Deposits (Scheduled Maturities of Time Deposits Not Covered By Deposit Insurance) (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Deposits [Abstract]
Due within 3 months or less	$ 1,991,080
Due after 3 months and within 6 months	139,435
Due after 6 months and within 12 months	167,732
Due after 12 months	41,469
Time deposits liability, above US Insurance Limit Total	$ 2,339,716	$ 430,128