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LOANS RECEIVABLE - Schedule of Loans Receivable (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2024 | Jun. 30, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | $ 5,786,205 | $ 5,748,750
Unaccreted yield adjustments | (1,959) | (15,963)
Loans receivable | 5,784,246 | 5,732,787
Revolving loans, writeoff | 0 | 0
Originated three years before current fiscal year, writeoff | 0 | 3,391
Originated four years before current fiscal year, writeoff | 0 | 464
Commercial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 3,970,269 | 3,945,910
Commercial | Multi-family mortgage |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 2,646,187 | 2,645,851
Revolving loans, writeoff | 0 |
Originated three years before current fiscal year, writeoff | 0 |
Originated four years before current fiscal year, writeoff | 0 |
Commercial | Nonresidential mortgage |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 950,771 | 948,075
Revolving loans, writeoff | 0 |
Originated three years before current fiscal year, writeoff | 0 |
Originated four years before current fiscal year, writeoff | 0 |
Commercial | Commercial business |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 145,984 | 142,747
Revolving loans, writeoff | 0 |
Originated three years before current fiscal year, writeoff | 0 | 3,391
Originated four years before current fiscal year, writeoff | 0 | 464
Commercial | Construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 227,327 | 209,237
Residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 1,768,230 | 1,756,051
Revolving loans, writeoff | 0 |
Originated three years before current fiscal year, writeoff | 0 |
Originated four years before current fiscal year, writeoff | 0 |
Consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 47,706 | 46,789
Consumer | Home equity loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 44,741 | 44,104
Consumer | Other consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | $ 2,965 | $ 2,685

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