Business Acquisitions (Schedule Of Assets Acquired Amortized Over Estimated Useful Lives) (Details) $ in Thousands	12 Months Ended
	Aug. 31, 2018 USD ($)
Weighted Average [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	8 years
Robert Gregory Partners [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 3,811
Jhana Education [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 6,076
Jhana Education [Member] | Weighted Average [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	5 years
Customer Lists [Member] | Weighted Average [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	10 years
Customer Lists [Member] | Robert Gregory Partners [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 2,249
Customer Lists [Member] | Jhana Education [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 1,016
Customer Lists [Member] | Jhana Education [Member] | Weighted Average [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	5 years
Content [Member] | Weighted Average [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	5 years
Content [Member] | Robert Gregory Partners [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 461
Content [Member] | Jhana Education [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 3,097
Content [Member] | Jhana Education [Member] | Weighted Average [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	5 years
Trade Names [Member] | Weighted Average [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	5 years
Trade Names [Member] | Robert Gregory Partners [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 341
Trade Names [Member] | Jhana Education [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 445
Trade Names [Member] | Jhana Education [Member] | Weighted Average [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	5 years
Non-compete Agreements [Member] | Weighted Average [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	2 years
Non-compete Agreements [Member] | Robert Gregory Partners [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 328
Non-compete Agreements [Member] | Jhana Education [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 44
Non-compete Agreements [Member] | Jhana Education [Member] | Weighted Average [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	3 years
Deferred Contract Revenue [Member] | Weighted Average [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	2 years
Deferred Contract Revenue [Member] | Robert Gregory Partners [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 237
Coach Relationships [Member] | Weighted Average [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	10 years
Coach Relationships [Member] | Robert Gregory Partners [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 150
Acquired Technology [Member] | Weighted Average [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	3 years
Acquired Technology [Member] | Robert Gregory Partners [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 45
Acquired Technology [Member] | Jhana Education [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 1,474
Acquired Technology [Member] | Jhana Education [Member] | Weighted Average [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	3 years