Note 8 - Fair Value Disclosures (Details Textual) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2024 |
|
| Other Investment Sold, Gain (Loss), Fair Value | $ (16,219) | $ (28,924) |
| Other Investment Sold, Not yet Purchased, Gain (Loss) | $ 802 | $ 9,426 |