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Stockholders' Equity (Tables)
6 Months Ended
Jun. 30, 2014
Equity [Abstract]  
Summary of Stock Option Activity

Stock option activity for the six months ended June 30, 2014 is presented below (in thousands, except per share data):

 

     Number
of Shares
    Weighted-
Average
Exercise
Price Per
Share
     Weighted-
Average
Remaining
Contractual
Term (in years)
     Aggregate
Intrinsic
Value
 

Outstanding at December 31, 2013

     1,734      $ 31.85         

Granted

     111        36.80         

Exercised

     (110     31.37         

Forfeited

     (57     34.57         
  

 

 

         

Outstanding at June 30, 2014

     1,678      $ 32.11         6.69       $ 9,710   
  

 

 

   

 

 

    

 

 

    

 

 

 

Exercisable at June 30, 2014

     943      $ 29.96         5.20       $ 7,493   
  

 

 

   

 

 

    

 

 

    

 

 

 
Details of Restricted Stock Unit Activity

Restricted stock unit activity for the six months ended June 30, 2014 is presented below (in thousands, except per share data):

 

     Number of
Shares
    Weighted-
Average
Grant Date
Fair Value
 

Unvested at December 31, 2013

     372      $ 34.14   

Granted

     —       

Vested or settled

     (96     33.99   

Forfeited

     (68     33.41   
  

 

 

   

Unvested at June 30, 2014

     208      $ 34.45   
  

 

 

   
Summary of Stock-Based Compensation Recorded in Expense Categories

Stock-based compensation was recorded in the following expense categories (in thousands):

 

     Three Months Ended
June 30,
    Six Months Ended
June 30,
 
     2014      2013     2014      2013  

Cost of services and fulfillment

   $ 798       $ 743      $ 1,871       $ 1,647   

Selling and marketing

     127         150        465         572   

General and administrative

     293         (25     829         509   
  

 

 

    

 

 

   

 

 

    

 

 

 

Total

   $ 1,218       $ 868      $ 3,165       $ 2,728   
  

 

 

    

 

 

   

 

 

    

 

 

 
Assumptions for Valuation of Options Granted under Equity Incentive Plans and Shares Subject to Purchase under Employee Stock Purchase Plan

Options granted under the equity incentive plans and shares subject to purchase under the employee stock purchase plan were valued using the following assumptions:

 

     Three Months Ended
June 30, 2014
    Three Months Ended
June 30, 2013
 
     Equity Incentive
Plans
    Employee Stock
Purchase Plan
    Equity Incentive
Plans
    Employee Stock
Purchase Plan
 

Average risk-free interest rate

     1.70     0.08     0.71     0.11

Expected dividend yield

     1.8     1.8     2.1     2.1

Expected life

     5.1 Years        0.5 Years        4.9 Years        0.5 Years   

Expected volatility

     30     25     36     25

Weighted average fair value

   $ 8.67      $ 7.81      $ 9.27      $ 5.97   
     Six Months Ended
June 30, 2014
    Six Months Ended
June 30, 2013
 
     Equity Incentive
Plans
    Employee Stock
Purchase Plan
    Equity Incentive
Plans
    Employee Stock
Purchase Plan
 

Average risk-free interest rate

     1.66     0.08     0.72     0.11

Expected dividend yield

     1.8     1.8     2.1     2.1

Expected life

     5.1 Years        0.5 Years        4.8 Years        0.5 Years   

Expected volatility

     30     25     37     25

Weighted average fair value

   $ 8.76      $ 7.81      $ 9.05      $ 5.97