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Business Acquisitions (Schedule Of Assets Acquired Amortized Over Estimated Useful Lives) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 05, 2018
Aug. 31, 2019
Weighted Average [Member]    
Acquired Finite-Lived Intangible Assets [Line Items]    
Estimated Useful Life   8 years
Germany, Switzerland, And Austria Licensee [Member]    
Acquired Finite-Lived Intangible Assets [Line Items]    
Intangible assets acquired $ 741  
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
Reacquisition Of License [Member] | Germany, Switzerland, And Austria Licensee [Member]    
Acquired Finite-Lived Intangible Assets [Line Items]    
Intangible assets acquired $ 360  
Reacquisition Of License [Member] | Germany, Switzerland, And Austria Licensee [Member] | Weighted Average [Member]    
Acquired Finite-Lived Intangible Assets [Line Items]    
Estimated Useful Life 3 years  
Localized Content [Member] | Germany, Switzerland, And Austria Licensee [Member]    
Acquired Finite-Lived Intangible Assets [Line Items]    
Intangible assets acquired $ 202  
Localized Content [Member] | Germany, Switzerland, And Austria Licensee [Member] | Weighted Average [Member]    
Acquired Finite-Lived Intangible Assets [Line Items]    
Estimated Useful Life 3 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
Customer Relationships [Member] | Germany, Switzerland, And Austria Licensee [Member]    
Acquired Finite-Lived Intangible Assets [Line Items]    
Intangible assets acquired $ 179  
Customer Relationships [Member] | Germany, Switzerland, And Austria Licensee [Member] | Weighted Average [Member]    
Acquired Finite-Lived Intangible Assets [Line Items]    
Estimated Useful Life 3 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