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Income Taxes (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Nov. 30, 2021 | Nov. 30, 2020
Operating Loss Carryforwards [Line Items] |  |
Deferred tax assets, valuation allowance | $ 2,693 | $ 4,411
Federal |  |
Operating Loss Carryforwards [Line Items] |  |
Net operating loss carryforwards | 32,968 | 36,264
State |  |
Operating Loss Carryforwards [Line Items] |  |
Net operating loss carryforwards | $ 41,935 | $ 51,757
State | Minimum |  |
Operating Loss Carryforwards [Line Items] |  |
Net operating loss carryforward, term | 10 years |
State | Maximum |  |
Operating Loss Carryforwards [Line Items] |  |
Net operating loss carryforward, term | 20 years |

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