Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Details 3)

v2.4.0.8
Stock-Based Compensation (Details 3) (Stock Options, USD $)
In Thousands, except Share data, unless otherwise specified
 3 Months Ended
Mar. 31, 2014
Options  
Outstanding at the beginning of the period (in shares) 4,637,471
Granted (in shares) 155,753
Exercised (in shares) (95,609)
Forfeited (in shares) (4,150)
Outstanding at the end of the period (in shares) 4,693,465
Options exercisable (in shares) 3,554,956
Weighted-Average Exercise Price  
Outstanding at the beginning of the period (in dollars per share) $ 9.04
Granted (in dollars per share) $ 41.84
Exercised (in dollars per share) $ 8.77
Forfeited (in dollars per share) $ 9.00
Outstanding at the end of the period (in dollars per share) $ 10.13
Options exercisable (in dollars per share) $ 8.40
Weighted-Average Remaining Contractual Life  
Outstanding 5 years 3 months 18 days
Options exercisable 4 years 6 months
Aggregate Intrinsic Value  
Outstanding (in dollars) $ 141,293
Options exercisable (in dollars) $ 112,980
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) $ 41.84