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Investment Securities (Tables)
3 Months Ended
Sep. 30, 2025
Investment Securities [Abstract]  
Schedule of Cost, Gross Unrealized Gains, Gross Unrealized Losses and Fair Value of Available-For-Sale Debt Securities The cost, gross unrealized gains, gross unrealized losses and fair value of available-for-sale debt securities by major security type at September 30, 2025 and June 30, 2025 are as follows:
       Gross   Gross     
   Amortized   Unrealized   Unrealized   Fair 
   Cost   Gains   Losses   Value 
September 30, 2025                
Certificates of deposit  $23,583,000   $
   $
   $23,583,000 
Municipal bonds   1,086,293    19,180    
    1,105,473 
Total investment securities  $24,669,293   $19,180   $
   $24,688,473 
                     
June 30, 2025                    
Certificates of deposit  $23,539,000   $
   $
   $23,539,000 
Municipal bonds   1,163,567    14,678    
    1,178,245 
Total investment securities  $24,702,567   $14,678   $
   $24,717,245 
Schedule of Contractual Maturities of Available-for-Sale Debt Securities

As of September 30, 2025 and June 30, 2025, the remaining contractual maturities of available-for-sale debt securities were as follows:

 

   Years to Maturity     
   Less than   One to     
   One Year   Five Years   Total 
September 30, 2025               
Available-for-sale  $23,606,976   $1,081,497   $24,688,473 
                
June 30, 2025               
Available-for-sale  $22,933,933   $1,783,312   $24,717,245