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GOODWILL AND OTHER INTANGIBLES (Changes in the Carrying Amount of Goodwill) (Details) - USD ($) $ in Thousands	Feb. 29, 2020	Aug. 31, 2019
Goodwill [Line Items]
Goodwill, gross	$ 74,361
Accumulated impairment losses	(10,189)
Goodwill, net	64,172	$ 64,138
Americas Recycling
Goodwill [Line Items]
Goodwill, gross	9,543
Accumulated impairment losses	(9,543)
Goodwill, net	0
Americas Mills
Goodwill [Line Items]
Goodwill, gross	4,970
Accumulated impairment losses	0
Goodwill, net	4,970
Americas Fabrication
Goodwill [Line Items]
Goodwill, gross	57,428
Accumulated impairment losses	(493)
Goodwill, net	56,935
International Mill
Goodwill [Line Items]
Goodwill, gross	2,420
Accumulated impairment losses	(153)
Goodwill, net	$ 2,267

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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