Borrowings - Schedule of Federal Home Loan Bank Advances by Branch of FHLB Bank (Detail) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Principal Amounts	$ 52,268	$ 73,007
Federal Home Loan Bank Advances One [Member]
Principal Amounts	$ 520	$ 21,139
Maturity Dates	2025	2024
Interest Rates	0.00%
Federal Home Loan Bank Advances One [Member] \| Minimum [Member]
Interest Rates		0.00%
Federal Home Loan Bank Advances One [Member] \| Maximum [Member]
Interest Rates		5.53%
Federal Home Loan Bank Advances Two [Member]
Principal Amounts	$ 50,000	$ 520
Maturity Dates	2026	2025
Interest Rates		0.00%
Federal Home Loan Bank Advances Two [Member] \| Minimum [Member]
Interest Rates	4.38%
Federal Home Loan Bank Advances Two [Member] \| Maximum [Member]
Interest Rates	4.75%
Federal Home Loan Bank Advances Three [Member]
Principal Amounts	$ 718	$ 50,000
Maturity Dates	2028	2026
Interest Rates	0.00%
Federal Home Loan Bank Advances Three [Member] \| Minimum [Member]
Interest Rates		4.38%
Federal Home Loan Bank Advances Three [Member] \| Maximum [Member]
Interest Rates		4.48%
Federal Home Loan Bank Advances Four [Member]
Principal Amounts	$ 400	$ 718
Maturity Dates	2029	2028
Interest Rates	0.00%	0.00%
Federal Home Loan Bank Advances Five [Member]
Principal Amounts	$ 200	$ 200
Maturity Dates	2030	2030
Interest Rates	0.00%	0.00%
Federal Home Loan Bank Advances Six [Member]
Principal Amounts	$ 430	$ 430
Maturity Dates	2031	2031
Interest Rates	0.00%	0.00%

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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- Definition

The year of maturity, when only one maturity date applies, for the advances from the Federal Home Loan Bank as of the Balance Sheet date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 470
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478878/942-470-45-1

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-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477734/942-470-50-3

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- Definition

States the interest rate applicable to Federal Home Loan Bank advances outstanding as of the Balance Sheet date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 470
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478878/942-470-45-1

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-Section 50
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477734/942-470-50-3

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