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Goodwill and Other Intangible Assets (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Feb. 28, 2019
Feb. 28, 2018
Feb. 28, 2019
Feb. 28, 2018
Goodwill and Intangible Assets Disclosure [Abstract]        
Amortization of Intangible Assets $ 800 $ 800 $ 1,500 $ 1,700
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 3,034   3,034  
Finite-Lived Intangible Assets, Amortization Expense, Year Two 2,958   2,958  
Finite-Lived Intangible Assets, Amortization Expense, Year Three 2,877   2,877  
Finite-Lived Intangible Assets, Amortization Expense, Year Four 2,787   2,787  
Finite-Lived Intangible Assets, Amortization Expense, Year Five $ 2,667   $ 2,667