Loans - Summary of Loans (Detail) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans before deferred costs	$ 638,860	$ 551,133
Deferred loan (fees) costs	(2,061)	500
Total Loans	636,799	551,633
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans before deferred costs	215,139	137,114
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans before deferred costs	198,948	196,748
Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans before deferred costs	177,799	174,259
Construction & Land Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans before deferred costs	28,123	23,960
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans before deferred costs	$ 18,851	$ 19,052