XML 68 R55.htm IDEA: XBRL DOCUMENT v3.5.0.2
Equity Incentive Plans and Stock-Based Compensation (Details 2) - Employee Stock Option [Member] - USD ($)
$ / shares in Units, $ in Thousands
 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Number of Shares    
Outstanding, at the beginning of the period (in shares) 8,995,017  
Options granted (in shares) 440,000 362,335
Options exercised (in shares) (1,255,904)  
Options forfeited (in shares) (990,089)  
Outstanding, at the end of the period (in shares) 7,189,024  
Vested or expected to vest at the end of the period (in shares) 7,022,797  
Options exercisable at the end of the period (in shares) 4,740,578  
Weighted Average Exercise Price    
Outstanding at the beginning of the year (in dollars per shares) $ 10.01  
Options granted (in dollars per share) 12.31  
Options exercised (in dollars per share) 7.28  
Options forfeited (in dollars per share) 19.26  
Outstanding at the end of the period (in dollars per shares) 9.36  
Vested or expected to vest at the end of the period (in dollars per share) 9.37  
Options exercisable at the end of the period (in dollars per share) $ 10.13  
Weighted Average Remaining Contractual Term    
Outstanding 5 years 4 months 2 days  
Vested or expected to vest 5 years 3 months 15 days  
Options exercisable 4 years 6 months  
Aggregate Intrinsic Value    
Outstanding $ 30,612  
Vested or expected to vest 29,963  
Options exercisable $ 19,191  
Stock Options with Market Condition [Member]    
Number of Shares    
Outstanding, at the beginning of the period (in shares) 1,315,000  
Outstanding, at the end of the period (in shares) 1,135,000