Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Options) (Details)

v3.3.0.814
Stock-Based Compensation (Options) (Details) - Stock Options - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Mar. 31, 2015
Jun. 30, 2015
Sep. 30, 2015
Dec. 31, 2014
Options        
Outstanding at the beginning of the period (in shares) 4,265,337 4,265,337 4,265,337  
Granted (in shares) 148,677 123,410    
Exercised (in shares) (415,512) (271,004) (249,970)  
Forfeited (in shares) (9,941) (28,403) (2,403)  
Outstanding at the end of the period (in shares) 3,988,561 3,812,564 3,560,191 4,265,337
Options exercisable (in shares)     3,234,095  
Weighted-Average Exercise Price        
Outstanding at the beginning of the period (in dollars per share) $ 10.73 $ 10.73 $ 10.73  
Granted (in dollars per share) 54.02 52.67    
Exercised (in dollars per share) 8.93 8.12 6.15  
Forfeited (in dollars per share) 24.94 46.07 47.33  
Outstanding at the end of the period (in dollars per share) $ 12.50 $ 13.86 14.38 $ 10.73
Options exercisable (in dollars per share)     $ 11.53  
Weighted-Average Remaining Contractual Life        
Outstanding 4 years 9 months 18 days 4 years 9 months 18 days 4 years 9 months 18 days 4 years 8 months 12 days
Options exercisable     4 years 4 months 24 days  
Aggregate Intrinsic Value        
Outstanding (in dollars) $ 173,837 $ 105,196 $ 64,068 $ 163,830
Options exercisable (in dollars)     63,173  
Additional disclosures        
Unrecognized stock-based compensation expense related to unvested stock options     $ 4,208  
Unrecognized compensation expense weighted-average recognition period     2 years 1 month 6 days  
Minimum        
Additional disclosures        
Exercise prices of stock options outstanding (in dollars per share)     $ 0.11  
Maximum        
Additional disclosures        
Exercise prices of stock options outstanding (in dollars per share)     $ 55.29