CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Shares of Common Stock	Shares of Preferred Stock	Shares of Treasury Stock	Common Stock and Additional Paid-in Capital	Preferred Stock	Accumulated Deficit
Balance at Dec. 31, 2020	$ 11,104				$ 62,041	$ 62,423	$ (113,360)
Balance (in shares) at Dec. 31, 2020		1,688
Balance (in shares) at Dec. 31, 2020			2,812
Net income (loss)	21						21
Balance at Mar. 31, 2021	11,125				62,041	62,423	(113,339)
Balance (in shares) at Mar. 31, 2021		1,688
Balance (in shares) at Mar. 31, 2021			2,812
Balance at Dec. 31, 2020	11,104				62,041	62,423	(113,360)
Balance (in shares) at Dec. 31, 2020		1,688
Balance (in shares) at Dec. 31, 2020			2,812
Net income (loss)	(482)
Balance at Jun. 30, 2021	10,738				62,157	62,423	(113,842)
Balance (in shares) at Jun. 30, 2021		1,727
Balance (in shares) at Jun. 30, 2021			2,812
Balance at Mar. 31, 2021	11,125				62,041	62,423	(113,339)
Balance (in shares) at Mar. 31, 2021		1,688
Balance (in shares) at Mar. 31, 2021			2,812
Stock-based compensation	123				123
Stock-based compensation (in shares)		39
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		1
Net income (loss)	(503)						(503)
Balance at Jun. 30, 2021	10,738				62,157	62,423	(113,842)
Balance (in shares) at Jun. 30, 2021		1,727
Balance (in shares) at Jun. 30, 2021			2,812
Balance at Dec. 31, 2021	$ 10,396				62,515	62,423	(114,542)
Balance (in shares) at Dec. 31, 2021	1,775	1,775		(1)
Balance (in shares) at Dec. 31, 2021	2,812		2,812
Restricted stock issuance (in shares)		24
Stock-based compensation	$ 111				111
Exercise of restricted share awards net settlement option	(46)				(46)
Exercise of restricted share awards net settlement option (in shares)				(8)
Net income (loss)	(2,927)						(2,927)
Balance at Mar. 31, 2022	7,534				62,580	62,423	(117,469)
Balance (in shares) at Mar. 31, 2022		1,799		(9)
Balance (in shares) at Mar. 31, 2022			2,812
Balance at Dec. 31, 2021	$ 10,396				62,515	62,423	(114,542)
Balance (in shares) at Dec. 31, 2021	1,775	1,775		(1)
Balance (in shares) at Dec. 31, 2021	2,812		2,812
Net income (loss)	$ (4,252)
Balance at Jun. 30, 2022	$ 6,213				62,584	62,423	(118,794)
Balance (in shares) at Jun. 30, 2022	1,769	1,769		(9)
Balance (in shares) at Jun. 30, 2022	2,812		2,812
Balance at Mar. 31, 2022	$ 7,534				62,580	62,423	(117,469)
Balance (in shares) at Mar. 31, 2022		1,799		(9)
Balance (in shares) at Mar. 31, 2022			2,812
Forfeitures of stock-based awards	4				4
Forfeitures of stock-based awards (in shares)		(30)
Net income (loss)	(1,325)						(1,325)
Balance at Jun. 30, 2022	$ 6,213				$ 62,584	$ 62,423	$ (118,794)
Balance (in shares) at Jun. 30, 2022	1,769	1,769		(9)
Balance (in shares) at Jun. 30, 2022	2,812		2,812