Consolidated Condensed Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 02, 2022	Apr. 03, 2021
Income Statement [Abstract]
Net revenues	$ 87,665	$ 70,589
Costs of products sold	52,415	41,967
Gross profit	35,250	28,622
Selling, general, and administrative expenses	26,674	22,183
Restructuring costs	261	0
Operating income	8,315	6,439
Other income (expense):
Interest expense	(329)	(305)
Other	439	573
Other income	110	268
Income before taxes	8,425	6,707
Income tax expense	1,741	1,764
Net earnings	6,684	4,943
Less: net loss (earnings) attributable to noncontrolling interests	328	(18)
Net earnings attributable to VPG stockholders	$ 6,356	$ 4,961
Basic earnings per share attributable to VPG stockholders (dollars per share)	$ 0.47	$ 0.36
Diluted earnings per share attributable to VPG stockholders (dollars per share)	$ 0.46	$ 0.36
Weighted average shares outstanding - basic (in shares)	13,637	13,593
Weighted average shares outstanding - diluted (in shares)	13,675	13,629