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Federal Income Taxes (Details) - USD ($)
12 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Federal Income Taxes (Details) [Line Items]    
Retained earnings for which federal income taxes have not been provided $ 5,200,000  
Amount of unrecognized deferred tax liability relating to the cumulative bad debt deduction $ 1,300,000  
Parent [Member]    
Federal Income Taxes (Details) [Line Items]    
Recognized a tax benefit   $ 63,000