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Note 10 - Related-party Transactions (Details Textual) - USD ($) $ in Thousands |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | --- | ---
Aug. 31, 2024 | Aug. 30, 2024 | Jun. 30, 2025 | Mar. 31, 2025 | Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Revenue from Contract with Customer, Excluding Assessed Tax |  |  |  |  | $ 22,459 | $ 10,324 | $ 58,669 | $ 27,364
Cost of Product and Service Sold |  |  |  |  | 14,604 | 4,022 | 29,029 | 10,429
Selenix [Member] | Messa Holdings LLC [Member] |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  | 50.00% |  |  |  |  |
Selenix [Member] | Selenix Agreement [Member] |  |  |  |  |  |  |  |
Related Party Transaction, Amounts of Transaction |  |  | $ 675 |  |  |  |  |
Chief Executive Officer [Member] | Messa Holdings LLC [Member] |  |  |  |  |  |  |  |
Ownership Percentage |  |  | 100.00% |  |  |  |  |
DS-200 [Member] | Selenix [Member] | Selenix Agreement [Member] |  |  |  |  |  |  |  |
Commitment, Allocation of Profits, Percentage | 45.00% | 50.00% |  |  |  |  |  |
License [Member] |  |  |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax |  |  |  |  | 0 | 500 | 3,286 | 500
Cost of Product and Service Sold |  |  |  |  | $ 0 | $ 270 | $ 825 | $ 270
License [Member] | Selenix [Member] | Selenix Agreement [Member] |  |  |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax |  |  |  | $ 1,500 |  |  |  |
Cost of Product and Service Sold |  |  |  | $ 675 |  |  |  |

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