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Loans and Allowance for Credit Losses - Nonaccrual with no Allowance for Credit Losses and Nonaccrual Loans (Detail) - USD ($) $ in Thousands | Dec. 31, 2023 | Jun. 30, 2023
--- | --- | ---
Mortgages on real estate: |  |
Nonaccrual with no Allowance for Credit Losses | $ 0 | $ 0
Nonaccrual | 29 | 117
One- to four-family [Member] |  |
Mortgages on real estate: |  |
Nonaccrual with no Allowance for Credit Losses | 0 | 0
Nonaccrual | 0 | 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 | 0 | 2
Commercial [Member] |  |
Mortgages on real estate: |  |
Nonaccrual with no Allowance for Credit Losses | 0 | 0
Nonaccrual | 0 | 0
Commercial business loans [Member] |  |
Mortgages on real estate: |  |
Nonaccrual with no Allowance for Credit Losses | 0 | 0
Nonaccrual | $ 29 | $ 115

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