Allowance for Credit Losses and Unfunded Loan Commitments - Accrued Interest Receivable (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Receivables [Abstract]
Total Interest Receivable	$ 1,549,415	$ 1,354,565
90 Days or Greater Past Due	6,420	8,373
Allowance for uncollectible interest	12,366	9,897
Accrued interest receivable not expected to be capitalized	164,000	151,000
Accrued interest receivable expected to be capitalized reserved	$ 1,400,000	$ 1,200,000