Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED BALANCE SHEETS (Parenthetical)

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CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
Dec. 31, 2018
Dec. 31, 2017
Preferred stock    
Preferred stock, par value (USD per share) $ 0.001 $ 0.001
Preferred stock authorized (shares) 10,000 10,000
Preferred stock issued (shares) 2,907 4,963
Preferred stock outstanding (shares) 2,907 4,963
Common stock    
Common stock, par value (USD per share) $ 0.001 $ 0.001
Common stock authorized (shares) 300,000,000 300,000,000
Common stock issued (shares) 54,151,219 45,017,062
Common stock outstanding (shares) 54,151,219 45,017,062