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Property And Equipment (Schedule Of Property And Equipment, Net) (Details) - USD ($)
$ in Thousands
Aug. 31, 2020
Aug. 31, 2019
Aug. 31, 2018
Property Plant And Equipment [Line Items]      
Subtotal $ 93,038 $ 74,494  
Less: accumulated depreciation and amortization (32,279) (29,418)  
Total [1] 60,759 45,076 $ 36,357
Machinery, Equipment And Vehicles [Member]      
Property Plant And Equipment [Line Items]      
Subtotal 20,434 19,356  
Buildings And Improvements [Member]      
Property Plant And Equipment [Line Items]      
Subtotal 28,271 17,391  
Computer And Office Equipment [Member]      
Property Plant And Equipment [Line Items]      
Subtotal 5,420 5,328  
Software [Member]      
Property Plant And Equipment [Line Items]      
Subtotal 9,959 10,189  
Furniture And Fixtures [Member]      
Property Plant And Equipment [Line Items]      
Subtotal 2,641 2,039  
Capital In Progress [Member]      
Property Plant And Equipment [Line Items]      
Subtotal 21,939 16,747  
Land [Member]      
Property Plant And Equipment [Line Items]      
Subtotal $ 4,374 $ 3,444  
[1] Includes tangible assets and property and equipment, net, attributed to the geographic location in which such assets are located.