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Investments (Tables)
 12 Months Ended
Nov. 30, 2013
Investments  
Schedule of fair value, cost and unrealized gain of Griffin's investment in Centaur Media

 

 

 
   Nov. 30, 2013   Dec. 1, 2012  

Fair value

   $ 2,208   $ 4,226  

Cost

     1,274     2,613  
           
​ ​ ​ ​ ​ ​ ​ ​

Unrealized gain

   $ 934   $ 1,613  
           
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