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Earnings Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended
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Dec. 31, 2012 | Sep. 29, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Oct. 01, 2011 | Jul. 02, 2011 | Apr. 02, 2011 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | 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, 2010 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 Convertible Senior Debentures 2042 [Member] | Dec. 31, 2012 Convertible Subordinated Notes, Due 2023 [Member] | Dec. 31, 2011 Convertible Subordinated Notes, Due 2023 [Member] | Dec. 31, 2010 Convertible Subordinated Notes, Due 2023 [Member] | Dec. 31, 2008 Convertible Subordinated Notes, Due 2023 [Member] | Dec. 31, 2012 Weighted average stock options [Member] | Dec. 31, 2011 Weighted average stock options [Member] | Dec. 31, 2010 Weighted average stock options [Member] | Dec. 31, 2012 Weighted average warrants [Member] | Dec. 31, 2011 Weighted average warrants [Member] | Dec. 31, 2010 Weighted average warrants [Member] | Dec. 31, 2012 Weighted average other [Member] | Dec. 31, 2011 Weighted average other [Member] | Dec. 31, 2010 Weighted average other [Member]
Numerator for basic earnings (loss) per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net earnings attributable to Vishay stockholders | $ 20,975 | $ 22,280 | $ 45,671 | $ 33,812 | $ 30,952 | $ 50,487 | $ 82,095 | $ 75,287 | $ 122,738 | $ 238,821 | $ 359,106 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Adjustment to the numerator for continuing operations and net earnings (loss): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest savings assuming conversion of dilutive convertible and exchangeable notes, net of tax |  |  |  |  |  |  |  |  | 293 | 189 | 257 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Numerator for diluted earnings (loss) per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net earnings (loss) |  |  |  |  |  |  |  |  | 123,031 | 239,010 | 359,363 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Denominator for basic earnings (loss) per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average shares outstanding - basic |  |  |  |  |  |  |  |  | 149,020 | 160,094 | 183,618 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible and exchangeable debt instruments (in shares) |  |  |  |  |  |  |  |  | 6,176 | 7,820 | 6,313 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted stock units |  |  |  |  |  |  |  |  | 549 | 212 | 133 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other (in shares) |  |  |  |  |  |  |  |  | 99 | 388 | 163 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dilutive potential common shares (in shares) |  |  |  |  |  |  |  |  | 6,824 | 8,420 | 6,609 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Adjusted weighted average shares (in shares) |  |  |  |  |  |  |  |  | 155,844 | 168,514 | 190,227 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic earnings per share attributable to Vishay stockholders (in dollars per share) | $ 0.15 | $ 0.16 | $ 0.30 | $ 0.22 | $ 0.20 | $ 0.32 | $ 0.51 | $ 0.46 | $ 0.82 | $ 1.49 | $ 1.96 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Diluted earnings per share attributable to Vishay stockholders (in dollars per share) | $ 0.14 | $ 0.15 | $ 0.29 | $ 0.21 | $ 0.19 | $ 0.31 | $ 0.48 | $ 0.43 | $ 0.79 | $ 1.42 | $ 1.89 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount (in shares) |  |  |  |  |  |  |  |  |  |  |  | 19,809 | 9,905 | 0 | 7,885 | 5,026 | 0 | 7,434 | 0 | 0 | 0 | 0 | 51 |  | 177 | 182 | 2,243 | 8,390 | 8,824 | 8,824 | 282 | 123 | 35
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) |  |  |  |  |  |  |  |  |  |  |  | $ 13.88 |  |  | $ 19.02 |  |  | $ 11.81 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage Of Outstanding Convertible Subordinated Notes Repurchased To Option Of Holders |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 99.60% |  |  |  |  |  |  |  |  |
Extinguishment of debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,870 |  |  |  |  |  |  |  |  |  |

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