Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Tables)

v2.4.0.6
Stock-Based Compensation (Tables)
3 Months Ended
Mar. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Employee stock-based compensation expense
                 
    Three Months Ended  
    March 31,  
    2013     2012  

Employee stock-based compensation expense

  $ 2,306     $ 795  

Tax effect on employee stock-based compensation expense

    (969     (320
   

 

 

   

 

 

 

Net effect on income

  $ 1,337     $ 475  
   

 

 

   

 

 

 
Weighted average assumptions to value options granted
                 
    Three Months Ended
March 31,
 
    2013     2012  

Grant date fair value of options

  $ 6.11     $ 4.92  

Volatility

    40.4     39.7

Risk-free interest rate

    1.0     1.1

Dividend yield

    0.0     0.0

Expected term (in years)

    6.0       6.0  
Summary of option activity
                                 
    Shares     Weighted-
Average
Exercise Price
    Weighted-Average
Remaining
Contractual Life
(Years)
    Aggregate
Intrinsic Value
 

Outstanding as of December 31, 2012

    5,277,412     $ 8.86                  

Granted

    190,413       15.34                  

Exercised

    (9,050     6.24                  

Forfeited

    (8,050     11.91                  
   

 

 

                         

Outstanding as of March 31, 2013

    5,450,725       9.08       6.2     $ 45,939  
   

 

 

                         

Options exercisable

    3,559,668       7.96       5.2       33,985  
   

 

 

                         
Restricted Stock [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Summary of unvested restricted stock awards activity
                 
    Number  of
Shares
    Weighted-
Average Grant
Date Fair Value
per Share
 

Balance at December 31, 2012

    758,990     $ 12.49  

Granted

    172,212       15.34  

Vested

    (70,964     —     

Forfeited

    (3,197     13.78  
   

 

 

         

Balance at March 31, 2013

    857,041     $ 13.07