Note 7 - Financial Instruments - Other Investments, at Fair Value (Details) - USD ($) $ in Thousands |
Mar. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Other Investments, Fair Value Disclosure | $ 32,137 | $ 35,262 |
| Restricted Equity Securities [Member] | ||
| Other Investments, Fair Value Disclosure | 11,165 | 10,632 |
| Corporate Bonds and Redeemable Preferred Stock [Member] | ||
| Other Investments, Fair Value Disclosure | 530 | 531 |
| CREO JV [Member] | ||
| Other Investments, Fair Value Disclosure | 6,503 | 6,432 |
| U.S. Insurance JV [Member] | ||
| Other Investments, Fair Value Disclosure | 2,548 | 2,825 |
| Equity Securities [Member] | ||
| Other Investments, Fair Value Disclosure | 1,167 | 1,954 |
| Equity Derivatives [Member] | ||
| Other Investments, Fair Value Disclosure | 73 | 73 |
| Fair Value Receivables [Member] | ||
| Other Investments, Fair Value Disclosure | 8,586 | 11,250 |
| Interest In SPVs [Member] | ||
| Other Investments, Fair Value Disclosure | $ 1,565 | $ 1,565 |