Borrowings - Additional Information (Detail) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
	Apr. 08, 2022	Mar. 31, 2024	Dec. 31, 2022	Dec. 31, 2023
Debt Instrument [Line Items]
Note payable		$ 584		$ 590
Proceeds from unsecured lines of credit		77,000
Borrowings under line of credit		0		0
Long-term FHLB advances		40,000		0
Short-term FHLB advances		$ 0		$ 10,000
FHLB, advance fixed rate		4.827%
FHLB, advance maturity due date		Feb. 20, 2026
Subordinated Notes Sale - 2022 [Member]
Debt Instrument [Line Items]
Debt Instrument, principal amount	$ 20,000
Subordinated borrowing interest rate	4.50%
Subordinated borrowing due date		Apr. 15, 2032
Long-term debt, fixed interest percentage rate		4.50%
Proceeds from contributed capital			$ 15,000
Subordinated borrowing interest rate basis		The Notes, which mature on April 15, 2032, bear interest at a fixed annual rate of 4.50% for the period up to but excluding April 15, 2027 (the “Fixed Interest Rate Period”). From April 15, 2027 until maturity or redemption (the “Floating Interest Rate Period”), the interest rate will adjust to a floating rate equal to a benchmark rate, which is expected to be the then-current three-month Secured Overnight Financing Rate ("SOFR"), plus 203 basis points. The Company will pay interest in arrears semi-annually during the Fixed Interest Rate Period and quarterly during the Floating Interest Rate Period.
Subordinated Notes Sale - 2022 [Member] | Secured Overnight Financing Rate (SOFR) [Member]
Debt Instrument [Line Items]
Basis points spread		203.00%
Subordinated Notes Sale - 2022 [Member] | Secured Overnight Financing Rate (SOFR) [Member] | Subordinated Notes Second Tranche [Member]
Debt Instrument [Line Items]
Basis points spread		590.00%
Subordinated Notes Sale - 2022 [Member] | Board of Directors [Member]
Debt Instrument [Line Items]
Debt Instrument, principal amount	$ 7,000
Subordinated Notes - Gratz Merger [Member]
Debt Instrument [Line Items]
Debt Instrument, principal amount		$ 20,300
Subordinated borrowing interest rate		5.00%
Subordinated borrowing due date		Oct. 01, 2030
Subordinated borrowing interest rate basis		The notes (the "Merger Subordinated Notes") mature October 1, 2030 and will initially bear interest at a fixed rate of 5.0% until October 1, 2025. From October 1, 2025 to the stated maturity date or early redemption date, the interest rate will reset semi-annually to an annual floating rate equal to the then-current three-month term SOFR plus a spread of 475 basis points, but no less than 5.0%.
Subordinated Notes - Gratz Merger [Member] | Minimum [Member]
Debt Instrument [Line Items]
Subordinated borrowing interest rate		5.00%
Subordinated Notes - Gratz Merger [Member] | Secured Overnight Financing Rate (SOFR) [Member]
Debt Instrument [Line Items]
Basis points spread		475.00%
Subordinated Notes - Partners Merger [Member] | Subordinated Notes First Tranche [Member]
Debt Instrument [Line Items]
Debt Instrument, principal amount		$ 21,400
Note payable		$ 4,500
Debt instrument interest fixed rate		6.875%
Subordinated borrowing due date		Apr. 30, 2028
Subordinated Notes - Partners Merger [Member] | Subordinated Notes Second Tranche [Member]
Debt Instrument [Line Items]
Note payable		$ 18,100
Subordinated borrowing interest rate		6.00%
Subordinated borrowing due date		Jul. 01, 2030
Debt instrument description		The second tranche that has a face value of $18.1 million bears interest at a fixed rate of 6.0% which began on June 25, 2022 to but excluding July 1, 2025, payable semi-annually in arrears. From and including July 1, 2025 to but excluding July 1, 2030, or up to an early redemption date, the interest rate shall reset quarterly to an interest rate per annum equal to the then current three-month SOFR plus 590 basis points, payable quarterly in arrears. Beginning on July 1, 2025 through maturity, the subordinated notes may be redeemed, at the Company’s option, on any scheduled interest payment date. The subordinated notes will mature on July 1, 2030.
Note Payable - Partners Merger [Member]
Debt Instrument [Line Items]
Note payable		$ 584
Deed of trust loan amount		$ 886
Loan refinanced due date		Apr. 30, 2015
Note payable interest rate fixed		3.60%
Interest rate fixed period		10 years
Note payable variable rate		3.00%
Treasury rate maturity		10 years