v3.26.1
Loans Receivable - Troubled Debt Restructurings of Loans Receivable (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount $ 28,005 $ 33,930
Payment Deferral    
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount 2,625 22,784
Extended Maturity    
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount 6 0
Term Extension and Payment Delay    
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount 9,339 0
Payment Delay and Interest Rate Reduction    
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount 15,339 11,146
Term Extension and Interest Rate Reduction    
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount 696 0
Commercial Loan | Multi-family mortgage    
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount $ 27,082 $ 33,717
Financing receivable, excluding accrued interest, modified in period, to total financing receivables, percent 1.08% 1.24%
Commercial Loan | Multi-family mortgage | Payment Deferral    
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount $ 2,404 $ 22,571
Commercial Loan | Multi-family mortgage | Extended Maturity    
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount 0 0
Commercial Loan | Multi-family mortgage | Term Extension and Payment Delay    
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount 9,339 0
Commercial Loan | Multi-family mortgage | Payment Delay and Interest Rate Reduction    
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount 15,339 11,146
Commercial Loan | Multi-family mortgage | Term Extension and Interest Rate Reduction    
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount 0 0
Commercial Loan | Nonresidential mortgage    
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount   $ 169
Financing receivable, excluding accrued interest, modified in period, to total financing receivables, percent   0.02%
Commercial Loan | Nonresidential mortgage | Payment Deferral    
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount   $ 169
Commercial Loan | Nonresidential mortgage | Extended Maturity    
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount   0
Commercial Loan | Nonresidential mortgage | Term Extension and Payment Delay    
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount   0
Commercial Loan | Nonresidential mortgage | Payment Delay and Interest Rate Reduction    
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount   0
Commercial Loan | Nonresidential mortgage | Term Extension and Interest Rate Reduction    
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount   0
Commercial Loan | Commercial and industrial    
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount $ 696  
Financing receivable, excluding accrued interest, modified in period, to total financing receivables, percent 0.31%  
Commercial Loan | Commercial and industrial | Payment Deferral    
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount $ 0  
Commercial Loan | Commercial and industrial | Extended Maturity    
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount 0  
Commercial Loan | Commercial and industrial | Term Extension and Payment Delay    
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount 0  
Commercial Loan | Commercial and industrial | Payment Delay and Interest Rate Reduction    
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount 0  
Commercial Loan | Commercial and industrial | Term Extension and Interest Rate Reduction    
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount 696  
One- to four-family residential mortgage | Commercial and industrial    
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount   $ 44
Financing receivable, excluding accrued interest, modified in period, to total financing receivables, percent   0.03%
One- to four-family residential mortgage | Commercial and industrial | Payment Deferral    
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount   $ 44
One- to four-family residential mortgage | Commercial and industrial | Extended Maturity    
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount   0
One- to four-family residential mortgage | Commercial and industrial | Term Extension and Payment Delay    
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount   0
One- to four-family residential mortgage | Commercial and industrial | Payment Delay and Interest Rate Reduction    
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount   0
One- to four-family residential mortgage | Commercial and industrial | Term Extension and Interest Rate Reduction    
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount   $ 0
One- to four-family residential mortgage | Home equity loans    
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount $ 227  
Financing receivable, excluding accrued interest, modified in period, to total financing receivables, percent 0.01%  
One- to four-family residential mortgage | Home equity loans | Payment Deferral    
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount $ 221  
One- to four-family residential mortgage | Home equity loans | Extended Maturity    
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount 6  
One- to four-family residential mortgage | Home equity loans | Term Extension and Payment Delay    
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount 0  
One- to four-family residential mortgage | Home equity loans | Payment Delay and Interest Rate Reduction    
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount 0  
One- to four-family residential mortgage | Home equity loans | Term Extension and Interest Rate Reduction    
Financing Receivable Modifications [Line Items]    
Financing receivable, excluding accrued interest, modified in period, amount $ 0