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Significant Accounting Policies (Accounts Receivable) (Details) - USD ($)
12 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2017
Accounting Policies [Abstract]      
Allowance for Doubtful Accounts Receivable $ 110,507 $ 118,930 $ 172,120
Allowance for Doubtful Accounts Receivable, Recoveries (5,450) (45,593)  
Allowance for Doubtful Accounts Receivable, Write-offs $ (2,973) $ (7,597)