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v3.24.0.1

Borrowings and Subordinated Notes - Additional Information (Detail) |  | 12 Months Ended |  |
--- | --- | --- | --- | ---
Jul. 30, 2021 USD ($) | Dec. 31, 2023 USD ($) Loan | Dec. 31, 2022 USD ($) | Mar. 31, 2023 USD ($) | Sep. 29, 2022 USD ($)
Debt Instrument [Line Items] |  |  |  |  |
Number of loans secured | Loan |  | 2 |  |  |
Term note |  | $ 30,000,000 |  |  |
Line of credit |  | $ 10,000,000 |  | $ 10,000,000 | $ 10,000,000
Percentage of interest on loan accrued rate |  | 2.50% |  |  |
Percentage of line of credit accrues rate |  |  |  |  | 5.50%
Maturity date |  | Sep. 30, 2023 |  |  |
Total borrowings excluding for fair value related to acquisition |  | $ 265,773,000 | $ 127,400,000 |  |
Total borrowings, fair value related to acquisition |  | 23,000 | 47,000 |  |
Advances, secured by mortgage loans |  |  | 659,000 |  |
Unsecured borrowings through correspondent banks |  | 128,000,000 | 73,000,000.0 |  |
Borrowing capacity under the Federal Reserve's BTFP |  | 69,900,000 |  |  |
Unpledged securities which could be sold or used as collateral |  | 97,300,000 | 249,600,000 |  |
Additional borrowings available from the Federal Home Loan Bank based on current pledging |  | 42,500,000 | 2,000,000 |  |
Debt instrument basis points | 2.63% |  |  |  |
Debt instrument, frequency of periodic payment | semi-annually |  |  |  |
Term of loan | 5 years |  |  |  |
Redemption price of principal amount of notes redeemed | 100.00% |  |  |  |
Prime Rate [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Variable line of credit |  | $ 15,000,000 |  |  |
Maturity date |  | Sep. 27, 2024 |  |  |
Private Placement |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Subordinated notes | $ 35,000,000 |  |  |  |
Fixed-to-floating interest rate | 3.25% |  |  |  |
Subordinated notes, due date | Jul. 30, 2031 |  |  |  |
Percentage of notes prices on principal amount | 100.00% |  |  |  |
Peoples Federal Savings and Loan Association [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Bank undertook amount |  | $ 965,000 |  |  |
Peoples Federal Savings and Loan Association [Member] | Minimum [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Bank loan maturity year |  | 2022 |  |  |
Peoples Federal Savings and Loan Association [Member] | Maximum [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Bank loan maturity year |  | 2028 |  |  |
Perpetual Federal Savings Bank {Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Bank undertook amount |  | $ 6,000,000 |  |  |
Collateral Pledged [Member] | Federal Home Loan Bank Advances [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Pledging of eligible commercial real estate loans |  | 158,900,000 |  |  |
Asset Pledged as Collateral without Right [Member] | Federal Home Loan Bank Advances [Member] | 1-4 Family Real Estate Loans [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Advances, secured by mortgage loans |  | 223,000 |  |  |
Asset Pledged as Collateral without Right [Member] | Federal Home Loan Bank Advances [Member] | HALOC [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Advances, secured by mortgage loans |  |  | 232,900 |  |
Cash Management Advance |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Unsecured borrowings through correspondent banks |  | $ 150,100,000 | $ 130,400,000 |  |
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 |  |  |
Outstanding borrowings |  | $ 0 |  |  |

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