Note 17 - Common Stock (Details Textual) - USD ($) $ / shares in Units, $ in Millions |
3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Dividends, Common Stock | $ 3.5 | $ 3.5 | $ 3.5 | |
| Common Class A [Member] | ||||
| Dividends declared (in dollars per share) | $ 0.06 | $ 0.24 | $ 0.24 | $ 0.24 |
| Common Class B [Member] | ||||
| Dividends declared (in dollars per share) | $ 0.07 | $ 0.28 | $ 0.28 | $ 0.28 |