CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Additional Paid-In Capital	Treasury Stock.	Accumulated Deficit	Accumulated Other Comprehensive Loss	Total
Balance at beginning of period at Dec. 31, 2021	$ 430	$ 144,282	$ (57,166)	$ (36,196)	$ (1,343)	$ 50,007
Balance at beginning of period (in shares) at Dec. 31, 2021	43,024,000		(6,398,000)
Net loss attributable to common stockholders				(5,354)		(5,354)
Settlement of stock awards	$ 4		$ (295)			(291)
Settlement of stock awards (in shares)	367,000		(143,000)
Unrealized gain on pension liability					237	237
Stock-based compensation		298				298
Balance at ending of period at Jun. 30, 2022	$ 434	144,580	$ (57,461)	(41,550)	(1,106)	44,897
Balance at ending of period (in shares) at Jun. 30, 2022	43,391,000		(6,541,000)
Balance at beginning of period at Mar. 31, 2022	$ 434	144,451	$ (57,461)	(41,327)	(1,224)	44,873
Balance at beginning of period (in shares) at Mar. 31, 2022	43,388,000		(6,551,000)
Net loss attributable to common stockholders				(223)		(223)
Settlement of stock awards (in shares)	3,000		10,000
Unrealized gain on pension liability					118	118
Stock-based compensation		129				129
Balance at ending of period at Jun. 30, 2022	$ 434	144,580	$ (57,461)	(41,550)	(1,106)	44,897
Balance at ending of period (in shares) at Jun. 30, 2022	43,391,000		(6,541,000)
Balance at beginning of period at Dec. 31, 2022	$ 435	144,879	$ (57,461)	(56,886)	(3,626)	27,341
Balance at beginning of period (in shares) at Dec. 31, 2022	43,448,000		(6,541,000)
Net loss attributable to common stockholders				(17,156)		(17,156)
Settlement of warrants	$ 8	(5)				3
Settlement of warrants (in shares)	750,000
Settlement of stock awards	$ 5		$ (176)			(171)
Settlement of stock awards (in shares)	606,000		(225,000)
Unrealized gain on pension liability					237	237
Stock-based compensation		240				240
Balance at ending of period at Jun. 30, 2023	$ 448	145,114	$ (57,637)	(74,042)	(3,389)	10,494
Balance at ending of period (in shares) at Jun. 30, 2023	44,804,000		(6,766,000)
Balance at beginning of period at Mar. 31, 2023	$ 439	144,980	$ (57,610)	(63,122)	(3,507)	21,180
Balance at beginning of period (in shares) at Mar. 31, 2023	43,903,000		(6,740,000)
Net loss attributable to common stockholders				(10,920)		(10,920)
Settlement of warrants	$ 8	(5)				3
Settlement of warrants (in shares)	750,000
Settlement of stock awards	$ 1		$ (27)			(26)
Settlement of stock awards (in shares)	151,000		(26,000)
Unrealized gain on pension liability					118	118
Stock-based compensation		139				139
Balance at ending of period at Jun. 30, 2023	$ 448	$ 145,114	$ (57,637)	$ (74,042)	$ (3,389)	$ 10,494
Balance at ending of period (in shares) at Jun. 30, 2023	44,804,000		(6,766,000)