Annual report pursuant to Section 13 and 15(d)

Consolidated Balance Sheets (Parenthetical)

v3.10.0.1
Consolidated Balance Sheets (Parenthetical) - $ / shares
Dec. 31, 2018
Dec. 31, 2017
Statement Of Financial Position [Abstract]    
Preferred stock, par value $ 0.005 $ 0.005
Preferred stock, shares authorized 20,000,000 20,000,000
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0
Common stock, par value $ 0.005 $ 0.005
Common stock, shares authorized 500,000,000 500,000,000
Common stock, shares issued 10,864,722 9,827,129
Common stock, shares outstanding 10,864,722 9,827,129