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Consolidated Balance Sheets (Unaudited) (Parenthetical) - $ / shares
Sep. 30, 2019
Dec. 31, 2018
Statement Of Financial Position [Abstract]    
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, authorized 250,000,000 250,000,000
Common stock, Issued 32,290,814 25,401,479
Common stock, outstanding 32,290,814 25,401,479