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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%

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- Definition 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. + 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 + Details
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