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Note 1 - Significant Nature of Operations (Details Textual) $ in Thousands, $ in Millions |  |  |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Nov. 27, 2024 USD ($) | Nov. 25, 2024 USD ($) | Aug. 19, 2024 USD ($) | Aug. 31, 2024 CAD ($) | Apr. 30, 2024 CAD ($) | Feb. 29, 2024 CAD ($) | Dec. 31, 2023 CAD ($) | Feb. 28, 2023 CAD ($) | Apr. 30, 2022 CAD ($) | Mar. 31, 2022 CAD ($) | Dec. 31, 2024 CAD ($) | Dec. 31, 2023 CAD ($) | Dec. 31, 2022 CAD ($)
Statement Line Items [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Retained earnings |  |  |  |  |  |  | $ (245,445) |  |  |  | $ (274,892) | $ (245,445) | $ (180,779)
Proceeds from private placement |  | $ 1 |  |  |  |  |  |  |  |  |  |  |
Government loan [member] |  |  |  |  |  |  |  |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  | 4,299 |  |  |  | 7,824 | 4,299 | 3,777
The 2027 notes [member] |  |  |  |  |  |  |  |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from borrowings, classified as financing activities | $ 4 |  |  |  |  |  |  |  |  |  | 5,498 | $ 0 | $ 0
Federal Economic Development for Northern Ontario [member] |  |  |  |  |  |  |  |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from government grants, classified as financing activities |  |  |  |  |  |  | $ 4,000 |  |  |  |  |  |
Proceeds from borrowings, classified as financing activities |  |  |  | $ 1,000 | $ 2,000 | $ 2,267 |  | $ 250 |  |  |  |  |
Federal Economic Development for Northern Ontario [member] | Government loan [member] |  |  |  |  |  |  |  |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |  |  |  |  | $ 5,267 |  |
Proceeds from borrowings, classified as financing activities |  |  |  |  |  | $ 2,267 |  | $ 250 | $ 1,000 | $ 2,000 |  |  |
U.S. Department of Defense (“DoD”) [member] |  |  |  |  |  |  |  |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from government grants, classified as financing activities |  |  | $ 20 |  |  |  |  |  |  |  |  |  |

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