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Investment Securities (Schedule of Investment Securities) (Details) - USD ($)
Jun. 30, 2022
Jun. 30, 2021
Amortized Cost $ 3,711,225 $ 3,092,000
Gross Unrealized Gains
Gross Unrealized Losses (2,446)
Fair Value 3,708,779 3,092,000
Certificates of deposit [Member]    
Amortized Cost 3,639,000 3,092,000
Gross Unrealized Gains
Gross Unrealized Losses
Fair Value 3,639,000 3,092,000
Municipal bonds [Member]    
Amortized Cost 72,225
Gross Unrealized Gains
Gross Unrealized Losses (2,446)
Fair Value $ 69,779