Property And Equipment (Schedule Of Property And Equipment, Net) (Details) - USD ($) $ in Thousands	Nov. 30, 2021	Aug. 31, 2021
Property Plant And Equipment [Line Items]
Subtotal	$ 106,636	$ 106,718
Less: accumulated depreciation and amortization	(37,656)	(36,573)
Total	68,980	70,145
Machinery, Equipment And Vehicles [Member]
Property Plant And Equipment [Line Items]
Subtotal	35,893	22,504
Buildings And Improvements [Member]
Property Plant And Equipment [Line Items]
Subtotal	29,560	29,697
Computer And Office Equipment [Member]
Property Plant And Equipment [Line Items]
Subtotal	6,121	5,742
Software [Member]
Property Plant And Equipment [Line Items]
Subtotal	10,532	10,559
Furniture And Fixtures [Member]
Property Plant And Equipment [Line Items]
Subtotal	2,843	2,794
Capital In Progress [Member]
Property Plant And Equipment [Line Items]
Subtotal	17,316	31,016
Land [Member]
Property Plant And Equipment [Line Items]
Subtotal	$ 4,371	$ 4,406