v3.26.1
Borrowings (Details) - USD ($)
12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Discount window facility is with FHLB and Federal Reserve Bank of San Francisco    
Collateral pledged on Federal Home Loan Bank advances $ 641,300,000 $ 734,400,000
Investment securities - held to maturity, at cost with no allowance for credit losses 89,251,000 109,399,000
Borrowings - Finance lease liabilities 46,000 73,000
Total borrowings 157,046,000 213,073,000
Mortgage Loans on Real Estate    
Discount window facility is with FHLB and Federal Reserve Bank of San Francisco    
Collateral pledged on Federal Home Loan Bank advances 641,300,000 734,400,000
Federal Home Loan Bank Advances    
Discount window facility is with FHLB and Federal Reserve Bank of San Francisco    
FHLB - San Francisco advances 157,000,000 213,000,000
Federal Home Loan Bank advances, unused borrowing facility 255,900,000 282,300,000
Borrowings - Finance lease liabilities 46,000 73,000
Federal funds facility    
Discount window facility is with FHLB and Federal Reserve Bank of San Francisco    
Federal Home Loan Bank advances, Maximum borrowing capacity 50,000,000 50,000,000
Federal Reserve Bank of San Francisco | Discount window facility    
Discount window facility is with FHLB and Federal Reserve Bank of San Francisco    
Federal Home Loan Bank advances, Maximum borrowing capacity 187,500,000 142,500,000
Advances outstanding 0 0
Federal Reserve Bank of San Francisco | Federal funds facility    
Discount window facility is with FHLB and Federal Reserve Bank of San Francisco    
Federal Home Loan Bank advances, Maximum borrowing capacity 50,000,000 50,000,000
Advances outstanding 0 0
Federal home loan - Bank of San Francisco    
Discount window facility is with FHLB and Federal Reserve Bank of San Francisco    
Federal Home Loan Bank advances, Maximum borrowing capacity 426,100,000 504,100,000
FHLB - San Francisco advances 157,000,000 213,000,000
Federal Home Loan Bank advances, unused borrowing facility 255,900,000 282,300,000
Federal Home Loan Bank stock, required investment 9,600,000 9,600,000
Federal Home Loan Bank stock, excess investment 0 0
Purchase of FHLB - San Francisco stock 0 0
Federal Home Loan Bank stock, cash dividends distributed 1,100,000 835,000
Federal home loan - Bank of San Francisco | Letters of credit    
Discount window facility is with FHLB and Federal Reserve Bank of San Francisco    
Outstanding letters of credit 13,000,000 8,500,000
Federal home loan - Bank of San Francisco | MPF credit enhancement    
Discount window facility is with FHLB and Federal Reserve Bank of San Francisco    
Advances outstanding $ 216,000 $ 216,000
Federal home loan - Bank of San Francisco | Maximum    
Discount window facility is with FHLB and Federal Reserve Bank of San Francisco    
Federal Home Loan Bank advances, limit on borrowing capacity (percent of total assets) 35.00% 40.00%
Federal Home Loan Bank Advances | Pledged as Collateral    
Discount window facility is with FHLB and Federal Reserve Bank of San Francisco    
Investment securities - held to maturity, at cost with no allowance for credit losses $ 4,200,000 $ 4,700,000
Federal Reserve Bank advances | Pledged as Collateral    
Discount window facility is with FHLB and Federal Reserve Bank of San Francisco    
Investment securities - held to maturity, at cost with no allowance for credit losses 18,800,000 24,800,000
Loans held for investment, current $ 300,400,000 $ 227,000,000