v3.26.1
Fair Value of Financial Instruments - Schedule of Assets and Liabilities Measured at Fair Value on a Non-recurring Basis (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Jun. 30, 2025
Fair Value, Measurements, Nonrecurring    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Assets, fair value $ 17,386 $ 21,082
Fair Value, Measurements, Nonrecurring | Commercial Loan | Multi-family mortgage    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Net loans receivable 17,386 16,385
Fair Value, Measurements, Nonrecurring | Commercial Loan | Nonresidential mortgage    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Net loans receivable   4,697
Assets, fair value 5,519  
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Measurements, Nonrecurring    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Assets, fair value 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Measurements, Nonrecurring | Commercial Loan | Multi-family mortgage    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Net loans receivable 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Measurements, Nonrecurring | Commercial Loan | Nonresidential mortgage    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Net loans receivable   0
Assets, fair value 0  
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Nonrecurring    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Assets, fair value 0 0
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Nonrecurring | Commercial Loan | Multi-family mortgage    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Net loans receivable 0 0
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Nonrecurring | Commercial Loan | Nonresidential mortgage    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Net loans receivable   0
Assets, fair value 0  
Significant Unobservable Inputs (Level 3)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Net loans receivable 17,386  
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Nonrecurring    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Net loans receivable   21,082
Assets, fair value 17,386 21,082
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Nonrecurring | Commercial Loan | Multi-family mortgage    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Net loans receivable 17,386 16,385
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Nonrecurring | Commercial Loan | Nonresidential mortgage    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Net loans receivable   $ 4,697
Assets, fair value $ 5,519