XML 42 R24.htm IDEA: XBRL DOCUMENT v2.4.0.6
Stock-Based Compensation (Tables)
 9 Months Ended
Sep. 30, 2012
Schedule of Stock Based Compensation Expense

The following table discloses the amount of stock based compensation expense for the three and nine-month periods ended September 30, 2011 and 2012:

 

     Three months ended September 30      Nine months ended September 30  
     2011     2012      2011      2012  

Stock options

    $ 665      $ 863       $ 1,885       $ 2,506   

Stock awards

      —          67         —           67   

Restricted stock units

      308        286         906         890   

Performance stock units

      (242 )      1,025         279         2,449   
  

 

 

    

 

 

     

 

 

     

 

 

  

Total stock based compensation

    $ 731      $ 2,241       $ 3,070       $ 5,912   
  

 

 

    

 

 

     

 

 

     

 

 

  
Schedule of Fair Value of Options Granted

third each year through February 2015. The fair value of these options was estimated at the date of grant using a Black-Scholes option pricing model with the following weighted-average assumptions:

 

     2011     2012  

Risk-free interest rate

      2.7 %      1.2 % 

Dividend yield

      1.8 %      2.7 % 

Expected volatility of the Company’s common stock

      0.615        0.644   

Expected life in years

      6.0        6.0   
Schedule of Stock Option Activity

The following table provides details of the stock option activity for the nine months ended September 30, 2012:

 

     Number of  
     Shares  

Outstanding at January 1, 2012

      1,737,881   

Granted

      589,934   

Exercised

      (584,859 ) 

Expired

      (32,800 ) 

Cancelled

      (9,697 ) 
  

 

 

  

Outstanding at September 30, 2012

      1,700,459   

Exercisable

      814,251   
Schedule of Nonvested Restricted Stock Unit Activity

The following table provides details of the nonvested RSU activity for the nine months ended September 30, 2012:

 

     Number of
Restricted
Units		  

Nonvested at January 1, 2012

      186,805   

Granted

      6,000   

Vested

      (44,906 ) 

Cancelled

      (5,067 ) 

Accrued dividend equivalents

      2,980   
  

 

 

  

Nonvested at September 30, 2012

      145,812   
  

 

 

  
Schedule of Performance Based Units Earned Under Long-Term Incentive Plans

The following table provides details of the nonvested PSUs under the Company’s Long-Term Incentive Plans:

 

Performance stock units outstanding at January 1, 2012

      61,450   

Accrued dividend equivalents

      1,182   
  

 

 

  

Performance stock units outstanding at September 30, 2012

      62,632