Intangible Assets And Goodwill (Intangible Assets) (Details) - USD ($) $ in Thousands	Aug. 31, 2019	Aug. 31, 2018
Intangible Assets And Goodwill [Line Items]
Finite-lived intangible assets, gross carrying amount	$ 117,034	$ 116,306
Finite-lived intangible assets, accumulated amortization	(92,344)	(87,372)
Finite-lived intangible assets, net carrying amount	24,690	28,934
Intangible assets, gross carrying amount	140,034	139,306
Intangible assets, accumulated amortization	(92,344)	(87,372)
Intangible assets, net carrying amount	47,690	51,934
Covey Trade Name [Member]
Intangible Assets And Goodwill [Line Items]
Indefinite-lived intangible asset, gross carrying amount	23,000	23,000
Intangible assets, net carrying amount	23,000	23,000
License Rights [Member]
Intangible Assets And Goodwill [Line Items]
Finite-lived intangible assets, gross carrying amount	28,099	27,750
Finite-lived intangible assets, accumulated amortization	(20,063)	(18,889)
Finite-lived intangible assets, net carrying amount	8,036	8,861
Acquired Content [Member]
Intangible Assets And Goodwill [Line Items]
Finite-lived intangible assets, gross carrying amount	62,307	62,102
Finite-lived intangible assets, accumulated amortization	(48,449)	(46,147)
Finite-lived intangible assets, net carrying amount	13,858	15,955
Customer Lists [Member]
Intangible Assets And Goodwill [Line Items]
Finite-lived intangible assets, gross carrying amount	20,266	20,092
Finite-lived intangible assets, accumulated amortization	(18,450)	(17,835)
Finite-lived intangible assets, net carrying amount	1,816	2,257
Acquired Technology [Member]
Intangible Assets And Goodwill [Line Items]
Finite-lived intangible assets, gross carrying amount	3,568	3,568
Finite-lived intangible assets, accumulated amortization	(3,149)	(2,642)
Finite-lived intangible assets, net carrying amount	419	926
Trade Names [Member]
Intangible Assets And Goodwill [Line Items]
Finite-lived intangible assets, gross carrying amount	2,036	2,036
Finite-lived intangible assets, accumulated amortization	(1,602)	(1,441)
Finite-lived intangible assets, net carrying amount	434	595
Non-Compete Agreements And Other [Member]
Intangible Assets And Goodwill [Line Items]
Finite-lived intangible assets, gross carrying amount	758	758
Finite-lived intangible assets, accumulated amortization	(631)	(418)
Finite-lived intangible assets, net carrying amount	$ 127	$ 340

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Intangible Assets And Goodwill [Line Items]

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Intangible assets, gross carrying amount

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 928
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Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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