Intangible Assets And Goodwill (Consolidated Goodwill) (Details) - USD ($) $ in Thousands	12 Months Ended
Aug. 31, 2018	Aug. 31, 2017
Beginning balance, Goodwill	$ 24,220	$ 19,903
Accumulated impairments
Ending balance, Goodwill	$ 24,220	24,220
Robert Gregory Partners [Member]
Acquisition of (Note 2)		1,232
Jhana Education [Member]
Acquisition of (Note 2)		$ 3,085

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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