v3.25.2
Loans Receivable and ACL Text Tag (Details)
 12 Months Ended
Mar. 31, 2025
USD ($)
Mar. 31, 2024
USD ($)
Mar. 31, 2023
USD ($)
Financing Receivable, Modifications [Line Items]      
Financing Receivable, Modifications, Number of Contracts 0 0  
Financing Receivable, Modifications, Recorded Investment $ 6,000,000.0    
FNMA & 3rd party loans excluded from financial statements 10,700,000 $ 11,600,000  
Other non-performing asset $ 52,000 $ 52,000  
Number of Real Estate Properties 1 1  
Loans held-for-sale (HFS) $ 0 $ 0  
Loans 90 Days Past Due and Still Accruing 0    
Loans and Leases Receivable, Related Parties 0    
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Financing Receivable, Purchase 15,400,000 31,500,000  
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums 2,600,000 2,900,000  
Financing Receivable, Nonaccrual, Interest Income 0    
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest 6,337,000 5,871,000 $ 5,229,000
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default $ 0 0  
Performing      
Financing Receivable, Modifications [Line Items]      
Financing Receivable, Modifications, Number of Contracts 3    
Financing Receivable, Modifications, Recorded Investment $ 5,700,000    
Financing Receivable      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged 50,400,000    
Multifamily      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest 820,000 720,000 1,109,000
Commercial real estate      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest 1,465,000 1,222,000 1,814,000
Business      
Financing Receivable, Modifications [Line Items]      
Overdrafts 50,000 73,000  
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Overdrafts 50,000 73,000  
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest 1,646,000 1,415,000 1,139,000
Consumer      
Financing Receivable, Modifications [Line Items]      
Overdrafts 18,000 15,000  
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Overdrafts 18,000 15,000  
Financing Receivable, Purchase   11,300,000  
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest 593,000 450,000 449,000
One-to-four family      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Financing Receivable, Purchase   20,000,000.0  
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest 1,799,000 $ 2,005,000 $ 716,000
Non-performing      
Financing Receivable, Modifications [Line Items]      
Financing Receivable, Modifications, Recorded Investment $ 389,000