Premises and Equipment - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Operating Lease, Right-of-Use Asset	$ 40,747	$ 40,550
Operating Lease, Liability	45,149	44,801
Premises and equipment, available-for-sale		1,900
Assets Held-for-sale, Not Part of Disposal Group, Other	0
Operating Lease, Expense	4,700	4,500	$ 6,700
Premises and Equipment [Member]
Property, Plant and Equipment [Line Items]
Depreciation included in noninterest expense	9,100	9,900	10,900
Property Subject to Operating Lease [Member]
Property, Plant and Equipment [Line Items]
Depreciation included in noninterest expense	$ 3,400	$ 1,400	$ 2,600