Condensed 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		22		22
Shares issued under stock-based compensation plans (in shares)	8,512
Stock-based compensation		214		214
Components of comprehensive income:
Net income			15,268	15,268
Ending balance at Sep. 30, 2021	$ 11	(111,622)	(10,922)	(122,533)
Ending balance (in shares) at Sep. 30, 2021	11,238,994
Beginning balance at Jun. 30, 2021	$ 11	(111,726)	(17,548)	(129,263)
Beginning balance (in shares) at Jun. 30, 2021	11,237,056
Shares issued under stock-based compensation plans		(12)		(12)
Shares issued under stock-based compensation plans (in shares)	1,938
Stock-based compensation		116		116
Components of comprehensive income:
Net income			6,626	6,626
Ending balance at Sep. 30, 2021	$ 11	(111,622)	(10,922)	(122,533)
Ending balance (in shares) at Sep. 30, 2021	11,238,994
Beginning balance at Dec. 31, 2021	$ 11	(110,782)	(10,249)	$ (121,020)
Beginning balance (in shares) at Dec. 31, 2021	11,255,466			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			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			11,287,909