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Nature of Operations and Summary of Significant Accounting Policies - Additional Information (Detail) $ in Thousands | 12 Months Ended
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Jun. 30, 2025 USD ($) Banking_Office segment | Jun. 30, 2024 USD ($)
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items] |  |
Number of full service banking offices | Banking_Office | 7 |
Liquid investments with original maturity period | 3 months |
Accrual of interest on loans due discontinued period, in days | 90 days |
Percentage of minimum likelihood of realized tax benefit upon settlement | 50.00% |
Cash, Uninsured Amount | $ 4,100 |
Federal home loan bank stock and federal reserve bank stock | 7,600 |
Long-Lived Asset Impairment | $ 0 | $ 0
Number of Reportable Segments | segment | 1 |
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description | The CODM allocates resources and assesses the performance of the Company based on the consolidated performance, excluding all significant intercompany balances and transactions, of the Company and its wholly owned subsidiaries and does not significantly utilize disaggregated segment financial information for decision making and resource allocation |

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