Consolidated Statement of Shareholders' Equity (Unaudited) - 3 months ended Mar. 31, 2021 - 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		13,235,038
Balance at Dec. 31, 2020		$ 139,726	$ (992)	$ (130,083)	$ 8,651
Exercise of stock options (in shares)		63,112			6,963
Exercise of stock options		$ 36			$ 36
Share-based compensation, including issuance of restricted stock (in shares)
Share-based compensation, including issuance of restricted stock		$ 168			168
Net loss				(860)	(860)
Foreign currency translation adjustment, net of tax			(9)		(32)
Foreign currency translation adjustment, net of tax		$ (23)
Balance (in shares) at Mar. 31, 2021		13,298,150
Balance at Mar. 31, 2021		$ 139,907	$ (1,001)	$ (130,943)	$ 7,963