Note 11 - Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Gross unrecognized tax benefits at the beginning of the year | $ 691,481 | $ 707,632 |
| Increases related to current year positions | 0 | 0 |
| Increases (decreases) related to prior year positions | 34,720 | 2,116 |
| Increases (decreases) related to prior year positions | (34,720) | (2,116) |
| Expiration of unrecognized tax benefits | (176,578) | (14,035) |
| Gross unrecognized tax benefits at the end of the year | $ 549,623 | $ 691,481 |