliance | The Credit Facility also contains customary events of default, including, but not limited to, failure to pay principal or interest, failure to pay or default under other material debt, misrepresentation or breach of warranty, violation of certain covenants, a change of control, the commencement of bankruptcy proceedings, the insolvency of Vishay or certain of its significant subsidiaries, and the rendering of a judgment in excess of $25,000 against Vishay or certain of its significant subsidiaries. Upon the occurrence of an event of default under the Credit Facility, Vishay's obligations under the credit facility may be accelerated and the lending commitments under the credit facility terminated. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Permitted stock repurchase capacity under credit facility | 174,548 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Available borrowing capacity | 431,295 | 286,995 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Letters of credit outstanding | 7,705 | 8,005 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Committed and uncommitted short-term credit lines | 18,200 | 15,500 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instruments [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible senior debentures issuance date |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Nov. 09, 2010 |  |  | May 13, 2011 |  | May 31, 2012 |  |
Debt maturity date |  |  |  |  |  |  |  |  | Dec. 13, 2102 |  |  |  |  |  | Nov. 15, 2040 |  |  | May 15, 2041 |  | Jun. 01, 2042 |  |
Principal amount of debt | 575,000 | 425,000 |  |  |  |  |  |  |  |  | 105,000 |  |  | 500,000 | 275,000 | 275,000 |  | 150,000 | 150,000 | 150,000 |  |
Stated rate of interest on debt (in hundredths) |  |  |  |  |  |  |  |  |  |  |  | 3.625% |  |  | 2.25% |  |  | 2.25% |  | 2.25% |  |
Effective rate of interest on convertible senior debentures (in hundredths) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8.00% |  |  | 8.375% |  | 7.50% |  |
Debt instrument percentage of conversion price (in hundredths) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 130.00% |  |  | 130.00% |  | 130.00% |  |
Debt Instrument Effective Conversion Price Amount |  |  |  |  |  |  |  |  | $ 15.39 |  |  |  |  |  | $ 13.88 |  |  | $ 19.02 |  | $ 11.81 |  |
Debt instrument, conversion trigger |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 18.04 |  |  | $ 24.73 |  | $ 15.35 |  |
Debt instrument, Percentage of sale price of common stock (in hundredths) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 98.00% |  |  | 98.00% |  | 98.00% |  |
Debt instrument, initial conversion shares of common stock (shares per $1000 principal) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 72.0331 |  |  | 52.5659 |  | 84.6937 |  |
Convertible senior debentures call date |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Nov. 20, 2020 |  |  | May 20, 2021 |  | Jun. 07, 2022 |  |
Liability and equity components of convertible debentures [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount of the debentures | 575,000 | 425,000 |  |  |  |  |  |  |  |  | 105,000 |  |  | 500,000 | 275,000 | 275,000 |  | 150,000 | 150,000 | 150,000 |  |
Unamortized discount | (367,414) | (276,974) |  |  |  |  |  |  |  |  |  |  |  |  | (175,456) | (177,131) |  | (99,000) | (99,843) | (92,958) |  |
Embedded derivative | 1,303 | 986 |  |  |  |  |  |  |  |  |  |  |  |  | 622 | 594 |  | 399 | 392 | 282 |  |
Carrying value of liability component | 208,889 | 149,012 |  |  |  |  |  |  |  |  |  |  |  |  | 100,166 | 98,463 |  | 51,399 | 50,549 | 57,324 |  |
Equity component - net carrying value | 230,214 | 172,340 |  |  |  |  |  |  |  |  |  |  |  |  | 110,094 | 110,094 |  | 62,246 | 62,246 | 57,874 |  |
Interest expense related to debentures [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contractual coupon interest | 11,541 | 8,316 |  |  |  |  |  |  |  |  |  |  |  |  | 6,188 | 6,188 | 773 | 3,375 | 2,128 | 1,978 |  |
Non-cash amortization of debt discount | 3,028 | 2,046 | 188 |  |  |  |  |  |  |  |  |  |  |  | 1,675 | 1,548 | 188 | 843 | 498 | 510 |  |
Non-cash amortization of deferred financing costs | 165 | 117 |  |  |  |  |  |  |  |  |  |  |  |  | 88 | 88 | 11 | 45 | 29 | 32 |  |
Non-cash change in value of derivative liability | 81 | 456 |  |  |  |  |  |  |  |  |  |  |  |  | 28 | 275 | (55) | 7 | 181 | 46 |  |
Total interest expense related to the debentures | 14,815 | 10,935 |  |  |  |  |  |  |  |  |  |  |  |  | 7,979 | 8,099 | 917 | 4,270 | 2,836 | 2,566 |  |
Number of shares of common stock the Notes are exchangeable into (in shares) |  |  |  |  |  |  |  |  | 6,176,471 |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate terms |  |  |  |  |  |  |  |  | The notes bear interest at LIBOR. Interest continues to be payable quarterly on March 31, June 30, September 30, and December 31 of each calendar year. The interest rate could be further reduced to 50% of LIBOR if the price of Vishay's common stock is above $40.73 per share for thirty or more consecutive trading days. |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of note holders exercising option to require the company to repurchase their notes (in hundredths) |  |  |  |  |  |  |  |  |  |  |  |  | 99.60% |  |  |  |  |  |  |  |  |
Extinguishment of debt |  |  |  |  |  |  |  |  |  |  |  | 1,870 |  |  |  |  |  |  |  |  |  |
Debt instrument percentage of conversion price (in hundredths) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 130.00% |  |  | 130.00% |  | 130.00% |  |
Loan repayments |  |  |  |  |  | 90,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 13,500
Aggregate annual maturities of long-term debt [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2013 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2014 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2015 | 89,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2016 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2017 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Thereafter | 670,042 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest paid | $ 16,578 | $ 14,084 | $ 9,120 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 + Details
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- Definition The cash outflow for the payment of other borrowing not otherwise defined in the taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3291-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Committed and uncommitted short-term credit lines with various U.S. and foreign banks held by the Company. + References No definition available. + Details
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- Definition Call date of the debt instrument, in CCYY-MM-DD format. + References No definition available. + Details
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- Definition Date that the debt instrument matures, in CCYY-MM-DD format. + References No definition available. + Details
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- Definition Effective conversion price of the debt instrument. + References No definition available. + Details
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- Definition Minimum sale price of the entity's common stock to enable conversion of the convertible senior debentures. Equals 130% of the effective conversion price. + References No definition available. + Details
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- Definition Percentage of conversion price. + References No definition available. + Details
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- Definition Debt Instrument, Percentage of sale price of common stock + References No definition available. + Details
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- Definition The percentage of note holders exercising option to require the company to repurchase their notes. + References No definition available. + Details
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- Definition The permitted stock repurchase capacity under the terms of the Credit Facility. + References No definition available. + Details
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- Definition The maximum amount of incremental revolving commitments as of the balance sheet date. + References No definition available. + Details
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