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Goodwill and Other Intangible Assets, Net - Schedule of Intangible Assets (Details) - USD ($)
$ in Thousands
Aug. 31, 2019
Aug. 31, 2018
Intangible Assets [Line Items]    
Gross Carrying Amount $ 7,598 $ 7,834
Accumulated Amortization (3,116) (3,476)
Intangibles, Net 4,482 4,358
Gross Carrying Amount, Indefinite-Lived 1,081 1,081
Covenants not to compete    
Intangible Assets [Line Items]    
Gross Carrying Amount 5,746 5,591
Accumulated Amortization (2,862) (2,596)
Intangibles, Net 2,884 2,995
Other intangible assets subject to amortization    
Intangible Assets [Line Items]    
Gross Carrying Amount 771 1,162
Accumulated Amortization (254) (880)
Intangibles, Net $ 517 $ 282