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Consolidated Balance Sheets [Parenthetical] - $ / shares
Dec. 31, 2018
Dec. 31, 2017
Preferred stock, par value (in dollars per share) $ 0.0001 $ 0.0001
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0
Common stock, par value (in dollars per share) $ 0.0001 $ 0.0001
Common stock, shares issued 26,697,261 15,608,853
Common stock, shares outstanding 26,697,261 15,608,853