Income (Loss) Per Share - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended			6 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2021	Sep. 30, 2021	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share [Abstract]
Loss from continuing operations	$ 5,388	$ (1,578)		$ (3,994)	$ 1,394	$ (4,796)	$ (14,119)
Loss from discontinued operations, net of taxes						(17,372)	(13,307)
Net loss	$ 5,388	$ (2,829)	$ (18,537)	$ (21,366)	$ (15,978)	$ (22,168)	$ (27,426)
Basic and diluted loss from continuing operations	$ 0.35	$ (0.10)		$ (0.26)	$ 0.09	$ (0.31)	$ (0.92)
Basic and diluted loss from discontinued operations						(1.12)	(0.87)
Basic and diluted loss per common share	$ 0.35	$ (0.18)	$ (1.20)	$ (1.38)	$ (1.03)	$ (1.43)	$ (1.79)
Weighted average shares						15,510	15,308