Consolidated Statement of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Preferred Stock [Member]	Common Stock [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Dec. 31, 2020	0	13,235,038
Balance at Dec. 31, 2020	$ 0	$ 139,726	$ (992)	$ (130,006)	$ 8,728
Exercise of stock options (in shares)	0	135,303			24,255
Exercise of stock options	$ 0	$ 53	0	0	$ 53
Sale of common stock (in shares)	0	108,879
Sale of common stock	$ 0	$ 360	0	0	360
Share-based compensation, including issuance of restricted stock (in shares)	0	0
Share-based compensation, including issuance of restricted stock	$ 0	$ 378	0	0	378
Net income (loss)	0	0	0	(567)	(567)
Foreign currency translation, net of tax	$ 0	$ (23)	(43)	0	(66)
Balance (in shares) at Jun. 30, 2021	0	13,479,220
Balance at Jun. 30, 2021	$ 0	$ 140,494	(1,035)	(130,573)	8,886
Balance (in shares) at Mar. 31, 2021	0	13,298,150
Balance at Mar. 31, 2021	$ 0	$ 139,907	(1,001)	(130,866)	8,040
Exercise of stock options (in shares)	0	72,191
Exercise of stock options	$ 0	$ 17	0	0	$ 17
Sale of common stock (in shares)	0	108,879			108,879
Sale of common stock	$ 0	$ 360	0	0	$ 360
Share-based compensation, including issuance of restricted stock (in shares)	0	0
Share-based compensation, including issuance of restricted stock	$ 0	$ 210	0	0	210
Net income (loss)	0	0	0	293	293
Foreign currency translation, net of tax	$ 0	$ 0	(34)	0	(34)
Balance (in shares) at Jun. 30, 2021	0	13,479,220
Balance at Jun. 30, 2021	$ 0	$ 140,494	$ (1,035)	$ (130,573)	$ 8,886