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Earnings Per Share (Tables)
3 Months Ended
Mar. 31, 2012
Earnings Per Share [Abstract]  
Number of shares used in earnings per share computation
                 
    Three Months Ended March 31,  
    2012     2011  

Basic:

               

Weighted average common shares outstanding

    43,309       46,409  

Diluted:

               

Dilutive effect of stock options, stock appreciation rights, restricted stock, restricted stock units and shares held in a rabbi trust

    100       168  
   

 

 

   

 

 

 

Total weighted average diluted shares outstanding

    43,409       46,577  
   

 

 

   

 

 

 

Anti-dilutive shares excluded from the diluted earnings per share calculation

    340       167  
   

 

 

   

 

 

 
Shares repurchase
                                 
    Total Number
of Shares
Repurchased
          Total Cost of
Shares
Repurchased
 
      Range of Prices Paid Per Share    
      Low     High    

Three Months Ended:

                               

March 31, 2012

    423     $ 13.85     $ 15.00     $ 6,200  

March 31, 2011

    300     $ 18.24     $ 18.53     $ 5,512