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CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - $ / shares
Sep. 30, 2018
Dec. 31, 2017
Statement of Financial Position [Abstract]    
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, authorized 250,000,000 250,000,000
Common stock, issued 35,784,497 33,534,487
Common stock, outstanding 35,784,497 33,534,487