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Share-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]  
Summary of Activity Related to Restricted Stock Granted under Incentive Plan

A summary of the activity related to restricted stock granted under the University’s Incentive Plan since December 31, 2013 is as follows:

 

     Total
Shares
    Weighted Average
Grant Date
Fair Value per Share
 

Outstanding as of December 31, 2013

     983      $ 21.34   

Granted

     306      $ 46.18   

Vested

     (219   $ 21.20   

Forfeited, canceled or expired

     (15   $ 28.37   
  

 

 

   

Outstanding as of June 30, 2014

     1,055      $ 28.48   
  

 

 

   
Summary of Activity Related to Stock Options Granted under Company's Incentive Plan

A summary of the activity related to stock options granted under the University’s Incentive Plan since December 31, 2013 is as follows:

 

     Summary of Stock Options Outstanding  
     Total
Shares
    Weighted
Average
Exercise
Price per
Share
     Weighted
Average
Remaining
Contractual
Term (Years)
     Aggregate
Intrinsic
Value ($)(1)
 

Outstanding as of December 31, 2013

     3,023      $ 14.80         

Granted

     —        $ —           

Exercised

     (470   $ 14.12         

Forfeited, canceled or expired

     (13   $ 17.25         
  

 

 

         

Outstanding as of June 30, 2014

     2,540      $ 14.91         5.39       $ 78,903   
  

 

 

   

 

 

    

 

 

    

 

 

 

Exercisable as of June 30, 2014

     1,940      $ 14.23         5.05       $ 61,563   
  

 

 

   

 

 

    

 

 

    

 

 

 

Available for issuance as of June 30, 2014

     2,108           
  

 

 

         

 

(1) Aggregate intrinsic value represents the value of the University’s closing stock price on June 30, 2014 ($45.97) in excess of the exercise price multiplied by the number of shares underlying options outstanding or exercisable, as applicable.
Share-Based Compensation Expense

The table below outlines share-based compensation expense for the six months ended June 30, 2014 and 2013 related to restricted stock and stock options granted:

 

     2014     2013  

Instructional costs and services

   $ 2,874      $ 2,546   

Admissions advisory and related expenses

     80        64   

Marketing and promotional

     131        109   

General and administrative

     1,752        2,186   
  

 

 

   

 

 

 

Share-based compensation expense included in operating expenses

     4,837        4,905   

Tax effect of share-based compensation

     (1,935     (1,962
  

 

 

   

 

 

 

Share-based compensation expense, net of tax

   $ 2,902      $ 2,943