Intangible Assets And Goodwill (Narrative) (Details)	12 Months Ended
	Aug. 31, 2024 USD ($) item	Aug. 31, 2023 USD ($)	Aug. 31, 2022 USD ($)
Finite-Lived Intangible Assets [Line Items]
Acquisition of content rights	$ 750,000
Aggregate amortization expense from definite-lived intangible assets	4,200,000	$ 4,300,000	$ 5,300,000
Accumulated impairment charges	0
Goodwill, impairment	0
Contractual Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Acquisition of content rights	$ 1,500,000
Number of payment installments | item	2
Amount of installment payments of acquired intangible assets	$ 800,000
Amortized useful life	10 years