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ACQUISITION - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	9 Months Ended
	May 31, 2019	Nov. 05, 2018	Aug. 31, 2018
Business Acquisition [Line Items]
Acquired unfavorable contract backlog	$ (51,998)	$ (110,166)	$ 0
Total assets acquired and liabilities assumed		701,200
Pension and other post-retirement liabilities		6,400
Inventory Step-up	10,300
2018 Acquisitions
Business Acquisition [Line Items]
Cash and cash equivalents	6,399
Accounts receivable	301,740
Inventories	202,082
Other current assets	26,290
Property, plant and equipment	414,237
Deferred income taxes	11,606
Accounts payable-trade, accrued expenses and other payables	(134,702)
Acquired unfavorable contract backlog	(110,166)
Other long-term liabilities	(9,920)
Pension and other post retirement employment benefits	$ (6,365)
Total assets acquired and liabilities assumed		$ 701,201

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