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Financial instruments (Tables) | 12 Months Ended
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Dec. 31, 2023
Financial Instruments |
Disclosure Of Detailed Information About Financial Instruments By Category [Table Text Block] |
|  | At December 31, 2023 |  |  | At December 31, 2022 |  |  | At December 31, 2021 |
| Amortized Cost |  |  | FVTPL |  |  | Total |  |  | Amortized Cost |  |  | FVTPL |  |  | Total |  |  | Amortized Cost |  |  | FVTPL |  |  | Total |
Cash | $ | 7,313 |  | $ | - |  | $ | 7,313 |  | $ | 10,309 |  | $ | - |  | $ | 10,309 |  | $ | 3,259 |  | $ | - |  | $ | 3,259 |
Marketable securities |  | - |  |  | 1,166 |  |  | 1,166 |  |  | - |  |  | 582 |  |  | 582 |  |  | - |  |  | 605 |  |  | 605 |
Deposits |  | 100 |  |  | - |  |  | 100 |  |  | 25 |  |  | - |  |  | 25 |  |  | 243 |  |  | - |  |  | 243 |
Accounts receivable |  | 374 |  |  | - |  |  | 374 |  |  | 369 |  |  | - |  |  | 369 |  |  | 372 |  |  | - |  |  | 372 |
Total financial assets | $ | 7,787 |  | $ | 1,166 |  | $ | 8,953 |  | $ | 10,703 |  |  | 582 |  | $ | 11,285 |  | $ | 3,874 |  |  | 605 |  | $ | 4,479 |
Accounts payable and accrued liabilities |  | 1,034 |  |  | - |  |  | 1,034 |  |  | 1,148 |  |  | - |  |  | 1,148 |  |  | 1,888 |  |  | - |  |  | 1,888 |
Total financial liabilities | $ | 1,034 |  | $ | - |  | $ | 1,034 |  | $ | 1,148 |  | $ | - |  | $ | 1,148 |  | $ | 1,888 |  | $ | - |  | $ | 1,888 |
Disclosure of significant unobservable inputs used in fair value measurement of equity [Table Text Block] |
| At December 31
|  | 2023 |  |  | 2022 |  |  | 2021 |
|  | Level 1 |  |  | Level 1 |  |  | Level 1 |  |  | Level 2(a) |
Marketable securities | $ | 1,166 |  | $ | 582 |  | $ | 282 |  | $ | 323 |
(a) Marketable securities included in level 2 include warrants that were valued using an option pricing model which utilizes a combination of quoted prices and market-derived inputs, including volatility estimates.
Disclosure of maturity analysis for derivative financial liabilities [Table Text Block] |
|  | Within 1 year |  |  | 2 to 3 years |  |  | Over 3 years |  |  | At December 31 2023 |
Accounts payable and accrued liabilities | $ | 1,034 |  | $ | - |  | $ | - |  | $ | 1,034 |
Quebec flow-through expenditure requirements |  | 1,223 |  |  | - |  |  | - |  |  | 1,223 |
Undiscounted lease payments |  | 189 |  |  | 64 |  |  | - |  |  | 253 |
Total | $ | 2,446 |  | $ | 64 |  | $ | - |  | $ | 2,510 |
Disclosure of foreign currency exposure related to its financial assets and liabilities [Table Text Block] |
|  | Years ended December 31 |
| 2023 |  |  | 2022 |  |  | 2021 |
Financial assets |  |  |  |  |  |  |  |  |
US$ bank accounts | $ | 1 |  | $ | 1 |  | $ | 569 |
Financial liabilities |  |  |  |  |  |  |  |  |
Accounts payable |  | (7 | ) |  | (61 | ) |  | (160 | )
| $ | (6 | ) | $ | (60 | ) | $ | 409 |

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- Definition The disclosure of significant inputs for which market data are not available and that are developed using the best information available about the assumptions that market participants would use when measuring the fair value of the entity's own equity instruments. [Refer: Entity's own equity instruments [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2023-01-01 -Paragraph 93 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2023-en-r&anchor=para_93_d&doctype=Standard -URIDate 2023-03-23 + Details
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