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Property And Equipment (Schedule Of Property And Equipment, Net) (Details) - USD ($)
$ in Thousands
Aug. 31, 2018
Aug. 31, 2017
Aug. 31, 2016
Property Plant And Equipment [Line Items]      
Subtotal $ 62,790 $ 52,865  
Less: accumulated depreciation and amortization (26,433) (23,426)  
Total [1] 36,357 29,439 $ 11,545
Machinery, Equipment and Vehicles [Member]      
Property Plant And Equipment [Line Items]      
Subtotal 17,848 17,491  
Buildings And Improvements [Member]      
Property Plant And Equipment [Line Items]      
Subtotal 17,100 16,953  
Computer And Office Equipment [Member]      
Property Plant And Equipment [Line Items]      
Subtotal 5,046 4,552  
Software [Member]      
Property Plant And Equipment [Line Items]      
Subtotal 9,481 7,947  
Furniture And Fixtures [Member]      
Property Plant And Equipment [Line Items]      
Subtotal 1,820 1,608  
Capital In Progress [Member]      
Property Plant And Equipment [Line Items]      
Subtotal 8,042 861  
Land [Member]      
Property Plant And Equipment [Line Items]      
Subtotal $ 3,453 $ 3,453  
[1] Includes tangible assets and property and equipment, net, attributed to the geographic location in which such assets are located.