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Note 5 - Certain Balance Sheet Accounts (Tables) | 6 Months Ended
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Jun. 30, 2025
Notes Tables |
Schedule Of Contract Royalty Asset [Table Text Block] |
​ |  | June 30, |  |  | December 31, |
​ |  | 2025 |  |  | 2024 |
​ |  | (In thousands) |
Short-term contract royalty asset |  | $ | 28,221 |  |  | $ | 29,083 |
Long-term contract royalty asset |  |  | 114,735 |  |  |  | 124,266 |
Total OMIDRIA contract royalty asset |  | $ | 142,956 |  |  | $ | 153,349 |
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] |
​ |  | June 30, |  |  | December 31, |
​ |  | 2025 |  |  | 2024 |
​ |  | (In thousands) |
OMIDRIA royalty receivables |  | $ | 5,210 |  |  | $ | 6,940 |
Other receivables |  |  | 1,066 |  |  |  | 799 |
Total receivables |  | $ | 6,276 |  |  | $ | 7,739 |
Property, Plant and Equipment [Table Text Block] |
​ |  | June 30, |  |  | December 31, |
​ |  | 2025 |  |  | 2024 |
​ |  | (In thousands) |
Equipment under finance lease obligations |  | $ | 8,324 |  |  | $ | 8,323 |
Laboratory equipment |  |  | 3,732 |  |  |  | 3,690 |
Computer equipment |  |  | 1,113 |  |  |  | 1,113 |
Office equipment and furniture |  |  | 624 |  |  |  | 624 |
Total cost |  |  | 13,793 |  |  |  | 13,750 |
Less accumulated depreciation and amortization |  |  | (11,554 | ) |  |  | (11,072 | )
Total property and equipment, net |  | $ | 2,239 |  |  | $ | 2,678 |
Schedule of Accrued Liabilities [Table Text Block] |
​ |  | June 30, |  |  | December 31, |
​ |  | 2025 |  |  | 2024 |
​ |  | (In thousands) |
Employee compensation |  | $ | 11,424 |  |  | $ | 8,868 |
Clinical trials |  |  | 8,141 |  |  |  | 7,100 |
Contract research and development |  |  | 2,743 |  |  |  | 4,334 |
Interest payable |  |  | 2,041 |  |  |  | 2,667 |
Consulting and professional fees |  |  | 1,593 |  |  |  | 2,602 |
Other accrued expenses |  |  | 335 |  |  |  | 434 |
Total accrued expenses |  | $ | 26,277 |  |  | $ | 26,005 |

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