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Federal Income Taxes (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 1997
Federal Income Taxes (Textual)      
Effective income tax rate reconciliation special bad debt deduction     8.00%
Retained earnings for which federal income taxes have not been provided $ 5,200    
Amount of unrecognized deferred tax liability relating to the cumulative bad debt deduction 1,300    
Income tax deduction 509    
Deferred tax liability 816 $ 443  
Recognized tax benefit 141 $ (37)  
Loss carryforward $ 4,304    
Loss carryforward expires beginning Jun. 30, 2032