Consolidated Statements of Stockholders' Deficit - USD ($) $ in Thousands	Common Stock	Capital deficiency	Accumulated loss	Total
Beginning balance at Dec. 31, 2020	$ 11	$ (111,858)	$ (26,190)	$ (138,037)
Beginning balance (in shares) at Dec. 31, 2020	11,230,482
Shares issued under stock-based compensation plans		(174)		(174)
Shares issued under stock-based compensation plans (in shares)	24,984
Stock-based compensation		1,250		1,250
Components of comprehensive income:
Net income			15,941	15,941
Ending balance at Dec. 31, 2021	$ 11	(110,782)	(10,249)	$ (121,020)
Ending balance (in shares) at Dec. 31, 2021	11,255,466			11,255,466
Shares issued under stock-based compensation plans		(1,076)		$ (1,076)
Shares issued under stock-based compensation plans (in shares)	134,889
Stock-based compensation		3,479		3,479
Components of comprehensive income:
Net income			36,540	36,540
Ending balance at Dec. 31, 2022	$ 11	$ (108,379)	$ 26,291	$ (82,077)
Ending balance (in shares) at Dec. 31, 2022	11,390,355			11,390,355