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Loans Receivable - Troubled Debt Restructurings of Loans Receivable (Details) $ in Thousands | 12 Months Ended
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Jun. 30, 2024 USD ($) | Jun. 30, 2023 USD ($) loan
Financing Receivable Modifications [Line Items] |  |
Financing receivable, Modifications, Accumulated | loan |  | 62
Financing receivable, Modified, Accumulated |  | $ 17,361
Financing receivable, excluding accrued interest, modified in period, amount | $ 4,635 |
Financing receivable, excluding accrued interest, modified in period, to total financing receivables, percent | 0.08% |
# of Loans | loan |  | 6
Pre-modification Recorded Investment |  | $ 1,130
Post-modification Recorded Investment |  | $ 1,159
Payment Deferral |  |
Financing Receivable Modifications [Line Items] |  |
Financing receivable, excluding accrued interest, modified in period, amount | $ 3,779 |
Extended Maturity |  |
Financing Receivable Modifications [Line Items] |  |
Financing receivable, excluding accrued interest, modified in period, amount | 856 |
Performing |  |
Financing Receivable Modifications [Line Items] |  |
Financing receivable, Modifications, Accumulated | loan |  | 54
Financing receivable, Modified, Accumulated |  | $ 10,487
Nonperforming |  |
Financing Receivable Modifications [Line Items] |  |
Financing receivable, Modifications, Accumulated | loan |  | 8
Financing receivable, Modified, Accumulated |  | $ 6,874
Commercial loans: |  |
Financing Receivable Modifications [Line Items] |  |
Financing receivable, Modifications, Accumulated | loan |  | 13
Financing receivable, Modified, Accumulated |  | $ 9,467
Commercial loans: | Performing |  |
Financing Receivable Modifications [Line Items] |  |
Financing receivable, Modifications, Accumulated | loan |  | 9
Financing receivable, Modified, Accumulated |  | $ 3,367
Commercial loans: | Nonperforming |  |
Financing Receivable Modifications [Line Items] |  |
Financing receivable, Modifications, Accumulated | loan |  | 4
Financing receivable, Modified, Accumulated |  | $ 6,100
Commercial loans: | Multi-family mortgage |  |
Financing Receivable Modifications [Line Items] |  |
Financing receivable, Modifications, Accumulated | loan |  | 2
Financing receivable, Modified, Accumulated |  | $ 5,400
Financing receivable, excluding accrued interest, modified in period, amount | $ 2,774 |
Financing receivable, excluding accrued interest, modified in period, to total financing receivables, percent | 0.10% |
Commercial loans: | Multi-family mortgage | Payment Deferral |  |
Financing Receivable Modifications [Line Items] |  |
Financing receivable, excluding accrued interest, modified in period, amount | $ 2,774 |
Commercial loans: | Multi-family mortgage | Extended Maturity |  |
Financing Receivable Modifications [Line Items] |  |
Financing receivable, excluding accrued interest, modified in period, amount | 0 |
Commercial loans: | Multi-family mortgage | Performing |  |
Financing Receivable Modifications [Line Items] |  |
Financing receivable, Modifications, Accumulated | loan |  | 0
Financing receivable, Modified, Accumulated |  | $ 0
Commercial loans: | Multi-family mortgage | Nonperforming |  |
Financing Receivable Modifications [Line Items] |  |
Financing receivable, Modifications, Accumulated | loan |  | 2
Financing receivable, Modified, Accumulated |  | $ 5,400
Commercial loans: | Nonresidential mortgage |  |
Financing Receivable Modifications [Line Items] |  |
Financing receivable, Modifications, Accumulated | loan |  | 5
Financing receivable, Modified, Accumulated |  | $ 870
Financing receivable, excluding accrued interest, modified in period, amount | $ 786 |
Financing receivable, excluding accrued interest, modified in period, to total financing receivables, percent | 0.08% |
# of Loans | loan |  | 1
Pre-modification Recorded Investment |  | $ 313
Post-modification Recorded Investment |  | $ 345
Commercial loans: | Nonresidential mortgage | Payment Deferral |  |
Financing Receivable Modifications [Line Items] |  |
Financing receivable, excluding accrued interest, modified in period, amount | $ 0 |
Commercial loans: | Nonresidential mortgage | Extended Maturity |  |
Financing Receivable Modifications [Line Items] |  |
Financing receivable, excluding accrued interest, modified in period, amount | 786 |
Commercial loans: | Nonresidential mortgage | Performing |  |
Financing Receivable Modifications [Line Items] |  |
Financing receivable, Modifications, Accumulated | loan |  | 3
Financing receivable, Modified, Accumulated |  | $ 170
Commercial loans: | Nonresidential mortgage | Nonperforming |  |
Financing Receivable Modifications [Line Items] |  |
Financing receivable, Modifications, Accumulated | loan |  | 2
Financing receivable, Modified, Accumulated |  | $ 700
Commercial loans: | Commercial business |  |
Financing Receivable Modifications [Line Items] |  |
Financing receivable, Modifications, Accumulated | loan |  | 6
Financing receivable, Modified, Accumulated |  | $ 3,197
Financing receivable, excluding accrued interest, modified in period, amount | $ 45 |
Financing receivable, excluding accrued interest, modified in period, to total financing receivables, percent | 0.03% |
# of Loans | loan |  | 2
Pre-modification Recorded Investment |  | $ 74
Post-modification Recorded Investment |  | $ 74
Commercial loans: | Commercial business | Payment Deferral |  |
Financing Receivable Modifications [Line Items] |  |
Financing receivable, excluding accrued interest, modified in period, amount | $ 45 |
Commercial loans: | Commercial business | Extended Maturity |  |
Financing Receivable Modifications [Line Items] |  |
Financing receivable, excluding accrued interest, modified in period, amount | 0 |
Commercial loans: | Commercial business | Performing |  |
Financing Receivable Modifications [Line Items] |  |
Financing receivable, Modifications, Accumulated | loan |  | 6
Financing receivable, Modified, Accumulated |  | $ 3,197
Commercial loans: | Commercial business | Nonperforming |  |
Financing Receivable Modifications [Line Items] |  |
Financing receivable, Modifications, Accumulated | loan |  | 0
Financing receivable, Modified, Accumulated |  | $ 0
Commercial loans: | Construction |  |
Financing Receivable Modifications [Line Items] |  |
Financing receivable, Modifications, Accumulated | loan |  | 0
Financing receivable, Modified, Accumulated |  | $ 0
Commercial loans: | Construction | Performing |  |
Financing Receivable Modifications [Line Items] |  |
Financing receivable, Modifications, Accumulated | loan |  | 0
Financing receivable, Modified, Accumulated |  | $ 0
Commercial loans: | Construction | Nonperforming |  |
Financing Receivable Modifications [Line Items] |  |
Financing receivable, Modifications, Accumulated | loan |  | 0
Financing receivable, Modified, Accumulated |  | $ 0
One- to four-family residential mortgage |  |
Financing Receivable Modifications [Line Items] |  |
Financing receivable, Modifications, Accumulated | loan |  | 43
Financing receivable, Modified, Accumulated |  | $ 7,526
Financing receivable, excluding accrued interest, modified in period, amount | $ 1,005 |
Financing receivable, excluding accrued interest, modified in period, to total financing receivables, percent | 0.06% |
# of Loans | loan |  | 2
Pre-modification Recorded Investment |  | $ 708
Post-modification Recorded Investment |  | $ 705
One- to four-family residential mortgage | Payment Deferral |  |
Financing Receivable Modifications [Line Items] |  |
Financing receivable, excluding accrued interest, modified in period, amount | $ 960 |
One- to four-family residential mortgage | Extended Maturity |  |
Financing Receivable Modifications [Line Items] |  |
Financing receivable, excluding accrued interest, modified in period, amount | 45 |
One- to four-family residential mortgage | Performing |  |
Financing Receivable Modifications [Line Items] |  |
Financing receivable, Modifications, Accumulated | loan |  | 39
Financing receivable, Modified, Accumulated |  | $ 6,752
One- to four-family residential mortgage | Nonperforming |  |
Financing Receivable Modifications [Line Items] |  |
Financing receivable, Modifications, Accumulated | loan |  | 4
Financing receivable, Modified, Accumulated |  | $ 774
Consumer loans: | Home equity loans |  |
Financing Receivable Modifications [Line Items] |  |
Financing receivable, Modifications, Accumulated | loan |  | 6
Financing receivable, Modified, Accumulated |  | $ 368
Financing receivable, excluding accrued interest, modified in period, amount | $ 25 |
Financing receivable, excluding accrued interest, modified in period, to total financing receivables, percent | 0.06% |
# of Loans | loan |  | 1
Pre-modification Recorded Investment |  | $ 35
Post-modification Recorded Investment |  | $ 35
Consumer loans: | Home equity loans | Payment Deferral |  |
Financing Receivable Modifications [Line Items] |  |
Financing receivable, excluding accrued interest, modified in period, amount | $ 0 |
Consumer loans: | Home equity loans | Extended Maturity |  |
Financing Receivable Modifications [Line Items] |  |
Financing receivable, excluding accrued interest, modified in period, amount | $ 25 |
Consumer loans: | Home equity loans | Performing |  |
Financing Receivable Modifications [Line Items] |  |
Financing receivable, Modifications, Accumulated | loan |  | 6
Financing receivable, Modified, Accumulated |  | $ 368
Consumer loans: | Home equity loans | Nonperforming |  |
Financing Receivable Modifications [Line Items] |  |
Financing receivable, Modifications, Accumulated | loan |  | 0
Financing receivable, Modified, Accumulated |  | $ 0

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