Leases - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Leases [Abstract]
Right of use lease asset	$ 5,900	$ 5,600
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Accrued interest receivable and other assets	Accrued interest receivable and other assets
Operating lease liability	$ 5,837	$ 5,400
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Accrued interest payable and other liabilities	Accrued interest payable and other liabilities
Operating lease weighted-average remaining lease term	3 years 2 months 12 days
Operating lease weighted-average discount rate	2.60%
Operating lease revenue	$ 5,900	$ 5,400	$ 4,900
Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration]	Occupancy, Net	Occupancy, Net	Occupancy, Net