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Note 8 - OMIDRIA Royalty Obligation - Schedule of Royalty Obligation (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Non-cash interest | $ 4,052 | $ 7,916 | $ 21,498 | $ 23,781
Principal payments on OMIDRIA royalty obligation |  |  | (15,125) | $ (854)
Royalty Obligation [Member] |  |  |  |
OMIDRIA royalty obligation |  |  | 125,126 |
Additional proceeds |  |  | 115,525 |
Non-cash interest |  |  | (1,553) |
Principal payments on OMIDRIA royalty obligation |  |  | (15,125) |
OMIDRIA royalty obligation | $ 223,973 |  | $ 223,973 |

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