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Consolidated Balance Sheets (Parenthetical) - USD ($)
Dec. 31, 2016
Dec. 31, 2015
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, shares authorized 100,000,000 100,000,000
Common stock, shares issued 16,786,952 14,017,909
Common stock, shares outstanding 16,786,952 14,017,909
Preferred stock par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock shares authorized 10,000,000 10,000,000
Series A Convertible Preferred Stock [Member]    
Convertible preferred stock, shares authorized 10,000 10,000
Convertible preferred stock, shares issued 0 4,555
Convertible preferred stock, shares outstanding 0 4,555
Convertible preferred stock, aggregate liquidation preference $ 0 $ 0
Series B Convertible Preferred Stock [Member]    
Preferred stock par value (in dollars per share) $ 0.001  
Convertible preferred stock, shares authorized 13,780 0
Convertible preferred stock, shares issued 12,780 0
Convertible preferred stock, shares outstanding 12,780 0
Convertible preferred stock, aggregate liquidation preference $ 0 $ 0