GOODWILL AND OTHER INTANGIBLE ASSETS (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
Aug. 31, 2021	Aug. 31, 2020	Aug. 31, 2019
Acquired unfavorable contract backlog liability		$ 110,200
Acquired unfavorable contract backlog	$ 0	6,035
Amortization of acquired unfavorable contract backlog	(6,035)	(29,367)	$ (74,784)
Amortization expense for intangible assets	$ 2,100	$ 2,200	$ 2,200
Minimum
Weighted average remaining useful lives	5 years
Maximum
Weighted average remaining useful lives	15 years

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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