Leases - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2022 USD ($) LeaseAgreement	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)
Lessee Lease Description [Line Items]
Right-of-use assets related to operating leases	$ 1,800,000	$ 1,100,000	$ 1,800,000
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets	Other assets
Operating lease liability related to operating leases	$ 1,842,000		$ 1,800,000
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]	us-gaap:OtherLiabilities		us-gaap:OtherLiabilities
Number of operating lease agreement | LeaseAgreement	9
Lessee, Operating Lease, Existence of Option to Extend [true false]	true
Operating lease cost	$ 170,000	$ 245,000
Weighted average remaining lease term for operating leases	4 years 4 months 24 days		4 years 6 months
Weighted average discount rate	1.95%		1.99%
Minimum [Member]
Lessee Lease Description [Line Items]
Lease renewal term	1 year
Maximum [Member]
Lessee Lease Description [Line Items]
Lease renewal term	10 years