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Borrowings and Subordinated Notes - Additional Information (Detail) $ in Thousands		12 Months Ended
	Jul. 30, 2021 USD ($)	Dec. 31, 2021 USD ($) Loan	Dec. 31, 2020 USD ($)
Debt Instrument [Line Items]
Number of loans secured | Loan		2
Term note		$ 30,000
Line of credit		$ 10,000
Percentage of interest on loan accrues rate		2.50%
Total borrowings excluding for fair value related to acquisition		$ 23,868	$ 18,000
Total borrowings, fair value related to acquisition		197	164
Unsecured borrowings through correspondent banks		69,000	69,000
Unpledged securities which could be sold or used as collateral		313,600	206,700
Additional borrowings available from the Federal Home Loan Bank based on current pledging		$ 91,200	7,400
Debt instrument basis points	2.63%
Debt instrument, frequency of periodic payment	semi-annually
Term of loan	5 years	3 years
Redemption price of principal amount of notes redeemed	100.00%
Private Placement
Debt Instrument [Line Items]
Subordinated notes	$ 35,000
Fixed-to-floating interest rate	3.25%
Subordinated notes, due date	Jul. 30, 2031
Percentage of notes prices on principal amount	100.00%
Perpetual Federal Savings Bank {Member]
Debt Instrument [Line Items]
Bank undertook amount		$ 6,000
Mortgage Loans at Cost [Member]
Debt Instrument [Line Items]
Advances, secured by mortgage loans		193,200	38,000
Cash Management Advance
Debt Instrument [Line Items]
Unsecured borrowings through correspondent banks		$ 94,200	$ 79,100
Term Note [Member]
Debt Instrument [Line Items]
Short term debt, term		12-month
Line of Credit [Member]
Debt Instrument [Line Items]
Short term debt, term		12-month

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Advances from Federal Home Loan Banks excluding fair value related to acquisition.

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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.

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Amount of advances or credit lines available from the Federal Home Loan Bank (FHLB).

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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