GOODWILL AND OTHER INTANGIBLE ASSETS (Narrative) (Details) $ in Thousands	12 Months Ended
	Aug. 31, 2022 USD ($)	Aug. 31, 2021 USD ($)	Aug. 31, 2020 USD ($)	Apr. 25, 2022 USD ($)
Amortization of acquired unfavorable contract backlog	$ 0	$ (6,035)	$ (29,367)
Amortization expense for intangible assets	10,000	2,100	2,100
Goodwill	$ 249,009	66,137	$ 64,321
Excess over carrying value, percentage	0.18
Tensar
Amortization expense for intangible assets	$ (8,100)	$ (12,400)
Goodwill	186,805			$ 187,861
Tensar | Trade names
Indefinite-lived intangible assets acquired	53,600
Tensar | In-process research and development
Indefinite-lived intangible assets acquired	2,400
Cost of goods sold
Amortization expense for intangible assets	6,400
SG&A expenses
Amortization expense for intangible assets	3,600
North America Segment
Goodwill	$ 56,900
Perpetual lease rights
Weighted average remaining useful lives	80 years