| Other Liabilities [Table Text Block] |
| | | Year ended
December 31, 2021 | | | Period from
inception to
December 31, 2021 | |
| Liability related to sale of future royalties — beginning balance | | $ | 88,471 | | | $ | — | |
| Proceeds from sale of future royalties | | | — | | | | 61,184 | |
| Non-cash royalty revenue | | | (145 | ) | | | (1,083 | ) |
| Non-cash interest (income) expense recognized | | | (3,038 | ) | | | 25,187 | |
| Liability related to sale of future royalties as of December 31, 2021 | | $ | 85,288 | | | $ | 85,288 | |
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