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Note 8 - Royalty Monetizations (Tables) | 12 Months Ended
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Dec. 31, 2021
Notes Tables |
Royalty Financing Obligations [Table Text Block] |
|  | 2020 RPI Royalty Agreement |  |  | 2021 RPI Royalty Agreement |  |  | OMERS Royalty Agreement |  |  | Total |
2020 Royalty sale: Royalty financing obligation, net of issuance costs |  | $ | 122,609 |  |  | $ | − |  |  | $ | − |  |  | $ | 122,609 |
Non-cash Interest expense on Royalty financing obligation |  |  | 2,108 |  |  |  | − |  |  |  | − |  |  |  | 2,108 |
Balance as of December 31, 2020 |  | $ | 124,717 |  |  | $ | − |  |  | $ | − |  |  | $ | 124,717 |
2021 Royalty sale: Royalty financing obligations, net of issuance costs |  |  | − |  |  |  | 150,833 |  |  |  | 147,309 |  |  |  | 298,142 |
Non-cash Interest expense on Royalty financing obligations |  |  | 33,308 |  |  |  | 2,897 |  |  |  | 1,465 |  |  |  | 37,670 |
Royalty revenues paid and payable |  |  | (10,801 | ) |  |  | (353 | ) |  |  | − |  |  |  | (11,154 | )
Balance as of December 31, 2021 |  | $ | 147,224 |  |  | $ | 153,377 |  |  | $ | 148,774 |  |  | $ | 449,375 |
Effective interest rate |  |  | 27.3 | % |  |  | 16.5 | % |  |  | 8.5 | % |  |  |  |

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- Definition Tabular disclosure for royalty financing obligations. + References No definition available. + Details
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