Quarterly report pursuant to Section 13 or 15(d)

Net Loss Per Share (Details)

v2.4.0.8
Net Loss Per Share (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Numerator:        
Net loss $ (11,728) $ (6,902) $ (40,659) $ (45,588)
Denominator:        
Weighted-average common shares outstanding used in computing basic and diluted net loss per share (in shares) 205,706 174,789 202,798 173,766
Net loss per share, basic and diluted (in dollars per share) $ (0.06) $ (0.04) $ (0.20) $ (0.26)
Anti-dilutive securities        
Potential common shares outstanding that were excluded from the computation of diluted net loss per share     24,444 34,127
Employee and Non Employee Stock Options [Member]
        
Anti-dilutive securities        
Potential common shares outstanding that were excluded from the computation of diluted net loss per share     12,647 24,422
Restricted Stock Units (RSUs) [Member]
        
Anti-dilutive securities        
Potential common shares outstanding that were excluded from the computation of diluted net loss per share     11,797 9,705