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Intangible Assets and Goodwill (Schedule Of Future Amortization Expense From Intangible Assets Held) (Details) - USD ($)
$ in Thousands
Nov. 30, 2018
Nov. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]    
2019 $ 34,932  
2020 10,152  
2021 10,033  
2022 3,802  
Total $ 58,919 $ 94,894