Federal Home Loan Bank and Short-term Borrowings (Detail) $ in Thousands	12 Months Ended
Dec. 31, 2020 USD ($) item shares	Dec. 31, 2019 USD ($)
Short-term Debt [Line Items]
Federal home loan bank shares owned \| shares	11,965
Percentage of investment to be maintained on total assets	0.09%
Amount of dollar cap on total assets	$ 15,000
Additional percentage of investment to be maintained on total advances	4.25%
Percentage of credit available on total assets	25.00%
Amount of credit available on total assets	$ 107,700
Short term advances	20,000
Average short-term borrowings	24,300	$ 25,600
Total loans	$ 253,772	284,738
Number of financial institution lending credit facility \| item	2
Commercial
Short-term Debt [Line Items]
Total loans	$ 14,121	$ 11,907
Commercial \| SBA PPP Loan
Short-term Debt [Line Items]
Debt instrument, interest rate, stated percentage	0.35%
Total loans	$ 9,912
Convertible advances maturing on July 23, 2019 \| Federal Home Loan Bank of Atlanta [Member]
Short-term Debt [Line Items]
Convertible debt	$ 5,000
Debt instrument, maturity date	Dec. 27, 2021
Debt instrument, interest rate, stated percentage	0.39%
Convertible advances maturing on August 22, 2019 \| Federal Home Loan Bank of Atlanta [Member]
Short-term Debt [Line Items]
Convertible debt	$ 5,000
Debt instrument, maturity date	Dec. 24, 2021
Debt instrument, interest rate, stated percentage	0.34%
Convertible advances maturing on November 1, 2019 \| Federal Home Loan Bank of Atlanta [Member]
Short-term Debt [Line Items]
Convertible debt	$ 10,000
Debt instrument, maturity date	Dec. 31, 2021
Debt instrument, interest rate, stated percentage	0.34%
Financial Bank One [Member]
Short-term Debt [Line Items]
Line of credit, amount available for borrowing	$ 9,000
Financial Bank Two [Member]
Short-term Debt [Line Items]
Line of credit, amount available for borrowing	8,000
Financial Bank Three [Member]
Short-term Debt [Line Items]
Line of credit, amount available for borrowing	$ 10,600
Minimum
Short-term Debt [Line Items]
Weighted average interest rate	1.94%
Maximum
Short-term Debt [Line Items]
Weighted average interest rate		2.26%

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Amount Of Credit Available On Total Assets.

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Dollar cap on total assets.

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Federal Home Loan Bank Shares Owned.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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Amount of advance from Federal Home Loan Bank (FHLBank) maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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