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Note 12 - Revenue From Product Sales (Details Textual) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2026 | Mar. 31, 2025 | Dec. 31, 2025
Concentration Risk, Number of Customers | 2 |  |
Revenue Benchmark [Member] | Customer Concentration Risk [Member] |  |  |
Concentration Risk, Number of Customers | 2 | 2 |
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Largest Customer [Member] |  |  |
Concentration Risk, Percentage | 58.00% | 85.00% |
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Largest Customer [Member] |  |  |
Concentration Risk, Percentage | 48.00% |  | 59.00%

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