Income Taxes - Income Tax Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Tax Disclosure [Abstract]
Current income tax expense	$ 31,890	$ 28,684	$ 99,298	$ 64,389
Deferred income tax expense (benefit)	(558)	(974)	(3,047)	(3,378)
Income tax expense, as reported	$ 31,332	$ 27,710	$ 96,251	$ 61,011
Effective tax rate	16.80%	14.00%	16.30%	13.60%