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Share Capital (Tables)
 6 Months Ended
Jun. 30, 2013
Equity [Abstract]  
Changes in Number of Shares of Class A Stock Outstanding

The following table reflects changes in the number of shares of Class A Stock outstanding for the periods indicated:

 

     For the Three months ended June 30,      For the Six months ended June 30,  
     2013     2012      2013     2012  

Class A Stock outstanding, beginning of period

      13,508,318        13,489,162         13,508,318        13,572,265   

Issued pursuant to shared-based compensation plans

      —          —           —          16,797   

Repurchased and cancelled pursuant to the stock buy-back

      (11,535 )      —           (11,535 )      (99,900 ) 
  

 

 

    

 

 

     

 

 

    

 

 

  

Class A Stock outstanding, end of period

      13,496,783        13,489,162         13,496,783        13,489,162