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CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
Sep. 30, 2018
Sep. 30, 2017
Preferred stock, shares authorized 10,000,000 10,000,000
Preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, shares authorized 75,000,000 75,000,000
Common stock, shares issued 18,937,050 18,879,580
Treasury stock, shares 2,096,451 2,096,451
Class A Convertible stock    
Preferred stock, shares authorized 200,000 200,000