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Share-Based Compensation (Tables)
3 Months Ended
Mar. 31, 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

     296      $ 46.25   

Vested

     (210   $ 20.74   

Forfeited, canceled or expired

     (9   $ 27.23   
  

 

 

   

Outstanding as of March 31, 2014

     1,060      $ 28.36   
  

 

 

   
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

     (396   $ 13.59         

Forfeited, canceled or expired

     (4   $ 17.33         
  

 

 

         

Outstanding as of March 31, 2014

     2,623      $ 14.98         5.66       $ 83,192   
  

 

 

   

 

 

    

 

 

    

 

 

 

Exercisable as of March 31, 2014

     1,997      $ 14.29         5.33       $ 64,731   
  

 

 

   

 

 

    

 

 

    

 

 

 

Available for issuance as of March 31, 2014

     2,102           
  

 

 

         

 

(1) Aggregate intrinsic value represents the value of the University’s closing stock price on March 31, 2014 ($46.70) 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 three months ended March 31, 2014 and 2013 related to restricted stock and stock options granted:

 

     2014     2013  

Instructional costs and services

   $ 1,312      $ 1,100   

Admissions advisory and related expenses

     37        29   

Marketing and promotional

     60        49   

General and administrative

     795        992   
  

 

 

   

 

 

 

Share-based compensation expense included in operating expenses

     2,204        2,170   

Tax effect of share-based compensation

     (882     (868
  

 

 

   

 

 

 

Share-based compensation expense, net of tax

   $ 1,322      $ 1,302