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Borrowings - FHLB Advances (Details)
12 Months Ended
Jun. 30, 2024
USD ($)
item
Jun. 30, 2023
USD ($)
Federal Home Loan Bank, Advances [Line Items]    
Borrowings from Federal Home Loan Bank $ 13,000,000 $ 8,000,000
Federal Home Loan Bank, Advances, Activity for Year [Abstract]    
Balance at end of year 13,000,000 8,000,000
Maximum outstanding at any month end $ 23,000,000 $ 14,000,000
Weighted average interest rate at end of year 4.19% 2.97%
Average interest rate during year 3.84% 3.15%
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
Term Advance Maturing August 21, 2024    
Federal Home Loan Bank, Advances [Line Items]    
Borrowings from Federal Home Loan Bank $ 3,000,000.0  
Term of borrowings 6 months  
Five Year Term Callable Putable Advances    
Federal Home Loan Bank, Advances [Line Items]    
Borrowings from Federal Home Loan Bank $ 5,000,000.0  
Term of borrowings 5 years  
Number Of Puttable Advances | item 2  
Asset Pledged as Collateral with Right [Member]    
Federal Home Loan Bank, Advances, Activity for Year [Abstract]    
Pledged amount $ 1,329,413 770,273
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 $ 92,177,419 $ 95,988,835
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%