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Loans Receivable - Performance Status of Loans Receivable (Details) - USD ($) $ in Thousands | Jun. 30, 2023 | Jun. 30, 2022
--- | --- | ---
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | $ 5,850,476 | $ 5,436,576
Commercial loans |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 4,103,819 | 3,745,866
Residential mortgage |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 1,700,559 | 1,645,816
Consumer loans |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 46,098 | 44,894
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 | 19,212 | 25,026
Nonaccrual Loans with no Allowance for Credit Losses | 23,415 | 45,295
Financing receivable, before allowance for credit loss, fee and loan in process | 42,627 | 70,321
Nonperforming | Residential mortgage |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
90 Days and Over Past Due Accruing | 0 | 0
Nonaccrual Loans with Allowance for Credit Losses | 1,640 | 3,543
Nonaccrual Loans with no Allowance for Credit Losses | 5,031 | 4,946
Financing receivable, before allowance for credit loss, fee and loan in process | 6,671 | 8,489
Performing |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 5,807,849 | 5,366,255
Performing | Residential mortgage |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 1,693,888 | 1,637,327
Multi-family mortgage | Commercial loans |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 2,761,775 | 2,409,090
Multi-family mortgage | Nonperforming | Commercial loans |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
90 Days and Over Past Due Accruing | 0 | 0
Nonaccrual Loans with Allowance for Credit Losses | 5,686 | 8,367
Nonaccrual Loans with no Allowance for Credit Losses | 13,428 | 18,286
Financing receivable, before allowance for credit loss, fee and loan in process | 19,114 | 26,653
Multi-family mortgage | Performing | Commercial loans |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 2,742,661 | 2,382,437
Nonresidential mortgage | Commercial loans |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 968,574 | 1,019,838
Nonresidential mortgage | Nonperforming | Commercial loans |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
90 Days and Over Past Due Accruing | 0 | 0
Nonaccrual Loans with Allowance for Credit Losses | 11,815 | 12,602
Nonaccrual Loans with no Allowance for Credit Losses | 4,725 | 19,292
Financing receivable, before allowance for credit loss, fee and loan in process | 16,540 | 31,894
Nonresidential mortgage | Performing | Commercial loans |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 952,034 | 987,944
Commercial business | Commercial loans |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 146,861 | 176,807
Commercial business | Nonperforming | Commercial loans |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
90 Days and Over Past Due Accruing | 0 | 0
Nonaccrual Loans with Allowance for Credit Losses | 71 | 212
Nonaccrual Loans with no Allowance for Credit Losses | 181 | 81
Financing receivable, before allowance for credit loss, fee and loan in process | 252 | 293
Commercial business | Performing | Commercial loans |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 146,609 | 176,514
Construction | Commercial loans |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 226,609 | 140,131
Construction | Nonperforming | Commercial loans |  |
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 | 1,561
Financing receivable, before allowance for credit loss, fee and loan in process | 0 | 1,561
Construction | Performing | Commercial loans |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 226,609 | 138,570
Home equity loans | Consumer loans |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 43,549 | 42,028
Home equity loans | Nonperforming | Consumer loans |  |
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 | 302
Nonaccrual Loans with no Allowance for Credit Losses | 50 | 1,129
Financing receivable, before allowance for credit loss, fee and loan in process | 50 | 1,431
Home equity loans | Performing | Consumer loans |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 43,499 | 40,597
Other consumer | Consumer loans |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | 2,549 | 2,866
Other consumer | Nonperforming | Consumer loans |  |
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 loans |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, before allowance for credit loss, fee and loan in process | $ 2,549 | $ 2,866

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