Income Taxes - Income Tax Expense (Benefit) from Continuing Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current:
U.S. federal	$ 0	$ 0	$ (732)
State	1,321	1,272	2,901
Foreign	0	0	333
Total current expense	1,321	1,272	2,502
Deferred:
U.S. federal	(8,970)	40,857	(62,580)
State	(1,569)	202	(4,970)
Foreign	0	0	(6)
Total deferred expense (benefit)	(10,539)	41,059	(67,556)
Income tax expense (benefit)	$ (9,218)	$ 42,331	$ (65,054)