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Nature of Business and Summary of Significant Accounting Policies (Summary of Allowances) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Nov. 30, 2020 | Nov. 30, 2019 | Nov. 30, 2018
SEC Schedule, 12-09, Allowance, Credit Loss |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning balance | $ 667 | $ 574 | $ 498
ASC 606 adjustment | 0 | 0 | 88
Charge to costs and expenses | 429 | 606 | 216
Write-offs and other | (169) | (457) | (232)
Translation adjustments | (41) | (56) | 4
Ending balance | 886 | 667 | 574
Allowance for Sales Credit Memos |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning balance | 158 | 266 | 178
ASC 606 adjustment | 0 | 0 | 41
Charge to costs and expenses | 265 | (60) | 46
Write-offs and other | 0 | (46) | 0
Translation adjustments | 6 | (2) | 1
Ending balance | $ 429 | $ 158 | $ 266

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