CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Shares of Preferred Stock	Common Stock and Additional Paid-in Capital	Preferred Stock	Accumulated Deficit
Balance at Dec. 31, 2019	$ 11,743			$ 61,992	$ 62,423	$ (112,672)
Balance (in shares) at Dec. 31, 2019		1,688
Balance (in shares) at Dec. 31, 2019			2,812
Increase (Decrease) in Stockholders' Equity
Stock-based compensation	49			49
Net loss	(688)					(688)
Balance at Dec. 31, 2020	$ 11,104			62,041	62,423	(113,360)
Balance (in shares) at Dec. 31, 2020	1,688	1,688
Balance (in shares) at Dec. 31, 2020	2,812		2,812
Increase (Decrease) in Stockholders' Equity
Exercise of restricted share awards net settlement option	$ (7)			(7)
Exercise of restricted share awards net settlement option (in shares)		(1)
Treasury shares, no par value (in shares)		1
Stock-based compensation	481			481
Stock-based compensation (in shares)		87
Net loss	(1,182)					(1,182)
Balance at Dec. 31, 2021	$ 10,396			$ 62,515	$ 62,423	$ (114,542)
Balance (in shares) at Dec. 31, 2021	1,775	1,775
Balance (in shares) at Dec. 31, 2021	2,812		2,812