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Loans Receivable - Troubled Debt Restructurings of Loans Receivable (Details) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Dec. 31, 2022 USD ($) numberOfLoans Loan | Dec. 31, 2021 USD ($) Loan | Dec. 31, 2022 USD ($) Loan numberOfLoans | Dec. 31, 2021 USD ($) Loan | Jun. 30, 2022 USD ($) numberOfLoans
Financing Receivable Modifications [Line Items] |  |  |  |  |
Number of Loans | numberOfLoans | 63 |  | 63 |  | 68
Amount | $ 18,373 |  | $ 18,373 |  | $ 22,184
Number of TDR defaults | Loan | 2 | 2 | 4 | 3 |
Pre-modification outstanding recorded investment | $ 280 | $ 261 | $ 750 | $ 3,248 |
Post-modification outstanding recorded investment | $ 277 | $ 261 | $ 747 | $ 3,233 |
Accrual |  |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |  |
Number of Loans | numberOfLoans | 47 |  | 47 |  | 43
Amount | $ 10,481 |  | $ 10,481 |  | $ 8,672
Non-accrual |  |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |  |
Number of Loans | numberOfLoans | 16 |  | 16 |  | 25
Amount | $ 7,892 |  | $ 7,892 |  | $ 13,512
Commercial Loan |  |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |  |
Number of Loans | numberOfLoans | 11 |  | 11 |  | 16
Amount | $ 9,649 |  | $ 9,649 |  | $ 12,854
Commercial Loan | Accrual |  |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |  |
Number of Loans | numberOfLoans | 7 |  | 7 |  | 9
Amount | $ 3,713 |  | $ 3,713 |  | $ 4,020
Commercial Loan | Non-accrual |  |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |  |
Number of Loans | numberOfLoans | 4 |  | 4 |  | 7
Amount | $ 5,936 |  | $ 5,936 |  | $ 8,834
Commercial Loan | Multi-family mortgage |  |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |  |
Number of Loans | numberOfLoans | 2 |  | 2 |  | 2
Amount | $ 5,539 |  | $ 5,539 |  | $ 5,626
Number of TDR defaults | Loan |  |  | 0 | 1 |
Pre-modification outstanding recorded investment |  |  | $ 0 | $ 2,987 |
Post-modification outstanding recorded investment |  |  | $ 0 | $ 2,972 |
Commercial Loan | Multi-family mortgage | Accrual |  |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |  |
Number of Loans | numberOfLoans | 0 |  | 0 |  | 0
Amount | $ 0 |  | $ 0 |  | $ 0
Commercial Loan | Multi-family mortgage | Non-accrual |  |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |  |
Number of Loans | numberOfLoans | 2 |  | 2 |  | 2
Amount | $ 5,539 |  | $ 5,539 |  | $ 5,626
Commercial Loan | Nonresidential mortgage |  |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |  |
Number of Loans | numberOfLoans | 4 |  | 4 |  | 6
Amount | $ 574 |  | $ 574 |  | $ 1,954
Commercial Loan | Nonresidential mortgage | Accrual |  |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |  |
Number of Loans | numberOfLoans | 3 |  | 3 |  | 4
Amount | $ 184 |  | $ 184 |  | $ 389
Commercial Loan | Nonresidential mortgage | Non-accrual |  |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |  |
Number of Loans | numberOfLoans | 1 |  | 1 |  | 2
Amount | $ 390 |  | $ 390 |  | $ 1,565
Commercial Loan | Commercial business |  |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |  |
Number of Loans | numberOfLoans | 5 |  | 5 |  | 7
Amount | $ 3,536 |  | $ 3,536 |  | $ 3,713
Number of TDR defaults | Loan | 1 | 0 | 1 | 0 |
Pre-modification outstanding recorded investment | $ 7 | $ 0 | $ 7 | $ 0 |
Post-modification outstanding recorded investment | $ 7 | $ 0 | $ 7 | $ 0 |
Commercial Loan | Commercial business | Accrual |  |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |  |
Number of Loans | numberOfLoans | 4 |  | 4 |  | 5
Amount | $ 3,529 |  | $ 3,529 |  | $ 3,631
Commercial Loan | Commercial business | Non-accrual |  |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |  |
Number of Loans | numberOfLoans | 1 |  | 1 |  | 2
Amount | $ 7 |  | $ 7 |  | $ 82
Commercial Loan | Construction |  |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |  |
Number of Loans | numberOfLoans |  |  |  |  | 1
Amount |  |  |  |  | $ 1,561
Commercial Loan | Construction | Accrual |  |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |  |
Number of Loans | numberOfLoans |  |  |  |  | 0
Amount |  |  |  |  | $ 0
Commercial Loan | Construction | Non-accrual |  |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |  |
Number of Loans | numberOfLoans |  |  |  |  | 1
Amount |  |  |  |  | $ 1,561
One-to Four-Family Residential Mortgage |  |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |  |
Number of Loans | numberOfLoans | 46 |  | 46 |  | 45
Amount | $ 8,315 |  | $ 8,315 |  | $ 7,802
Number of TDR defaults | Loan | 1 | 2 | 2 | 2 |
Pre-modification outstanding recorded investment | $ 273 | $ 261 | $ 708 | $ 261 |
Post-modification outstanding recorded investment | $ 270 | $ 261 | $ 705 | $ 261 |
One-to Four-Family Residential Mortgage | Accrual |  |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |  |
Number of Loans | numberOfLoans | 35 |  | 35 |  | 29
Amount | $ 6,394 |  | $ 6,394 |  | $ 4,488
One-to Four-Family Residential Mortgage | Non-accrual |  |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |  |
Number of Loans | numberOfLoans | 11 |  | 11 |  | 16
Amount | $ 1,921 |  | $ 1,921 |  | $ 3,314
Consumer Loans | Home equity loans |  |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |  |
Number of Loans | numberOfLoans | 6 |  | 6 |  | 7
Amount | $ 409 |  | $ 409 |  | $ 1,528
Number of TDR defaults | Loan |  |  | 1 | 0 |
Pre-modification outstanding recorded investment |  |  | $ 35 | $ 0 |
Post-modification outstanding recorded investment |  |  | $ 35 | $ 0 |
Consumer Loans | Home equity loans | Accrual |  |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |  |
Number of Loans | numberOfLoans | 5 |  | 5 |  | 5
Amount | $ 374 |  | $ 374 |  | $ 164
Consumer Loans | Home equity loans | Non-accrual |  |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |  |
Number of Loans | numberOfLoans | 1 |  | 1 |  | 2
Amount | $ 35 |  | $ 35 |  | $ 1,364

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