Income Taxes (Income Tax Expense) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Current income tax expense	$ 117,773	$ 125,025	$ 129,229
Deferred income tax expense (benefit)	5,372	(11,600)	(14,829)
Income tax expense, as reported	$ 123,145	$ 113,425	$ 114,400
Effective tax rate	16.00%	16.30%	16.10%