Allowances for Loan Losses - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Mar. 31, 2022	Dec. 31, 2021
Loans and Leases Receivable Disclosure [Line Items]
Purchased loans acquired with deteriorated credit quality		$ 5,564	$ 5,556
Unpaid principal balance		2,491	840
Non accrual loans recorded investment		1,246	634
Loans receivable		731,080	715,039
Federal Home Loan Bank (FHLB) [Member]
Loans and Leases Receivable Disclosure [Line Items]
Borrowings secured by loans pledged to FHLB		0	1,120
Real Estate Commercial Loans And Construction And Development [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable		353,559
Additional loans and leases receivable carrying amount		$ 126,168
Loan portfolio percentage		48.40%
Commercial Real Estate Portfolio Segment [Member]
Loans and Leases Receivable Disclosure [Line Items]
Purchased loans acquired with deteriorated credit quality		$ 4,329	4,394
Unpaid principal balance		177	0
Non accrual loans recorded investment		143	144
Loans receivable		353,559	338,749
Purchased Credit Impaired Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Purchased loans acquired with deteriorated credit quality		5,564	$ 5,556
Unpaid principal balance		6,627
Estimated fair value of loans		5,384
Contractual principal and interest at Merger		8,509
Preliminary estimate of expected cash flows		5,793
Established credit risk related non-accretable discount		2,716
Accretable discount		$ 409
Covid -19 [Member] \| Small Business Administration (SBA) [Member]
Loans and Leases Receivable Disclosure [Line Items]
Maximum overdue period for a loan modification not to be classfied as troubled debt restructuring	30 days

Additional Loans And Leases Receivable Carrying Amount

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- Definition

Business combination acquired receivable accretable yield.

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- Definition

Business combination acquired receivable expected cash fLows.

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Business combination acquired receivables nonaccretable difference.

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- Definition

Financing receivable loans acquired with deteriorated credit quality.

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No definition available.

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- Definition

Loan portfolio percentage.

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Maximum overdue period for loan modification not to be classified troubled debt restructuring.

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- Definition

Fair value of acquired receivable from business combination, excluding certain loans and debt securities acquired in transfer.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
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- Definition

For receivables acquired in a business combination, excluding certain loans and debt securities acquired in a transfer (as defined), this element represents the gross contractual amounts receivable, by major class of receivable, such as loans, direct finance leases (as defined), and any other class of receivables.

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- Definition

Amount of financing receivable on nonaccrual status.

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- Definition

Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.

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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.

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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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- Definition

Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

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