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Investment Securities (Schedule of Contractual Maturities) (Details) - USD ($)
Sep. 30, 2022
Jun. 30, 2022
Contractual maturities of available-for-sale securities    
Less than One Year $ 4,626,334 $ 3,639,000
One to Five Years 787,841 69,779
Fair Value $ 5,414,175 $ 3,708,779