Quarterly report pursuant to Section 13 or 15(d)

Share-based Compensation - Additional Information (Details)

v2.4.0.8
Share-based Compensation - Additional Information (Details) (2011 Equity Plan, USD $)
1 Months Ended
May 31, 2014
Stock options
Feb. 28, 2014
Stock options
Feb. 28, 2014
Restricted Stock
Apr. 30, 2014
Board Of Directors
Restricted Stock
May 31, 2014
Vest Quarterly Over Three Years
Restricted Stock
May 31, 2014
Vest Three Business Days after Date of Second Quarter Earnings Release
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Granted options 159,194 1,356,972        
Exercise price (in dollars per share) $ 18.71 $ 17.75        
Vesting period 3 years 3 years 3 years 3 years 3 years 3 days
Granted shares of restricted stock     681,395 39,156 84,620 100,400
Fair value restricted stock (in dollars)     $ 17.75 $ 18.39 $ 18.71 $ 20.61