Loans Receivable - Additional Information (Detail) - USD ($)	Mar. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Loans and Leases Receivable Disclosure [Line Items]
Unsecured consumer loan include overdrafts reclassified as loans	$ 272,000	$ 185,000
Total Gross Loans	1,430,642,000	1,358,935,000
Financing receivable, nonaccrual	0	0
TDRs	0		$ 0
Commercial & Industrial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total Gross Loans	111,183,000	164,014,000
Commercial & Industrial [Member] \| Small Business Administration (SBA), CARES Act, Paycheck Protection Program [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total Gross Loans	$ 18,800,000	$ 58,300,000

Amount of deposits held by the entity that have been reclassified as loan balances receivable, for example, but not limited to, overdrafts receivable.

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-SubTopic 405
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- Definition

Amount of financing receivable modified as troubled debt restructuring.

+ References

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-Publisher FASB
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-Topic 310
-SubTopic 10
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Amount of financing receivable on nonaccrual status.

+ References

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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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-Publisher SEC
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- Definition

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

+ References

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