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Restructuring Charges (Narrative) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Feb. 28, 2019 | Feb. 28, 2018 | [1] | Nov. 30, 2017 | Nov. 30, 2018
Restructuring Cost and Reserve [Line Items] |  |  |  |
Global workforce reduction (as a percent) |  |  | 20.00% |
Restructuring expenses | $ 415 | $ 1,821 |  |
Restructuring reserve |  |  |  | $ 311
Other Accrued Liabilities |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring reserve | $ 483 |  |  |
[1] | The Company adopted ASC 606 effective December 1, 2018 using the full retrospective method. See Note 1. Nature of Business and Basis of Presentation for further information.

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