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Note 11 - Patent Rights (Details Textual) - USD ($) $ in Thousands |  |  | 3 Months Ended
--- | --- | --- | ---
Aug. 18, 2021 | May 12, 2021 | Feb. 28, 2022 | Feb. 28, 2021
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 |  |
Patents [Member] |  |  |  |
Amortization of Intangible Assets, Total |  |  | $ 60 | $ 20
Patents [Member] | Purchase and Sale Agreement with Andre Buys [Member] |  |  |  |
Finite-lived Intangible Assets Acquired |  |  | $ 900 |
Patents [Member] | Maximum [Member] | Purchase and Sale Agreement with Andre Buys [Member] |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) |  |  | 20 years |
Patents [Member] | Minimum [Member] | Purchase and Sale Agreement with Andre Buys [Member] |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) |  |  | 15 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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