Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Off-Balance-Sheet, Credit Loss, Liability, Change in Method, Credit Loss Expense (Reversal)	$ (19,000)
Lessee, Operating Lease, Liability, Payments, Due	8,300	$ 8,000
Significant change in expected future minimum lease payments since year end	0
Premises and Equipment
Operating Lease, Right-of-Use Asset	286,700		$ 288,800
Other Liabilities [Member]
Operating Lease, Liability	$ 320,300		$ 321,900