Loans - Schedule of Accounts, Notes, Loans and Financing Receivable (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Total Loans	$ 374,991	$ 367,437
Net deferred loan costs	1,650	705
Allowance for loan losses	(3,590)	(3,342)	$ (2,875)
Net loans	373,051	364,800
CRE [Member]
Total Loans	72,057	66,166
Allowance for loan losses	(833)	(753)	(781)
MF [Member]
Total Loans	8,998	6,619
Allowance for loan losses	(80)	(60)	(23)
C+I [Member]
Total Loans	26,851	45,262
Allowance for loan losses	(194)	(267)	(350)
ADL [Member]
Total Loans	21,365	23,145
Allowance for loan losses	(178)	(174)	(145)
RES [Member]
Total Loans	234,199	213,718
Allowance for loan losses	(2,139)	(1,656)	(1,503)
HELOC [Member]
Total Loans	6,947	9,583
Allowance for loan losses	(63)	(78)	(52)
CON [Member]
Total Loans	4,574	2,944
Allowance for loan losses	$ (75)	$ (52)	$ (18)

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount, before allowance and fees, of loans and leases receivable. Excludes loans and leases covered under loss sharing agreements.

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

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Amount of deferred fees paid by borrowers and unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of loans that are being amortized into income as an adjustment to yield. Excludes amounts for loans and leases covered under loss sharing agreements.

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