Intangible Assets and Goodwill (Schedule of Intangible Assets) (Details) - USD ($) $ in Thousands	Nov. 30, 2019	Nov. 30, 2018
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 295,968	$ 239,843
Accumulated Amortization	(196,576)	(180,924)
Total	99,392	58,919	[1]
Purchased technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	135,186	154,301
Accumulated Amortization	(105,967)	(110,959)
Total	29,219	43,342
Customer-related
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	134,042	67,802
Accumulated Amortization	(74,175)	(56,589)
Total	59,867	11,213
Trademarks and trade names
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	24,740	17,740
Accumulated Amortization	(16,043)	(13,376)
Total	8,697	4,364
Non-compete agreement
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,000	0
Accumulated Amortization	(391)	0
Total	$ 1,609	$ 0

[1] The Company adopted the accounting standard related to revenue recognition ("ASC 606") effective December 1, 2018 using the full retrospective method. See Note 1. Nature of Business and Summary of Significant Accounting Policies for further information.