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Intangible Assets and Goodwill (Schedule of Intangible Assets) (Details) - USD ($)
$ in Thousands
Nov. 30, 2020
Nov. 30, 2019
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 437,268 $ 295,968
Accumulated Amortization (224,521) (196,576)
Total 212,747 99,392
Purchased technology    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 173,486 135,186
Accumulated Amortization (113,863) (105,967)
Total 59,623 29,219
Customer-related    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 231,342 134,042
Accumulated Amortization (91,326) (74,175)
Total 140,016 59,867
Trademarks and trade names    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 30,440 24,740
Accumulated Amortization (18,275) (16,043)
Total 12,165 8,697
Non-compete agreement    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 2,000 2,000
Accumulated Amortization (1,057) (391)
Total $ 943 $ 1,609