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Stockholders' Equity (Details) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 $ / shares shares | Sep. 30, 2017 $ / shares | Jul. 01, 2017 $ / shares | Apr. 01, 2017 $ / shares | Dec. 31, 2016 $ / shares | Oct. 01, 2016 $ / shares | Jul. 02, 2016 $ / shares | Apr. 02, 2016 $ / shares | Dec. 31, 2017 shares $ / shares | Dec. 31, 2016 $ / shares | Dec. 31, 2015 $ / shares
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Cash dividends per share | $ / shares |  |  |  |  |  |  |  |  |  | $ 0.255 | $ 0.250 | $ 0.240
Shares reserved (in shares) |  | 65,836,840 |  |  |  |  |  |  |  | 65,836,840 |  |
Class B Convertible Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Voting rights per share |  |  |  |  |  |  |  |  |  | 10 |  |
Conversion feature |  |  |  |  |  |  |  |  |  | one-for-one |  |
Shares reserved (in shares) | [1] | 12,129,227 |  |  |  |  |  |  |  | 12,129,227 |  |
Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Voting rights per share |  |  |  |  |  |  |  |  |  | 1 |  |
Restricted stock units outstanding [Member] |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Shares reserved (in shares) |  | 986,000 |  |  |  |  |  |  |  | 986,000 |  |
Available to grant 2007 Stock Incentive Program - [Member] |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Shares reserved (in shares) |  | 3,158,000 |  |  |  |  |  |  |  | 3,158,000 |  |
Phantom stock units outstanding [Member] |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Shares reserved (in shares) |  | 157,000 |  |  |  |  |  |  |  | 157,000 |  |
Convertible Senior Debentures, Due 2040 [Member] |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Shares reserved (in shares) |  | 24,185,258 |  |  |  |  |  |  |  | 24,185,258 |  |
Number of shares debentures are convertible into (in shares) |  |  |  |  |  |  |  |  |  | 21,232,338 |  |
Convertible Senior Debentures, Due 2041 [Member] |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Shares reserved (in shares) | [1] | 9,670,490 |  |  |  |  |  |  |  | 9,670,490 |  |
Number of shares debentures are convertible into (in shares) |  |  |  |  |  |  |  |  |  | 8,451,405 |  |
Convertible Senior Debentures 2042 [Member] |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Shares reserved (in shares) | [1] | 15,550,865 |  |  |  |  |  |  |  | 15,550,865 |  |
Number of shares debentures are convertible into (in shares) |  |  |  |  |  |  |  |  |  | 13,616,805 |  |
Dividend Paid [Member] |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Cash dividends per share | $ / shares |  | $ 0.0675 | $ 0.0625 | $ 0.0625 | $ 0.0625 | $ 0.0625 | $ 0.0625 | $ 0.0625 | $ 0.0625 |  |  |
Record date |  | Dec. 07, 2017 | Sep. 15, 2017 | Jun. 15, 2017 | Mar. 14, 2017 | Dec. 08, 2016 | Sep. 15, 2016 | Jun. 15, 2016 | Mar. 11, 2016 |  |  |
Payment date |  | Dec. 21, 2017 | Sep. 28, 2017 | Jun. 29, 2017 | Mar. 29, 2017 | Dec. 22, 2016 | Sep. 29, 2016 | Jun. 29, 2016 | Mar. 29, 2016 |  |  |
[1] | The convertible senior debentures due 2040, due 2041, and due 2042 are convertible into 20,134,043, 8,014,230, and 12,912,435 shares, respectively, of Vishay common stock. The Company has reserved the maximum amount of shares to be delivered upon a make-whole fundamental change as defined in the indentures governing the debentures.

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