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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2017
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, |
|  | 2017 |  |  | 2016 |  |  | 2015 |
Numerator: |  |  |  |  |  |  |  |  |
Numerator for basic earnings (loss) per share: |  |  |  |  |  |  |  |  |
Net earnings (loss) attributable to Vishay stockholders |  | $ | (20,344 | ) |  | $ | 48,792 |  |  | $ | (108,514 | )
Interest savings assuming conversion of dilutive convertible and exchangeable notes, net of tax |  |  | - |  |  |  | 38 |  |  |  | - |
Numerator for diluted earnings (loss) per share: |  |  |  |  |  |  |  |  |  |  |  |
Net earnings (loss) attributed to Vishay stockholders - diluted |  | $ | (20,344 | ) |  | $ | 48,830 |  |  | $ | (108,514 | )
Denominator: |  |  |  |  |  |  |  |  |  |  |  |
Denominator for basic earnings (loss) per share: |  |  |  |  |  |  |  |  |  |  |  |
Weighted average shares |  |  | 145,478 |  |  |  | 147,009 |  |  |  | 147,570 |
Outstanding phantom stock units |  |  | 155 |  |  |  | 143 |  |  |  | 130 |
Adjusted weighted average shares - basic |  |  | 145,633 |  |  |  | 147,152 |  |  |  | 147,700 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |
Convertible and exchangeable debt instruments |  |  | - |  |  |  | 3,219 |  |  |  | - |
Restricted stock units |  |  | - |  |  |  | 323 |  |  |  | - |
Other |  |  | - |  |  |  | 3 |  |  |  | - |
Dilutive potential common shares |  |  | - |  |  |  | 3,545 |  |  |  | - |
Denominator for diluted earnings (loss) per share: |  |  |  |  |  |  |  |  |  |  |  |
Adjusted weighted average shares - diluted |  |  | 145,633 |  |  |  | 150,697 |  |  |  | 147,700 |
Basic earnings (loss) per share attributable to Vishay stockholders |  | $ | (0.14 | ) |  | $ | 0.33 |  |  | $ | (0.73 | )
Diluted earnings (loss) per share attributable to Vishay stockholders |  | $ | (0.14 | ) |  | $ | 0.32 |  |  | $ | (0.73 | )
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share | Note 16 – Earnings Per Share (continued) 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, |
|  | 2017 |  |  | 2016 |  |  | 2015 |
Convertible and exchangeable notes: |  |  |  |  |  |  |  |  |
Convertible Senior Debentures, due 2040 |  |  | 21,184 |  |  |  | 10,312 |  |  |  | 20,477 |
Convertible Senior Debentures, due 2041 |  |  | 8,432 |  |  |  | 8,249 |  |  |  | 8,151 |
Convertible Senior Debentures, due 2042 |  |  | 13,586 |  |  |  | - |  |  |  | 13,133 |
Exchangeable Unsecured Notes, due 2102 |  |  | - |  |  |  | - |  |  |  | 2,512 |
Weighted average employee stock options |  |  | 26 |  |  |  | 91 |  |  |  | 105 |
Weighted average other |  |  | 981 |  |  |  | 512 |  |  |  | 1,014 |

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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 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, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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