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Basis of Presentation (Tables)
9 Months Ended
Sep. 30, 2012
Dilutive and Antidilutive Options

The dilutive and antidilutive options are shown separately in the table below.

 

     Three Months Ended
September 30
     Nine Months Ended
September 30
 
     2012      2011      2012      2011  

Additional shares

     689,000         876,000         746,000         1,211,000   

Antidilutive options

     2,497,000         1,697,000         2,561,000         770,000