Other Non-Interest Income and Expense (Other Non-Interest Income and Expense) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Other Income and Expenses [Abstract]
Other	$ 48,528	$ 47,712	$ 43,563
Total other non-interest income	48,528	47,712	43,563
Professional services	34,747	37,253	39,238
Advertising, promotions and public relations	34,539	34,390	38,001
Travel/meals and entertainment	4,946	7,109	16,459
Other	97,225	87,558	86,967
Total other non-interest expense	$ 171,457	$ 166,310	$ 180,665