Note 7 - Investments, Including Investments Accounted for Using the Equity Method - Schedule of Investments (Details) - USD ($) $ in Thousands |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Short-term Investments | $ 3,551 | $ 4,988 |
| Long-term investments | 40,935 | 46,316 |
| Common Stock Warrants of Sky Harbour Group Corporation [Member] | ||
| Short-term Investments | 3,551 | 4,988 |
| Special Purpose Entities [Member] | ||
| Long-term investments | 18,877 | 24,258 |
| My Bundle TV Inc. [Member] | ||
| Long-term investments | 3,000 | 3,000 |
| Voting Common Stock of Privately Held Company CB&T Holding Corporation [Member] | ||
| Long-term investments | $ 19,058 | $ 19,058 |