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LOANS RECEIVABLE - Performance Status of Loans Receivable (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Jun. 30, 2023
--- | --- | ---
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | $ 5,756,938 | $ 5,850,476
Commercial |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 3,964,628 | 4,103,819
Residential |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 1,746,065 | 1,700,559
Consumer |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 46,245 | 46,098
Nonperforming |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
90 Days and Over Past Due Accruing | 0 | 0
Nonaccrual Loans with Allowance for Credit Losses | 3,138 | 19,212
Nonaccrual Loans with no Allowance for Credit Losses | 24,951 | 23,415
Financing receivable, before allowance for credit loss, fee and loan in process | 28,089 | 42,627
Nonperforming | Residential |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
90 Days and Over Past Due Accruing | 0 | 0
Nonaccrual Loans with Allowance for Credit Losses | 385 | 1,640
Nonaccrual Loans with no Allowance for Credit Losses | 6,519 | 5,031
Financing receivable, before allowance for credit loss, fee and loan in process | 6,904 | 6,671
Performing |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 5,728,849 | 5,807,849
Performing | Residential |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 1,739,161 | 1,693,888
Multi-family mortgage | Commercial |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 2,651,274 | 2,761,775
Multi-family mortgage | Nonperforming | Commercial |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
90 Days and Over Past Due Accruing | 0 | 0
Nonaccrual Loans with Allowance for Credit Losses | 1,939 | 5,686
Nonaccrual Loans with no Allowance for Credit Losses | 14,049 | 13,428
Financing receivable, before allowance for credit loss, fee and loan in process | 15,988 | 19,114
Multi-family mortgage | Performing | Commercial |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 2,635,286 | 2,742,661
Nonresidential mortgage | Commercial |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 947,287 | 968,574
Nonresidential mortgage | Nonperforming | Commercial |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
90 Days and Over Past Due Accruing | 0 | 0
Nonaccrual Loans with Allowance for Credit Losses | 0 | 11,815
Nonaccrual Loans with no Allowance for Credit Losses | 4,335 | 4,725
Financing receivable, before allowance for credit loss, fee and loan in process | 4,335 | 16,540
Nonresidential mortgage | Performing | Commercial |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 942,952 | 952,034
Commercial business | Commercial |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 144,134 | 146,861
Commercial business | Nonperforming | Commercial |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
90 Days and Over Past Due Accruing | 0 | 0
Nonaccrual Loans with Allowance for Credit Losses | 814 | 71
Nonaccrual Loans with no Allowance for Credit Losses | 1 | 181
Financing receivable, before allowance for credit loss, fee and loan in process | 815 | 252
Commercial business | Performing | Commercial |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 143,319 | 146,609
Construction | Commercial |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 221,933 | 226,609
Construction | Nonperforming | Commercial |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
90 Days and Over Past Due Accruing | 0 | 0
Nonaccrual Loans with Allowance for Credit Losses | 0 | 0
Nonaccrual Loans with no Allowance for Credit Losses | 0 | 0
Financing receivable, before allowance for credit loss, fee and loan in process | 0 | 0
Construction | Performing | Commercial |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 221,933 | 226,609
Home equity loans | Consumer |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 43,517 | 43,549
Home equity loans | Nonperforming | Consumer |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
90 Days and Over Past Due Accruing | 0 | 0
Nonaccrual Loans with Allowance for Credit Losses | 0 | 0
Nonaccrual Loans with no Allowance for Credit Losses | 47 | 50
Financing receivable, before allowance for credit loss, fee and loan in process | 47 | 50
Home equity loans | Performing | Consumer |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 43,470 | 43,499
Other consumer | Consumer |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 2,728 | 2,549
Other consumer | Nonperforming | Consumer |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
90 Days and Over Past Due Accruing | 0 | 0
Nonaccrual Loans with Allowance for Credit Losses | 0 | 0
Nonaccrual Loans with no Allowance for Credit Losses | 0 | 0
Financing receivable, before allowance for credit loss, fee and loan in process | 0 | 0
Other consumer | Performing | Consumer |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | $ 2,728 | $ 2,549

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