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Marketable Securities (Tables) | 12 Months Ended
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Dec. 31, 2023
Disclosure Of Marketable Securities [Abstract] |
Disclosure Of marketable securities [Table Text Block] |
|  | Total |
Balance at December 31, 2021 |  | $ | 605 |
Additions |  |  | 110 |
Unrealized net loss |  |  | (135 | )
Balance at December 31, 2022 |  | $ | 582 |
Additions |  |  | 1,619 |
Sale of marketable securities |  |  | (381 | )
Realized gain on disposition |  |  | 293 |
Unrealized net loss |  |  | (947 | )
Balance at December 31, 2023 |  | $ | 1,166 |

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