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ACCOUNTING POLICIES - Recently Adopted Accounting Pronouncements (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
May 31, 2020 | May 31, 2019 | Sep. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Operating assets | $ 120,931 |  |
Current | 28,291 |  |
Long-term | 98,903 |  |
Cumulative effect on retained earnings of adoption of ASU 2016-02 |  | $ (2,747) |
Accounting Standards Update 2016-02 |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Cumulative effect on retained earnings of adoption of ASU 2016-02 | $ 0 |  |
Other Noncurrent Assets | Accounting Standards Update 2016-02 |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Operating assets |  |  | $ 113,400
Accrued Expenses and Other Payables | Accounting Standards Update 2016-02 |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Current |  |  | 30,900
Other Noncurrent Liabilities | Accounting Standards Update 2016-02 |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Long-term |  |  | $ 84,900

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