Condensed Consolidated Statements of Stockholders' Deficit - USD ($) $ in Thousands	Common Stock	Capital deficiency	Accumulated earnings	Total
Beginning balance at Dec. 31, 2021	$ 11	$ (110,782)	$ (10,249)	$ (121,020)
Beginning balance (in shares) at Dec. 31, 2021	11,255,466
Shares issued under stock-based compensation plans		(231)		(231)
Shares issued under stock-based compensation plans (in shares)	32,443
Stock-based compensation		2,928		2,928
Components of comprehensive income:
Net income			24,063	24,063
Ending balance at Sep. 30, 2022	$ 11	(108,085)	13,814	(94,260)
Ending balance (in shares) at Sep. 30, 2022	11,287,909
Beginning balance at Jun. 30, 2022	$ 11	(108,880)	1,904	(106,965)
Beginning balance (in shares) at Jun. 30, 2022	11,262,688
Shares issued under stock-based compensation plans		(171)		(171)
Shares issued under stock-based compensation plans (in shares)	25,221
Stock-based compensation		966		966
Components of comprehensive income:
Net income			11,910	11,910
Ending balance at Sep. 30, 2022	$ 11	(108,085)	13,814	(94,260)
Ending balance (in shares) at Sep. 30, 2022	11,287,909
Beginning balance at Dec. 31, 2022	$ 11	(108,379)	26,291	$ (82,077)
Beginning balance (in shares) at Dec. 31, 2022	11,390,355			11,390,355
Shares issued under stock-based compensation plans		(327)		$ (327)
Shares issued under stock-based compensation plans (in shares)	63,194
Stock-based compensation		4,431		4,431
Components of comprehensive income:
Net income			21,253	21,253
Ending balance at Sep. 30, 2023	$ 11	(104,275)	47,544	$ (56,720)
Ending balance (in shares) at Sep. 30, 2023	11,453,549			11,453,549
Beginning balance at Jun. 30, 2023	$ 11	(106,668)	43,687	$ (62,970)
Beginning balance (in shares) at Jun. 30, 2023	11,430,245
Shares issued under stock-based compensation plans		(207)		(207)
Shares issued under stock-based compensation plans (in shares)	23,304
Stock-based compensation		2,600		2,600
Components of comprehensive income:
Net income			3,857	3,857
Ending balance at Sep. 30, 2023	$ 11	$ (104,275)	$ 47,544	$ (56,720)
Ending balance (in shares) at Sep. 30, 2023	11,453,549			11,453,549