ACQUISITION - Acquired Amortizable Intangible Assets (Liabilities) (Details) - USD ($) $ in Thousands	Nov. 05, 2018	Feb. 28, 2019	Aug. 31, 2018
Acquired Finite-Lived Intangible Assets [Line Items]
Unfavorable contract backlog	$ (110,166)	$ (75,358)	$ 0
Minimum
Acquired Finite-Lived Intangible Assets [Line Items]
Life in years, unfavorable contract backlog	1 year
Maximum
Acquired Finite-Lived Intangible Assets [Line Items]
Life in years, unfavorable contract backlog	2 years
Real Property | Minimum
Acquired Finite-Lived Intangible Assets [Line Items]
Life in years, asset	1 year
Real Property | Maximum
Acquired Finite-Lived Intangible Assets [Line Items]
Life in years, asset	35 years
Personal Property | Minimum
Acquired Finite-Lived Intangible Assets [Line Items]
Life in years, asset	1 year
Personal Property | Maximum
Acquired Finite-Lived Intangible Assets [Line Items]
Life in years, asset	25 years