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Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($)
Dec. 31, 2018
Jun. 30, 2018
Statement of Financial Position [Abstract]    
Accounts receivable, allowance for doubtful accounts $ 3,080,328 $ 1,682,228
Other receivables, allowance for doubtful accounts $ 145,186 $ 145,176
Preferred stock, shares authorized 2,000,000 2,000,000
Preferred stock, par value
Preferred stock, shares issued
Common stock, shares authorized 50,000,000 50,000,000
Common stock, par value
Common stock, shares issued 15,421,200 13,271,032
Common stock, shares outstanding 15,245,703 13,095,535
Treasury stock, shares 175,497 175,497