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Loans Receivable - Schedule of Loans Receivable (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Jun. 30, 2023
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | $ 5,748,750 | $ 5,850,476
Unaccreted yield adjustments | (15,963) | (21,055)
Total loans receivable, net of yield adjustments | 5,732,787 | 5,829,421
Commercial loans: |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 3,945,910 | 4,103,819
Commercial loans: | Multi-family mortgage |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 2,645,851 | 2,761,775
Commercial loans: | Nonresidential mortgage |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 948,075 | 968,574
Commercial loans: | Commercial business |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 142,747 | 146,861
Commercial loans: | Construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 209,237 | 226,609
One- to four-family residential mortgage |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 1,756,051 | 1,700,559
Consumer loans: |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 46,789 | 46,098
Consumer loans: | Home equity loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 44,104 | 43,549
Consumer loans: | Other consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | $ 2,685 | $ 2,549

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