Income Tax - Reconciliation of Income Tax Benefit (Provision) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Income Tax
Expected tax benefit (expense) at federal statutory rate	$ 6,734	$ 97,423
State income tax benefit (expense), net of federal benefit	447	6,189
Non-deductible expenses	(64)	(45)
Changes in valuation allowances	3,192	(110,445)
State rate change, net of federal benefit	(10,192)	6,100
State prior year adjustment	(1,281)	0
Non-cash compensation	8	(137)
PPP loan forgiveness	1,158	0
Other	(2)	800
Total income tax benefit (expense)	$ 0	$ (115)