Loans - Summary of Loans (Detail) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans before deferred costs	$ 609,710	$ 549,050
Deferred loan costs, net	261	104
Total Loans	609,971	549,154
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans before deferred costs	135,975	123,933
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans before deferred costs	208,979	194,754
Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans before deferred costs	190,029	168,247
Construction & Land Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans before deferred costs	58,388	46,042
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans before deferred costs	$ 16,339	$ 16,074