CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (unaudited) - USD ($) shares in Thousands, $ 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, 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		(6,541)
Net income (loss) attributable to common stockholders				(17,156)		(17,156)
Sale of common stock	$ 8	(5)				3
Settlement of stock warrants (in shares)	750
Settlement of stock awards	$ 5		$ (176)			(171)
Settlement of stock awards (in shares)	606		(225)
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		(6,766)
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		(6,740)
Net income (loss) attributable to common stockholders				(10,920)		(10,920)
Sale of common stock	$ 8	(5)				3
Settlement of stock warrants (in shares)	750
Settlement of stock awards	$ 1		$ (27)			(26)
Settlement of stock awards (in shares)	151		(26)
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		(6,766)
Balance at beginning of period at Dec. 31, 2023	$ 450	145,301	$ (57,637)	(95,905)	(2,257)	(10,048)
Balance at beginning of period (in shares) at Dec. 31, 2023	44,965		(6,766)
Net income (loss) attributable to common stockholders						8,853
Balance at ending of period at Mar. 31, 2024	$ 708	149,596	$ (57,665)	(87,052)	(2,137)	3,450
Balance at ending of period (in shares) at Mar. 31, 2024	70,736		(6,943)
Balance at beginning of period at Dec. 31, 2023	$ 450	145,301	$ (57,637)	(95,905)	(2,257)	(10,048)
Balance at beginning of period (in shares) at Dec. 31, 2023	44,965		(6,766)
Net income (loss) attributable to common stockholders				7,127		7,127
Sale of common stock	$ 251	4,141				4,392
Settlement of stock warrants (in shares)	25,112
Settlement of stock awards	$ 10		$ (28)			(18)
Settlement of stock awards (in shares)	955		(177)
Unrealized gain on pension liability					240	240
Stock-based compensation		133				133
Balance at ending of period at Jun. 30, 2024	$ 711	149,575	$ (57,665)	(88,778)	(2,017)	1,826
Balance at ending of period (in shares) at Jun. 30, 2024	71,032		(6,943)
Balance at beginning of period at Mar. 31, 2024	$ 708	149,596	$ (57,665)	(87,052)	(2,137)	3,450
Balance at beginning of period (in shares) at Mar. 31, 2024	70,736		(6,943)
Net income (loss) attributable to common stockholders				(1,726)		(1,726)
Sale of common stock	$ 0	(94)	$ 0	0	0	(94)
Settlement of stock warrants (in shares)	0		0
Settlement of stock awards	$ 3					3
Settlement of stock awards (in shares)	296
Unrealized gain on pension liability					120	120
Stock-based compensation		73				73
Balance at ending of period at Jun. 30, 2024	$ 711	$ 149,575	$ (57,665)	$ (88,778)	$ (2,017)	$ 1,826
Balance at ending of period (in shares) at Jun. 30, 2024	71,032		(6,943)