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Consolidated Balance Sheets (Parenthetical) - USD ($)
Jun. 30, 2017
Jun. 30, 2016
Allowance for doubtful accounts $ 392,250 $ 75,000
Stockholders' equity:    
Preferred stock, par value $ .01 $ .01
Preferred stock, authorized 30,000,000 30,000,000
Common stock, par value $ .01 $ .01
Common stock, authorized 50,000,000 50,000,000
Common stock, issued 19,423,821 19,229,556
Common stock, outstanding 19,423,821 19,229,556
Series B Preferred [Member]    
Stockholders' equity:    
Preferred stock, issued 625,375 625,375
Preferred stock, outstanding 625,375 625,375
Series B-1 Preferred [Member]    
Stockholders' equity:    
Preferred stock, issued 180,213 180,213
Preferred stock, outstanding 180,213 180,213