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Borrowings - FHLB Advances (Details)
12 Months Ended
Jun. 30, 2025
USD ($)
item
Jun. 30, 2024
USD ($)
item
Federal Home Loan Bank, Advances [Line Items]    
Borrowings from Federal Home Loan Bank $ 15,000,000 $ 13,000,000
Federal Home Loan Bank, Advances, Activity for Year [Abstract]    
Balance at end of year 15,000,000 13,000,000
Maximum outstanding at any month end $ 15,000,000 $ 23,000,000
Weighted average interest rate at end of year 3.66% 4.19%
Average interest rate during year 3.86% 3.84%
Borrowings, Available Borrowing Capacity $ 54,800,000  
Federal Funds Purchased 5,000,000  
Term Advance Maturing August 21, 2024    
Federal Home Loan Bank, Advances [Line Items]    
Borrowings from Federal Home Loan Bank   $ 3,000,000
Term of borrowings   6 months
Five Year Term Callable Putable Advances    
Federal Home Loan Bank, Advances [Line Items]    
Borrowings from Federal Home Loan Bank $ 5,000,000 $ 5,000,000
Term of borrowings 5 years 5 years
Number Of Puttable Advances | item 3 2
Asset Pledged as Collateral with Right    
Federal Home Loan Bank, Advances, Activity for Year [Abstract]    
Pledged amount $ 1,329,413 $ 1,329,413
Borrowings, Available Borrowing Capacity 17,487,584,000,000  
Short-term Debt 0  
Asset Not Pledged as Collateral and Asset Pledged as Collateral without Right    
Federal Home Loan Bank, Advances, Activity for Year [Abstract]    
Eligible collateral $ 70,573,734 $ 92,177,419
Minimum    
Federal Home Loan Bank, Advances, Activity for Year [Abstract]    
Discount factor 24.00%  
Maximum    
Federal Home Loan Bank, Advances, Activity for Year [Abstract]    
Discount factor 38.00%