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GOODWILL AND OTHER INTANGIBLES (Narrative) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	Nov. 05, 2018	May 31, 2019	May 31, 2018	May 31, 2019	May 31, 2018	Aug. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Gross carrying amounts of the intangible assets subject to amortization		$ 21,800		$ 21,800		$ 20,500
Amortization expense for intangible assets		600	$ 600	1,700	$ 1,600
Net unfavorable lease contracts	$ (2,705)
Acquired unfavorable contract backlog	$ (110,166)	(51,998)		(51,998)		$ 0
Amortization of acquired unfavorable contract backlog		$ 23,394	$ 0	$ 58,202	$ 0
Minimum
Finite-Lived Intangible Assets [Line Items]
Life in years, unfavorable contract backlog	1 year			1 year
Maximum
Finite-Lived Intangible Assets [Line Items]
Life in years, unfavorable contract backlog	2 years			2 years

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Business Combination, Acquired Unfavorable Lease Contracts

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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