Loans - Additional Information (Detail) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2022 USD ($) Loan	Dec. 31, 2021 USD ($) Loan
Accounts Notes And Loans Receivable [Line Items]
Troubled debt restructurings	$ 2,877	$ 2,878
Troubled debt restructurings modified	0	0
Troubled debt restructurings additional amount	$ 0	$ 0
Financing receivable, modifications, number of contracts \| Loan		0
Number of troubled debt restructured loans \| Loan	0	0
Loan modification description	A loan is considered to be in payment default once it is 90 days contractually past due under the modified terms.
Loans and leases receivable net reported amount	$ 267,527	$ 252,160
Total loans	$ 269,985	254,612
Paycheck Protection Program [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans and leases receivable net reported amount		3,446
Interest rate during period	1.00%
Total loans	$ 2	$ 779
Paycheck Protection Program [Member] \| Maximum
Accounts Notes And Loans Receivable [Line Items]
Term of loans approved by SBA	5 years

Financing receivable additional recorded investment.

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Number of financing receivable troubled restructured Loans.

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Loan modification description.

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Term of loan approved by government authorities.

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Number of financing receivables that have been modified by troubled debt restructurings.

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Amount of financing receivable modified as troubled debt restructuring.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
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Amount of financing receivable modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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The effective interest rate during the reporting period.

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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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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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