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Note 9 - Patent Rights (Details Textual) - USD ($) $ in Thousands |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | ---
Aug. 18, 2021 | May 12, 2021 | Dec. 18, 2019 | Apr. 13, 2018 | Nov. 30, 2021 | Nov. 30, 2020
Payments to Acquire Intangible Assets |  |  |  |  | $ 138 | $ 80
Stock Issued During Period, Value, Purchase of Assets |  |  |  |  |  | 693
Purchase and Sale Agreement with Andre Buys [Member] |  |  |  |  |  |
Deferred Compensation Arrangement with Individual, Distribution Paid |  |  |  | $ 100 |  |
Legal Costs to Transfer Patent Rights |  |  |  | 10 |  |
Payments to Acquire Intangible Assets |  |  |  | $ 100 |  |
Term for Second Payment (Year) |  |  |  | 2 years |  |
Maximum [Member] | Purchase and Sale Agreement with Andre Buys [Member] |  |  |  |  |  |
Deferred Compensation Arrangement with Individual, Cash Award Granted, Amount |  |  |  | $ 800 |  |
Minimum [Member] | Purchase and Sale Agreement with Andre Buys [Member] |  |  |  |  |  |
Deferred Compensation Arrangement with Individual, Cash Award Granted, Amount |  |  |  | $ 500 |  |
Kore [Member] |  |  |  |  |  |
Payments to Acquire Productive Assets, Total |  | $ 3,500 |  |  |  |
Asset Acquisition, Consideration Transferred, Transaction Cost |  | 200 |  |  |  |
Asset Acquisition, Consideration Transferred, Total |  | 3,700 |  |  |  |
Capitalized Key Patents and Intellectual Property Acquired |  | $ 2,800 |  |  |  |
Ballistipax [Member] |  |  |  |  |  |
Asset Acquisition, Consideration Transferred, Total | $ 342 |  |  |  |  |
Patents [Member] |  |  |  |  |  |
Amortization of Intangible Assets, Total |  |  |  |  | 200 | 40
Impairment of Intangible Assets, Finite-lived |  |  |  |  | 0 | $ 0
Patents [Member] | Purchase and Sale Agreement with Andre Buys [Member] |  |  |  |  |  |
Deferred Compensation Arrangement with Individual, Award Granted, Amount |  |  | $ 800 |  |  |
Stock Issued During Period, Value, Purchase of Assets |  |  | $ 700 |  |  |
Stock Issued During Period, Shares, Purchase of Assets (in shares) |  |  | 386,681 |  |  |
Cash Payment |  |  |  |  | $ 80 |
Patents [Member] | Maximum [Member] |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) |  |  |  |  | 17 years |
Patents [Member] | Maximum [Member] | Purchase and Sale Agreement with Andre Buys [Member] |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) |  |  |  |  | 15 years |
Patents [Member] | Minimum [Member] |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) |  |  |  |  | 15 years |
Patents [Member] | Minimum [Member] | Purchase and Sale Agreement with Andre Buys [Member] |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) |  |  |  |  | 20 years |
Patents [Member] | Kore [Member] | Maximum [Member] |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) |  |  |  |  | 20 years |
Patents [Member] | Kore [Member] | Minimum [Member] |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) |  |  |  |  | 15 years |
Patents [Member] | Ballistipax [Member] |  |  |  |  |  |
Finite-lived Intangible Assets Acquired | $ 60 |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 17 years |  |  |  |  |

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