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Loans and Allowance for Credit Losses - Nonaccrual with no Allowance for Credit Losses and Nonaccrual Loans (Detail) - USD ($) $ in Thousands | Sep. 30, 2025 | Jun. 30, 2025
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Mortgages on real estate: |  |
Nonaccrual with no Allowance for Credit Losses | $ 880 | $ 0
Nonaccrual | 895 | 17
One- to four-family [Member] |  |
Mortgages on real estate: |  |
Nonaccrual with no Allowance for Credit Losses | 254 | 0
Nonaccrual | 254 | 0
Multi-family [Member] |  |
Mortgages on real estate: |  |
Nonaccrual with no Allowance for Credit Losses | 0 | 0
Nonaccrual | 0 | 0
Home equity lines of credit [Member] |  |
Mortgages on real estate: |  |
Nonaccrual with no Allowance for Credit Losses | 0 | 0
Nonaccrual | 0 | 0
Construction loans [Member] |  |
Mortgages on real estate: |  |
Nonaccrual with no Allowance for Credit Losses | 0 | 0
Nonaccrual | 0 | 0
Consumer loans [Member] |  |
Mortgages on real estate: |  |
Nonaccrual with no Allowance for Credit Losses | 0 | 0
Nonaccrual | 15 | 17
Commercial [Member] |  |
Mortgages on real estate: |  |
Nonaccrual with no Allowance for Credit Losses | 626 | 0
Nonaccrual | 626 | 0
Commercial business loans [Member] |  |
Mortgages on real estate: |  |
Nonaccrual with no Allowance for Credit Losses | 0 | 0
Nonaccrual | $ 0 | $ 0

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