Federal Home Loan Bank Advances and Other Borrowings - Additional Information (Detail) - USD ($)	Sep. 30, 2025	Jun. 30, 2025
Federal Home Loan Bank, Advances [Line Items]
Federal Home Loan Bank advances	$ 69,124,000	$ 54,124,000
Mortgage loans secured for Federal Home Loan Bank Advances	422,701,000	415,223,000
Seven Advances Under The Banks Home Loan Bank Community Small Business Programmed [Member]
Federal Home Loan Bank, Advances [Line Items]
Federal Home Loan Bank advances	$ 3,624,000
Federal Home Loan Bank advances interest rate range from	0.00%
Federal Reserve Bank Advances [Member] \| Asset Pledged as Collateral [Member]
Federal Home Loan Bank, Advances [Line Items]
Debt Instrument, Face Amount	$ 33,802,000	$ 35,251,000
Federal Reserve Bank Advances [Member] \| Debt Instrument, Redemption, Period One [Member]
Federal Home Loan Bank, Advances [Line Items]
Other borrowings	$ 0
Maximum [Member]
Federal Home Loan Bank, Advances [Line Items]
Federal Home Loan Bank advances interest rate range from	4.93%	4.93%
Minimum [Member]
Federal Home Loan Bank, Advances [Line Items]
Federal Home Loan Bank advances interest rate range from	0.00%	0.00%

Mortgage loans secured for federal home loan banks advances.

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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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Face (par) amount of debt instrument at time of issuance.

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Interest rate of advances made and reported by Federal Home Loan Bank (FHLBank).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The carrying amount as of the balance sheet date for the aggregate of other miscellaneous borrowings owed by the reporting entity.

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