Income Taxes - Income Tax Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Income Tax Disclosure [Abstract]
Current income tax expense	$ 36,384	$ 26,564	$ 105,356	$ 88,371
Deferred income tax expense (benefit)	(2,054)	7,064	(7,124)	3,047
Income tax expense, as reported	$ 34,330	$ 33,628	$ 98,232	$ 91,418
Effective tax rate	16.00%	16.20%	15.80%	15.90%