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Intangible Assets and Goodwill (Schedule Of Future Amortization Expense From Intangible Assets Held) (Details) - USD ($)
$ in Thousands
Nov. 30, 2017
Nov. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]    
2018 $ 36,378  
2019 35,253  
2020 10,272  
2021 9,550  
2022 3,441  
Total $ 94,894 $ 80,827