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Intangible Assets And Goodwill (Intangible Assets) (Details) - USD ($)
$ in Thousands
Aug. 31, 2015
Aug. 31, 2014
Intangible Assets And Goodwill [Line Items]    
Definite-lived intangible assets, gross carrying amount $ 105,675 $ 105,681
Definite-lived intangible assets, accumulated amortization (75,226) (71,504)
Finite-lived intangible assets, net carrying amount 30,449 34,177
Intangible assets, gross carrying amount 128,675 128,681
Intangible assets, accumulated amortization (75,226) (71,504)
Intangible assets, net carrying amount 53,449 57,177
Trade Names [Member]    
Intangible Assets And Goodwill [Line Items]    
Covey trade name 23,000 23,000
Intangible assets, net carrying amount 23,000 23,000
License Rights [Member]    
Intangible Assets And Goodwill [Line Items]    
Definite-lived intangible assets, gross carrying amount 27,000 27,000
Definite-lived intangible assets, accumulated amortization (15,852) (14,915)
Finite-lived intangible assets, net carrying amount 11,148 12,085
Acquired Curriculum [Member]    
Intangible Assets And Goodwill [Line Items]    
Definite-lived intangible assets, gross carrying amount 58,549 58,555
Definite-lived intangible assets, accumulated amortization (40,587) (39,009)
Finite-lived intangible assets, net carrying amount 17,962 19,546
Customer Lists [Member]    
Intangible Assets And Goodwill [Line Items]    
Definite-lived intangible assets, gross carrying amount 16,827 16,827
Definite-lived intangible assets, accumulated amortization (16,303) (15,953)
Finite-lived intangible assets, net carrying amount 524 874
Internally Developed Software [Member]    
Intangible Assets And Goodwill [Line Items]    
Definite-lived intangible assets, gross carrying amount 2,049 2,049
Definite-lived intangible assets, accumulated amortization (1,708) (1,025)
Finite-lived intangible assets, net carrying amount 341 1,024
Trade Names [Member]    
Intangible Assets And Goodwill [Line Items]    
Definite-lived intangible assets, gross carrying amount 1,250 1,250
Definite-lived intangible assets, accumulated amortization (776) (602)
Finite-lived intangible assets, net carrying amount $ 474 $ 648