Unaudited Condensed Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Beginning balance at Dec. 31, 2018	$ 46,583	$ 19	$ 155,455	$ (107,773)	$ (993)	$ (125)
Beginning balance (in shares) at Dec. 31, 2018		19,294,296				33,467
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(1,164)			(1,164)
Stock-based compensation	651		651
Exercise of stock options (in shares)		1,500
Exercise of stock options	2		2
Foreign currency translation adjustment, net of taxes	31				31
Ending balance (in shares) at Mar. 31, 2019		19,295,796				33,467
Ending balance at Mar. 31, 2019	46,103	$ 19	156,108	(108,937)	(962)	$ (125)
Beginning balance at Dec. 31, 2019	46,842	$ 19	158,192	(109,943)	(1,301)	$ (125)
Beginning balance (in shares) at Dec. 31, 2019		19,465,877				33,467
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(231)			(231)
Stock-based compensation	$ 545		545
Issuance of restricted stock (in shares)	33,343
Issuance of restricted stock	$ 0
Tax withholding on restricted stock	(73)		(73)
Foreign currency translation adjustment, net of taxes	(944)
Ending balance (in shares) at Mar. 31, 2020		19,499,220				33,467
Ending balance at Mar. 31, 2020	$ 46,139	$ 19	$ 158,664	$ (110,174)	$ (2,245)	$ (125)