Leases - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Leases [Abstract]
Right of use lease asset	$ 5,300		$ 5,300
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	$ 5,166		$ 5,166
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 4 months 24 days		3 years 4 months 24 days
Operating lease weighted-average discount rate	2.30%		2.30%
Operating lease revenue	$ 1,400	$ 1,300	$ 2,700	$ 2,700