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Other Comprehensive Income (Details) - USD ($)
12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance, at beginning $ 20,782,335 $ 20,139,787
Balance, at ending 29,849,151 20,782,335
Accumulated Other Comprehensive Income (Loss)    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance, at beginning 66,725 (157,954)
Other comprehensive gain (loss) before reclassifications (net of tax) (74,130) 196,326
Amortization of amounts transferred from debt securities available for sale to held to maturity 128,072 28,353
Balance, at ending 120,667 66,725
Unrealized Gains and Losses on Available for Sale Debt Securities    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance, at beginning 262,688 66,362
Other comprehensive gain (loss) before reclassifications (net of tax) (74,130) 196,326
Balance, at ending 188,558 262,688
Unrealized Losses on Held to Maturity Debt Securities    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance, at beginning (195,963) (224,316)
Amortization of amounts transferred from debt securities available for sale to held to maturity 128,072 28,353
Balance, at ending $ (67,891) $ (195,963)