Liquidity - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Cash And Cash Equivalents [Abstract]
Cash	$ 27,566		$ 28,864
Accumulated deficit	269,119		266,351
Net income (loss)	(2,768)	$ 2,599	(2,800)
Cash flows from operations	(932)	844	$ 800
Aggregate net interest-bearing indebtedness related to financed capital leases	2,200
Aggregate net interest-bearing indebtedness due within one year	1,000
Other non-interest bearing current liabilities	13,100
Net revenues	$ 19,945	$ 17,756