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Borrowings - FHLB Advances (Details) - USD ($)
12 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Federal Home Loan Bank, Advances [Line Items]    
Borrowings from Federal Home Loan Bank $ 8,000,000 $ 0
Federal Home Loan Bank, Advances, Activity for Year [Abstract]    
Balance at end of year 8,000,000  
Maximum outstanding at any month end $ 14,000,000  
Weighted average interest rate at end of year 2.97%  
Average interest rate during year 3.15%  
Amount of federal home loan bank advance repricing daily $ 5,000,000.0  
Federal Funds Purchased 5,000,000.0  
Federal Home Loan Bank, Advances, Putable Option One [Member]    
Federal Home Loan Bank, Advances [Line Items]    
Borrowings from Federal Home Loan Bank 5,000,000.0  
Federal Home Loan Bank, Advances, Putable Option Two [Member]    
Federal Home Loan Bank, Advances [Line Items]    
Borrowings from Federal Home Loan Bank 3,000,000.0  
Asset Pledged as Collateral with Right [Member]    
Federal Home Loan Bank, Advances, Activity for Year [Abstract]    
Pledged amount 770,273 323,000
Borrowings, Available Borrowing Capacity 25,000,000.0  
Short-term Debt 0  
Asset Not Pledged as Collateral and Asset Pledged as Collateral without Right [Member]    
Federal Home Loan Bank, Advances, Activity for Year [Abstract]    
Eligible collateral $ 95,988,835 $ 37,536,518
Minimum    
Federal Home Loan Bank, Advances, Activity for Year [Abstract]    
Discount factor 22.00%  
Maximum    
Federal Home Loan Bank, Advances, Activity for Year [Abstract]    
Discount factor 37.00%