Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Details 2)

v2.4.0.8
Stock-Based Compensation (Details 2) (USD $)
6 Months Ended
Jun. 30, 2014
Restricted stock awards
 
Number of shares  
Total granted and unvested at the beginning of the period (in shares) 45,093
Granted (in shares) 1,923,448
Forfeited (in shares) (3,323)
Total awarded and unvested at the end of the period (in shares) 1,965,218
Weighted average grant date fair value  
Total granted and unvested at the beginning of the period (in dollars per share) $ 54.27
Granted (in dollars per share) $ 65.00
Forfeited (in dollars per share) $ 58.40
Total awarded and unvested at the end of the period (in dollars per share) $ 64.82
Aggregate intrinsic value  
Total awarded and unvested at the beginning of the period $ 2,861,000
Granted 126,236,000
Forfeited (218,000)
Total awarded and unvested at the end of the period 128,977,000
Unrecognized stock-based compensation expense $ 118,600,000
Restricted stock units | Minimum
 
Aggregate intrinsic value  
Weighted average period for recognizing unrecognized stock-based compensation expense 3 years 6 months
Restricted stock units | Maximum
 
Aggregate intrinsic value  
Weighted average period for recognizing unrecognized stock-based compensation expense 4 years