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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2011
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):
|  | Years ended December 31, |
|  | 2011 |  |  | 2010 |  |  | 2009 |
Numerator: |  |  |  |  |  |  |  |  |
Numerator for basic earnings (loss) per share: |  |  |  |  |  |  |  |  |
Net earnings (loss) |  | $ | 238,821 |  |  | $ | 359,106 |  |  | $ | (57,188 | )
Adjustment to the numerator for continuing operations and net earnings (loss): |  |  |  |  |  |  |  |  |  |  |  |
Interest savings assuming conversion of dilutive convertible and exchangeable notes, net of tax |  |  | 189 |  |  |  | 257 |  |  |  | - |
Numerator for diluted earnings (loss) per share: |  |  |  |  |  |  |  |  |  |  |  |
Net earnings (loss) |  | $ | 239,010 |  |  | $ | 359,363 |  |  | $ | (57,188 | )
Denominator: |  |  |  |  |  |  |  |  |  |  |  |
Denominator for basic earnings (loss) per share: |  |  |  |  |  |  |  |  |  |  |  |
Weighted average shares |  |  | 160,094 |  |  |  | 183,618 |  |  |  | 186,605 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |
Convertible and exchangeable debt instruments |  |  | 7,820 |  |  |  | 6,313 |  |  |  | - |
Employee stock options |  |  | 106 |  |  |  | 10 |  |  |  | - |
Other |  |  | 494 |  |  |  | 286 |  |  |  | - |
Dilutive potential common shares |  |  | 8,420 |  |  |  | 6,609 |  |  |  | - |
Denominator for diluted earnings (loss) per share: |  |  |  |  |  |  |  |  |  |  |  |
Adjusted weighted average shares |  |  | 168,514 |  |  |  | 190,227 |  |  |  | 186,605 |
Basic earnings (loss) per share attributable to Vishay stockholders |  | $ | 1.49 |  |  | $ | 1.96 |  |  | $ | (0.31 | )
Diluted earnings (loss) per share attributable to Vishay stockholders |  | $ | 1.42 |  |  | $ | 1.89 |  |  | $ | (0.31 | )
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share | Diluted earnings per share for the years presented do not reflect the following weighted average potential common shares, as the effect would be antidilutive (in thousands):
|  | Years ended December 31, |
|  | 2011 |  |  | 2010 |  |  | 2009 |
Convertible and exchangeable notes: |  |  |  |  |  |  |  |  |
Convertible Senior Debentures, due 2040 |  |  | 9,905 |  |  |  | - |  |  |  | - |
Convertible Senior Debentures, due 2041 |  |  | 5,026 |  |  |  | - |  |  |  | - |
Convertible Subordinated Notes, due 2023 |  |  | - |  |  |  | 51 |  |  |  | 87 |
Exchangeable Unsecured Notes, due 2102 |  |  | - |  |  |  | - |  |  |  | 6,176 |
Weighted average employee stock options |  |  | 182 |  |  |  | 2,243 |  |  |  | 3,615 |
Weighted average warrants |  |  | 8,824 |  |  |  | 8,824 |  |  |  | 8,824 |
Weighted average other |  |  | 123 |  |  |  | 35 |  |  |  | 294 |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -Subparagraph c -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 -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations. + References No definition available. + Details
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