Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jul. 04, 2020	Jul. 03, 2021	Jul. 04, 2020
Consolidated Statements of Comprehensive Income [Abstract]
Net earnings	$ 93,381	$ 24,895	$ 165,024	$ 52,279
Other comprehensive income (loss), net of tax
Pension and other post-retirement actuarial items	2,020	1,760	3,884	3,361
Foreign currency translation adjustment	9,285	20,088	(17,664)	(3,041)
Other comprehensive income (loss)	11,305	21,848	(13,780)	320
Comprehensive income	104,686	46,743	151,244	52,599
Less: comprehensive income attributable to noncontrolling interests	189	242	397	407
Comprehensive income attributable to Vishay stockholders	$ 104,497	$ 46,501	$ 150,847	$ 52,192