Borrowings - Additional Information (Detail) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Banks unused remaining borrowing capacity	$ 94,000	$ 71,800
Advances through FLHB	52,268	73,007
Federal home loan bank maximum borrowing capacity	3,000	3,000
Fed Funds Borrowing [Member]
Fed funds borrowing capacity	$ 2,000	5,000
Bank Term Funding Program [Member]
Fixed annual rate	4.89%
Borrowing advance outstanding	$ 20,000	20,000
Borrower-In-Custody of Collateral Program [Member]
Fed funds borrowing capacity	50,600
New England Program [Member]
Advances through FLHB	$ 2,300	$ 2,700
Interest rate	0.00%	0.00%
FHLB Callable Date October 29, 2024 [Member]
FHLB loan borrowed	$ 25,000
Interest rate	4.75%
FHLB Callable Date December 8, 2025 [Member]
FHLB loan borrowed	$ 25,000	$ 25,000
Interest rate	4.38%	4.38%

Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages.

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Fixed interest rate related to the interest rate derivative.

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Amount of advance from Federal Home Loan Bank (FHLBank).

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- Definition

Rate of interest applicable on advance from Federal Home Loan Bank (FHLBank).

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 470
-Name Accounting Standards Codification
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Amount of advances or credit lines available from the Federal Home Loan Bank (FHLB).

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
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-Name Accounting Standards Codification
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Amount of maximum advances or credit lines available from the Federal Home Loan Bank (FHLB).

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Fair value of the amount outstanding under the credit facility.

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-Topic 825
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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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