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Intangible Assets and Goodwill (Schedule Of Future Amortization Expense From Intangible Assets Held) (Details) (USD $)
In Thousands, unless otherwise specified
May 31, 2013
Nov. 30, 2012
Goodwill and Intangible Assets Disclosure [Abstract]    
Remainder of 2013 $ 1,480  
2014 2,638  
2015 2,409  
2016 1,906  
2017 1,906  
Thereafter 1,091  
Net Book Value $ 11,430 $ 5,119