Intangible Assets And Goodwill (Intangible Assets) (Details) - USD ($) $ in Thousands	Aug. 31, 2024	Aug. 31, 2023
Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	$ 109,141	$ 107,637
Finite-lived intangible assets, accumulated amortization	(94,375)	(90,126)
Finite-lived intangible assets, net carrying amount	14,766	17,511
Intangible assets, gross carrying amount	132,141	130,637
Intangible assets, accumulated amortization	(94,375)	(90,126)
Intangible assets, net carrying amount	37,766	40,511
Covey Trade Name [Member]
Intangible Assets [Line Items]
Indefinite-lived intangible asset, gross carrying amount	23,000	23,000
Intangible assets, net carrying amount	23,000	23,000
Acquired Content [Member]
Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	49,806	49,802
Finite-lived intangible assets, accumulated amortization	(45,501)	(43,910)
Finite-lived intangible assets, net carrying amount	4,305	5,892
License Rights [Member]
Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	33,258	31,758
Finite-lived intangible assets, accumulated amortization	(26,889)	(25,461)
Finite-lived intangible assets, net carrying amount	6,369	6,297
Customer Lists [Member]
Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	15,982	15,982
Finite-lived intangible assets, accumulated amortization	(15,589)	(15,272)
Finite-lived intangible assets, net carrying amount	393	710
Acquired Technology [Member]
Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	7,282	7,282
Finite-lived intangible assets, accumulated amortization	(3,920)	(3,200)
Finite-lived intangible assets, net carrying amount	3,362	4,082
Trade Name [Member]
Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	1,883	1,883
Finite-lived intangible assets, accumulated amortization	(1,586)	(1,408)
Finite-lived intangible assets, net carrying amount	297	475
Non-Compete Agreements And Other [Member]
Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	930	930
Finite-lived intangible assets, accumulated amortization	(890)	(875)
Finite-lived intangible assets, net carrying amount	$ 40	$ 55