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Property And Equipment (Schedule Of Property And Equipment, Net) (Details) - USD ($)
$ in Thousands
May 31, 2020
Aug. 31, 2019
Property Plant And Equipment [Line Items]    
Subtotal $ 88,307 $ 74,494
Less: accumulated depreciation and amortization (31,595) (29,418)
Total 56,712 45,076
Machinery, Equipment And Vehicles [Member]    
Property Plant And Equipment [Line Items]    
Subtotal 19,814 19,356
Buildings And Improvements [Member]    
Property Plant And Equipment [Line Items]    
Subtotal 27,282 17,391
Computer And Office Equipment [Member]    
Property Plant And Equipment [Line Items]    
Subtotal 5,516 5,328
Software [Member]    
Property Plant And Equipment [Line Items]    
Subtotal 10,325 10,189
Furniture And Fixtures [Member]    
Property Plant And Equipment [Line Items]    
Subtotal 2,532 2,039
Capital In Progress [Member]    
Property Plant And Equipment [Line Items]    
Subtotal 18,550 16,747
Land [Member]    
Property Plant And Equipment [Line Items]    
Subtotal $ 4,288 $ 3,444