Tax Effect of Temporary Differences and Tax Attributes Representing Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets:
Net operating loss carryforwards	$ 382,936	$ 457,362
Tax credits	4,222	4,453
Expense associated with stock options and restricted stock	8,178	9,364
Workers' compensation allowance	15,770	14,833
Other deferred tax asset	25,020	26,483
Total deferred tax assets, gross	436,126	512,495
Allowance to reduce deferred tax asset to expected realizable value	(91,685)	(189,737)
Total deferred tax assets, net	344,441	322,758
Deferred tax liabilities:
Property and equipment basis difference	(355,129)	(335,980)
Other	(14,840)	(12,037)
Total deferred tax liabilities	(369,969)	(348,017)
Net deferred tax liability	$ (25,528)	$ (25,259)