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Consolidated Balance Sheets (Unaudited) (Parenthetical) - $ / shares
Sep. 30, 2019
Dec. 31, 2018
Preferred stock, par value $ 0.001 $ 0.001
Preferred stock, shares authorized 5,000,000 5,000,000
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0
Common stock, par value $ 0.001 $ 0.001
Common stock, shares authorized 200,000,000 135,000,000
Common stock, shares issued 23,340,419 2,791,764
Common stock, shares outstanding 22,557,871 1,587,953
Treasury stock, shares 0 67,024
Series A Convertible Preferred Stock    
Convertible preferred stock, par value $ 0.001 $ 0.001
Convertible preferred stock, share authorized 0 60,000,000
Convertible preferred stock, share issued 0 60,000,000
Convertible preferred stock, share outstanding 0 60,000,000
Series B Convertible Preferred Stock    
Convertible preferred stock, par value $ 0.001 $ 0.001
Convertible preferred stock, share authorized 0 40,000,000
Convertible preferred stock, share issued 0 40,000,000
Convertible preferred stock, share outstanding 0 40,000,000