Consolidated Statement of Shareholders' Equity - 3 months ended Mar. 31, 2020 - USD ($) $ in Thousands	Total	Common Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Deficit [Member]
Balance at Dec. 31, 2019	$ 9,696	$ 138,877	$ (987)	$ (128,194)
Balance, Shares at Dec. 31, 2019	13,042,293	13,042,293
Share-based compensation, including issuance of restricted stock	$ 215	$ 215
Share-based compensation, including issuance of restricted stock, Shares		56,425
Net loss	(474)			(474)
Foreign currency translation adjustment, net of tax	(35)	$ (1)	(34)
Unrealized gain on investments, net of tax	(1)		(1)
Balance at Mar. 31, 2020	$ 9,401	$ 139,091	$ (1,022)	$ (128,668)
Balance, Shares at Mar. 31, 2020	13,098,718	13,098,718