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Stock Compensation Plans (Tables)
3 Months Ended
Mar. 31, 2012
Stock Compensation Plans [Abstract]  
Stock based Compensation Plans
                 
    Three Months Ended
March  31,
 
    2012     2011  

Stock-based compensation plans expense

  $ 40     $ 22  

Income tax benefit

    (14     (8
   

 

 

   

 

 

 

Total stock-based compensation plans expense, after-tax

  $ 26     $ 14