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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Nov. 30, 2017 | Aug. 31, 2019 | Aug. 31, 2018 | Aug. 31, 2017 | Sep. 01, 2019
Goodwill impairment |  |  | $ 1,982 |  |
Goodwill |  | $ 64,138 | 64,310 | $ 64,915 |
Reductions in operating cash flows |  | (367,521) | (670,457) | (616,017) |
Increase (Decrease) in Accounts Receivable from Securitization, Investing Activities |  | (367,521) | (670,457) | (616,017) |
Increases in investing cash flows |  | (462,048) | 521,929 | 595,161 |
Net repayments (advances) |  | 0 | 304,178 | 111,701 |
One reporting unit within Americas Fabrication |  |  |  |  |
Goodwill |  | $ 51,100 | $ 51,100 |  |
Receivables secured by credit insurance or letters of credit |  |  |  |  |
Percentage of accounts receivable secured by credit insurance or letters of credit |  | 13.00% | 18.00% |  |
Accounting Standards Update 2016-15 |  |  |  |  |
Reductions in operating cash flows |  | $ 367,500 | $ 670,500 |  |
Increase (Decrease) in Accounts Receivable from Securitization, Investing Activities |  |  |  | $ (616,000) |
Increases in investing cash flows |  | $ 367,500 | $ 670,500 |  |
Net repayments (advances) | $ 90,000 |  |  |  |
Minimum | Accounting Standards Update 2016-02 |  |  |  |  |
Lease liability |  |  |  |  | $ 100,000
Right-of-use asset |  |  |  |  | 100,000
Maximum | Accounting Standards Update 2016-02 |  |  |  |  |
Lease liability |  |  |  |  | 120,000
Right-of-use asset |  |  |  |  | $ 120,000

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