Premises and Equipment - Future Minimum Lease Payments Under Non-cancellable Leases (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Abstract]
Operating Leases, 2022	$ 5,215
Operating Leases, 2023	4,578
Operating Leases, 2024	4,093
Operating Leases, 2025	4,007
Operating Leases, 2026	3,976
Operating Leases, 2027 and thereafter	39,133
Operating Leases, Total lease payments	61,002
Operating Leases, Less: capitalized interest	(13,545)
Operating Leases, Present value of lease liabilities	$ 47,457	$ 56,000
Operating Lease Liability Statement Of Financial Position Extensible List	Other liabilities	Other liabilities
Finance Leases, 2022	$ 873
Finance Leases, 2023	885
Finance Leases, 2024	890
Finance Leases, 2025	861
Finance Leases, 2026	809
Finance Leases, 2027 and thereafter	2,969
Finance Leases, Total lease payments	7,287
Finance Leases, Less: capitalized interest	(2,523)
Finance Leases, Present value of lease liabilities	$ 4,764	$ 5,200
Finance lease ROU liabilities statement of financial position extensible list	Other liabilities	Other liabilities
2022	$ 6,088
2023	5,463
2024	4,983
2025	4,868
2026	4,785
2027 and thereafter	42,102
Total lease payments	68,289
Less: capitalized interest	(16,068)
Present value of lease liabilities	$ 52,221