GOODWILL AND OTHER INTANGIBLE ASSETS (Narrative) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Nov. 05, 2018	Feb. 28, 2019	Feb. 28, 2018	Feb. 28, 2019	Feb. 28, 2018	Aug. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Gross carrying amounts of the intangible assets subject to amortization		$ 22,200		$ 22,200		$ 20,500
Amortization expense for intangible assets		600	$ 600	1,100	$ 1,100
Net unfavorable lease contracts	$ (2,705)
Acquired unfavorable contract backlog	$ (110,166)	(75,358)		(75,358)		$ 0
Amortization of acquired unfavorable contract backlog		$ 23,476	$ 0	$ 34,808	$ 0
Minimum
Finite-Lived Intangible Assets [Line Items]
Life in years, unfavorable contract backlog	1 year
Maximum
Finite-Lived Intangible Assets [Line Items]
Life in years, unfavorable contract backlog	2 years