Loans and Allowance for Loan Losses - Additional Information (Detail) - USD ($)	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Loans And Leases Receivable Disclosure [Line Items]
Deferred loan fees	$ 899,096	$ 1,101,409
Debt Securities, Held-to-maturity, 90 Days or More Past Due, Still Accruing	0	1
Debt Securities, Held-to-maturity	16,000
Loan Restructuring, Trial Modifications, Amount	$ 0	0
Paycheck Protection Program [Member]
Loans And Leases Receivable Disclosure [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	1.00%
Percentage of guarantee made to eligible borrowers under PPP loans	100.00%
Small Business Administration [Member]
Loans And Leases Receivable Disclosure [Line Items]
Debt Instrument, Collateral Fee	$ 481,000	478,000
Small Business Administration [Member] \| Paycheck Protection Program [Member]
Loans And Leases Receivable Disclosure [Line Items]
Deferred loan fees	62,000	260,000
Debt Instrument, Collateral Fee	$ 678,000	$ 218,000
Minimum [Member] \| Paycheck Protection Program [Member]
Loans And Leases Receivable Disclosure [Line Items]
Debt Instrument, Term	2 years
Minimum [Member] \| Small Business Administration [Member]
Loans And Leases Receivable Disclosure [Line Items]
Percentage of guarantee made to eligible borrowers under PPP loans	1.00%
Maximum [Member] \| Paycheck Protection Program [Member]
Loans And Leases Receivable Disclosure [Line Items]
Debt Instrument, Term	5 years
Maximum [Member] \| Small Business Administration [Member]
Loans And Leases Receivable Disclosure [Line Items]
Percentage of guarantee made to eligible borrowers under PPP loans	5.00%

Percentage of guarantee made to eligible borrowers under PPP loans.

No definition available.

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- Definition

Amount of fees associated with providing collateral for the debt instrument.

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- Definition

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

+ References

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Amount of investment in debt security measured at amortized cost (held-to-maturity), 90 days or more past due and still accruing.

+ References

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- Definition

Amount, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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- Definition

Amount of financing receivable modified on trial basis.

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- Definition

Amount of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts for loans and leases covered under loss sharing agreements.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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