Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock [Member]	Capital in Excess of Par Value [Member]	Accumulated Loss [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock [Member]	Noncontrolling Interest [Member]
Beginning Balance at Dec. 31, 2020	$ 203,611	$ 355	$ 255,296	$ (38,141)	$ (14,496)	$ (356)	$ 953
Beginning Balance, Shares at Dec. 31, 2020		35,505				(138)
Net income (loss)	1,298			1,181			117
Exercise of stock options	13		13
Exercise of stock options, Shares		2
Restricted stock units issued	(133)	$ (1)	(134)
Restricted stock units issued, Shares		40
Share based compensation earned	807		807
Share based compensation earned, Shares		21
Translation gain (loss)	55				55
Ending Balance at Mar. 31, 2021	205,651	$ 356	255,982	(36,960)	(14,441)	$ (356)	1,070
Ending Balance, Shares at Mar. 31, 2021		35,568				(138)
Beginning Balance at Dec. 31, 2021	205,957	$ 350	252,989	(36,715)	(12,070)		1,403
Beginning Balance, Shares at Dec. 31, 2021		35,028
Net income (loss)	2,810			2,792			18
Restricted stock units issued	(67)		67
Restricted stock units issued, Shares		34
Share based compensation earned	953		953
Share based compensation earned, Shares		14
Translation gain (loss)	(531)				(531)
Noncontrolling interest distribution	(900)						(900)
Noncontrolling interest acquired	5,000						5,000
Ending Balance at Mar. 31, 2022	$ 213,222	$ 350	$ 253,875	$ (33,923)	$ (12,601)		$ 5,521
Ending Balance, Shares at Mar. 31, 2022		35,076