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Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 02, 2021	Oct. 03, 2020	Oct. 02, 2021	Oct. 03, 2020
Numerator [Abstract]
Net earnings attributable to Vishay stockholders	$ 96,820	$ 33,484	$ 261,447	$ 85,356
Denominator [Abstract]
Weighted average shares (in shares)	144,808	144,658	144,792	144,636
Outstanding phantom stock units (in shares)	209	196	208	195
Adjusted weighted average shares - basic (in shares)	145,017	144,854	145,000	144,831
Effect of dilutive securities [Abstract]
Convertible and exchangeable debt instruments (in shares)	0	5	3	35
Restricted stock units (in shares)	441	338	452	355
Dilutive potential common shares (in shares)	441	343	455	390
Denominator for diluted earnings per share [Abstract]
Adjusted weighted average shares - diluted (in shares)	145,458	145,197	145,455	145,221
Basic earnings per share attributable to Vishay stockholders (in dollars per share)	$ 0.67	$ 0.23	$ 1.80	$ 0.59
Diluted earnings per share attributable to Vishay stockholders (in dollars per share)	$ 0.67	$ 0.23	$ 1.80	$ 0.59
Convertible Senior Notes, Due 2025 [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Abstract]
Antidilutive securities excluded from computation of earnings per share (in shares)	0	16,009	0	17,806
Convertible Senior Debentures, Due 2041 [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Abstract]
Antidilutive securities excluded from computation of earnings per share (in shares)	0	156	0	133
Weighted Average Other [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Abstract]
Antidilutive securities excluded from computation of earnings per share (in shares)	317	325	317	346

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