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Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($)
Sep. 30, 2020
Jun. 30, 2020
Statement of Financial Position [Abstract]    
Allowance for doubtful trade accounts receivable $ 10,153 $ 9,917
Preferred stock: Series D, par value $ .01 $ 0.01
Preferred stock: Series D, shares authorized 500,000 500,000
Preferred stock: Series D, shares issued 0 0
Preferred stock: Series D, shares outstanding 0 0
Common stock: Class A, par value $ .01 $ 0.01
Common stock: Class A, shares authorized 44,500,000 44,500,000
Common stock: Class A, shares issued 26,102,831 25,891,885
Common stock: Class A, shares outstanding 26,102,831 25,891,885