Components of Income Tax Expense (Benefit) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Expenses [Line Items]
Current income tax expense, Federal	$ 25,037	$ 25,681	$ 32,137
Current income tax expense, State	5,899	5,840	6,592
Current income tax expense, Total	30,936	31,521	38,729
Deferred income tax expense (benefit), Federal	(2,156)	11,484	86,703
Deferred income tax expense (benefit), State	(547)	(23)	12,567
Deferred income tax expense (benefit), Total	(2,703)	11,461	99,270
Income tax expense	$ 28,233	$ 42,982	$ 137,999