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	6,684	6,356					6,356		328
Other comprehensive income (loss)	(1,711)	(1,711)						(1,711)
Share-based compensation expense	497	497				497
Restricted stock issuances	(423)	(423)	2			(425)
Distributions to noncontrolling interests	(246)								(246)
Balance, ending at Apr. 02, 2022	281,843	281,818	1,324	103	(8,765)	199,223	126,652	(36,719)	25
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	6,982	6,964					6,964		18
Other comprehensive income (loss)	1,505	1,505						1,505
Share-based compensation expense	681	681				681
Restricted stock issuances	(777)	(777)	3			(780)
Distributions to noncontrolling interests	(20)								(20)
Balance, ending at Apr. 01, 2023	$ 314,893	$ 314,920	$ 1,328	$ 103	$ (11,504)	$ 201,065	$ 163,323	$ (39,395)	$ (27)