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Borrowings - FHLB Advances (Details) - USD ($)
12 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Discount window facility is with FHLB and Federal Reserve Bank of San Francisco    
Purchase of FHLB - San Francisco stock $ 1,266,000 $ 84,000
Federal Home Loan Bank Advances    
Discount window facility is with FHLB and Federal Reserve Bank of San Francisco    
Advances from Federal Home Loan Banks 235,009,000 85,000,000
FHLB - San Francisco    
Discount window facility is with FHLB and Federal Reserve Bank of San Francisco    
Purchase of FHLB - San Francisco stock 1,300,000 84,000
Advances from Federal Home Loan Banks $ 235,000,000.0 $ 85,000,000.0