Earnings Per Common Share - Summary of Reconciliation of Earnings (Loss) Per Common Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Basic Earnings (Loss) per Common Share:
Net loss	$ (34,759)	$ (32,537)
Beneficial conversion feature	0	(11,443)
Net loss attributable to common shares	$ (34,759)	$ (43,980)
Weighted average common shares outstanding — basic	16,463	12,906
Basic earnings (loss) per common share	$ (2.11)	$ (3.41)
Diluted Earnings (Loss) per Common Share:
Net loss attributable to common shares — diluted	$ (34,759)	$ (43,980)
Weighted average common shares outstanding — diluted	16,463	12,906
Diluted earnings (loss) per common share	$ (2.11)	$ (3.41)