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CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) (Parenthetical) - $ / shares
Jun. 30, 2019
Dec. 31, 2018
Statement of Financial Position [Abstract]    
Common stock, par value (in dollars per share) $ 0.0001 $ 0.0001
Common stock, authorized 1,000,000,000 1,000,000,000
Common stock, issued 518,125,454 478,950,996
Common stock, outstanding 518,125,454 478,950,996