Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED BALANCE SHEETS (Parenthetical)

v3.8.0.1
CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
Dec. 31, 2017
Dec. 31, 2016
Statement Of Financial Position [Abstract]    
Convertible preferred stock, par value (in dollars per share) $ 0.05 $ 0.05
Convertible preferred stock, shares authorized (in shares) 1,000,000 1,000,000
Convertible preferred stock, shares issued (in shares) 5,003 0
Convertible preferred stock, shares outstanding (in shares) 5,003 0
Common stock, par value (in dollars per share) $ 0.0075 $ 0.0075
Common stock, shares authorized (in shares) 277,333,332 277,333,332
Common stock, shares issued (in shares) 8,249,158 6,114,145
Common stock, shares outstanding (in shares) 8,249,158 6,114,145