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Basis Of Presentation And Summary Of Significant Accounting Policies (Narrative) (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Nov. 30, 2021 | Nov. 30, 2020 | Aug. 31, 2021
Basis of Presentation and Summary of Significant Accounting Policies [Line Items] |  |  |
Realized foreign currency transactions | $ 0 | $ 0 |
Unrealized foreign currency transactions | (541,000) | $ (52,000) |
Carrying value of senior notes | 112,729,000 |  | $ 114,940,000
Assets | 421,439,000 |  | 430,203,000
Liabilities | 223,041,000 |  | 229,821,000
Foreign Currency Forward Contracts [Member] |  |  |
Basis of Presentation and Summary of Significant Accounting Policies [Line Items] |  |  |
Foreign currency forward contracts outstanding | $ 1,500,000 |  |
Foreign currency forward contracts, Maturity date | Jan. 28, 2022 |  |
Unrealized foreign currency transactions | $ 0 |  | $ 0
Level 2 [Member] | Recurring [Member] |  |  |
Basis of Presentation and Summary of Significant Accounting Policies [Line Items] |  |  |
Assets | 0 |  |
Liabilities | 0 |  |
Level 2 [Member] | Nonrecurring [Member] |  |  |
Basis of Presentation and Summary of Significant Accounting Policies [Line Items] |  |  |
Assets | 0 |  |
Liabilities | 0 |  |
Senior Notes [Member] | Level 2 [Member] |  |  |
Basis of Presentation and Summary of Significant Accounting Policies [Line Items] |  |  |
Fair value of senior notes | 66,300,000 |  |
Carrying value of senior notes | $ 68,800,000 |  |

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