Stock-Based Compensation (Activity Stock Options and Stock Awards) (Details) - USD ($) $ in Thousands	12 Months Ended
Nov. 30, 2019	Nov. 30, 2018	Nov. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total intrinsic value of stock options on date exercised	$ 1,388	$ 3,692	$ 1,622
Total fair value of restricted stock units and deferred stock units on date vested	16,573	16,431	20,089
Deferred Stock Unit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total fair value of restricted stock units and deferred stock units on date vested	1,853	1,690	57
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total fair value of restricted stock units and deferred stock units on date vested	$ 14,720	$ 14,741	$ 20,032

Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)(2)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Definition

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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