Other Non-Interest Income and Expense (Other Non-Interest Income and Expense) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Other Income and Expenses [Abstract]
Other	$ 55,405	$ 52,060	$ 54,941
Total other non-interest income	55,405	52,060	54,941
Professional services	58,741	56,385	53,932
Advertising/promotions	56,865	51,403	48,608
Other	161,550	136,623	126,827
Total other non-interest expense	$ 277,156	$ 244,411	$ 229,367