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Summary of Significant Accounting Policies (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Summary of Significant Accounting Policies [Abstract] |  |  |
Minimum ownership of entities that do not have a non-controlling interest (in hundredths) | 100.00% |  |
Royalty revenues | $ 6,362 | $ 7,131 | $ 6,633
Research and development expense | 62,090 | 57,164 | 55,809
Grants recognized as reduction of cost of products sold | 406 | 351 | 483
Deferred grant income | 1,882 | 1,548 |
Number of years maintaining employment levels per grants conditions | 10 years |  |
Minimum number of months until maturity from original purchase date for a highly liquid investment to be considered a short-term investment (in months) | 3 months |  |
Bad debt expense | 62 | (24) | (93)
Property, Plant and Equipment [Line Items] |  |  |
Estimated cost to complete construction in progress | 35,541 |  |
Depreciation expense | 155,064 | 153,801 | 165,022
Finite-Lived Intangible Assets [Line Items] |  |  |
Cash and investments restricted for potential insurance claims | 7,927 | 7,752 |
Outstanding claim accrual | 0 | 0 |
Recently Adopted Accounting Guidance | In February 2013, the FASB issued Accounting Standards Update (“ASU”) No. 2013-02, Comprehensive Income (Topic 220), Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income. The ASU adds new disclosure requirements for items reclassified out of accumulated other comprehensive income. The ASU does not amend any existing requirements for reporting net income or other comprehensive income in the financial statements. The ASU is effective for the Company for interim and annual periods beginning after January 1, 2013. Vishay adopted the ASU on January 1, 2013. The adoption of the ASU had no effect on the Company’s financial position, results of operations, or liquidity. |  |
Goodwill impairment charge | $ 0 | $ 0 | $ 0
Minimum [Member] | Patents and Acquired Technology [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Assets, Useful Life | 7 years |  |
Minimum [Member] | Capitalized Software [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Assets, Useful Life | 3 years |  |
Minimum [Member] | Customer Relationships [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Assets, Useful Life | 5 years |  |
Minimum [Member] | Non-competition Agreements [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Assets, Useful Life | 4 years |  |
Maximum [Member] | Patents and Acquired Technology [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Assets, Useful Life | 25 years |  |
Maximum [Member] | Capitalized Software [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Assets, Useful Life | 10 years |  |
Maximum [Member] | Customer Relationships [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Assets, Useful Life | 20 years |  |
Maximum [Member] | Non-competition Agreements [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Assets, Useful Life | 10 years |  |
Machinery and Equipment [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Useful Life | 7 years |  |
Machinery and Equipment [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Useful Life | 10 years |  |
Building and Building Improvements [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Useful Life | 20 years |  |
Building and Building Improvements [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Useful Life | 40 years |  |

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