Quarterly report pursuant to Section 13 or 15(d)

Stockholders' equity (Details)

v2.4.0.8
Stockholders' equity (Details) (USD $)
Sep. 30, 2014
Dec. 31, 2013
Class of Stock [Line Items]    
Common stock, shares authorized 75,000,000 75,000,000
Common stock, par value per share (in dollars per share) $ 0.0001 $ 0.0001
Common stock, shares outstanding 24,940,195 24,946,739
Preferred stock, shares authorized 10,000,000 10,000,000
Preferred stock, par value per share (in dollars per share) $ 0.0001 $ 0.0001
Preferred stock, shares outstanding 0 0