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LOANS RECEIVABLE - Performance Status of Loans Receivable (Details) - USD ($) $ in Thousands | Mar. 31, 2026 | Jun. 30, 2025
--- | --- | ---
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | $ 5,781,244 | $ 5,814,539
Commercial |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 3,976,465 | 4,012,678
Residential |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 1,741,023 | 1,748,591
Consumer |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 63,756 | 53,270
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 | 10,323 | 20,847
Nonaccrual Loans with no Allowance for Credit Losses | 42,056 | 24,750
Financing receivable, before allowance for credit loss, fee and loan in process | 52,379 | 45,597
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 | 1,232 | 2,862
Nonaccrual Loans with no Allowance for Credit Losses | 3,864 | 3,688
Financing receivable, before allowance for credit loss, fee and loan in process | 5,096 | 6,550
Performing |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 5,728,865 | 5,768,942
Performing | Residential |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 1,735,927 | 1,742,041
Multi-family mortgage | Commercial |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 2,555,001 | 2,709,654
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 | 8,802 | 15,867
Nonaccrual Loans with no Allowance for Credit Losses | 29,314 | 14,990
Financing receivable, before allowance for credit loss, fee and loan in process | 38,116 | 30,857
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 | 2,516,885 | 2,678,797
Nonresidential mortgage | Commercial |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 1,012,422 | 986,556
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 | 0
Nonaccrual Loans with no Allowance for Credit Losses | 5,679 | 5,763
Financing receivable, before allowance for credit loss, fee and loan in process | 5,679 | 5,763
Nonresidential mortgage | Performing | Commercial |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 1,006,743 | 980,793
Commercial business | Commercial |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 201,277 | 138,755
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 | 206 | 1,930
Nonaccrual Loans with no Allowance for Credit Losses | 330 | 293
Financing receivable, before allowance for credit loss, fee and loan in process | 536 | 2,223
Commercial business | Performing | Commercial |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 200,741 | 136,532
Construction | Commercial |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 207,765 | 177,713
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 | 2,755 | 0
Financing receivable, before allowance for credit loss, fee and loan in process | 2,755 | 0
Construction | Performing | Commercial |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 205,010 | 177,713
Home equity loans | Consumer |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 61,379 | 50,737
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 | 83 | 188
Nonaccrual Loans with no Allowance for Credit Losses | 114 | 16
Financing receivable, before allowance for credit loss, fee and loan in process | 197 | 204
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 | 61,182 | 50,533
Other consumer | Consumer |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 2,377 | 2,533
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 | $ 2,377 | $ 2,533

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