Consolidated Condensed Statements of Equity - USD ($) $ in Thousands	Total	Total VPG, Inc. Stockholders' Equity	Common Stock	Class B Convertible Common Stock	Treasury Stock	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interests
Balance, beginning at Dec. 31, 2021	$ 277,042	$ 277,099	$ 1,322	$ 103	$ (8,765)	$ 199,151	$ 120,296	$ (35,008)	$ (57)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	17,564	17,111					17,111		453
Other comprehensive income (loss)	(9,573)	(9,573)						(9,573)
Share-based compensation expense	1,024	1,024				1,024
Restricted stock issuances	(423)	(423)	3			(426)
Distributions to noncontrolling interests	(284)								(284)
Balance, ending at Jul. 02, 2022	285,350	285,238	1,325	103	(8,765)	199,749	137,407	(44,581)	112
Balance, beginning at Apr. 02, 2022	281,843	281,818	1,324	103	(8,765)	199,223	126,652	(36,719)	25
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	10,880	10,755					10,755		125
Other comprehensive income (loss)	(7,862)	(7,862)						(7,862)
Share-based compensation expense	527	527				527
Restricted stock issuances	0	0	1			(1)
Distributions to noncontrolling interests	(38)								(38)
Balance, ending at Jul. 02, 2022	285,350	285,238	1,325	103	(8,765)	199,749	137,407	(44,581)	112
Balance, beginning at Dec. 31, 2022	306,522	306,547	1,325	103	(11,504)	201,164	156,359	(40,900)	(25)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	15,333	15,200					15,200		133
Other comprehensive income (loss)	(176)	(176)						(176)
Share-based compensation expense	1,229	1,229				1,229
Restricted stock issuances	(777)	(777)	5			(782)
Purchase of treasury stock	(420)	(420)			(420)
Distributions to noncontrolling interests	(46)								(46)
Balance, ending at Jul. 01, 2023	321,665	321,603	1,330	103	(11,924)	201,611	171,559	(41,076)	62
Balance, beginning at Apr. 01, 2023	314,893	314,920	1,328	103	(11,504)	201,065	163,323	(39,395)	(27)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	8,351	8,236					8,236		115
Other comprehensive income (loss)	(1,681)	(1,681)						(1,681)
Share-based compensation expense	548	548				548
Restricted stock issuances	0	0	2			(2)
Purchase of treasury stock	(420)	(420)			(420)
Distributions to noncontrolling interests	(26)								(26)
Balance, ending at Jul. 01, 2023	$ 321,665	$ 321,603	$ 1,330	$ 103	$ (11,924)	$ 201,611	$ 171,559	$ (41,076)	$ 62