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Note 15 - Stockholders' Equity (Details Textual) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Feb. 28, 2025 | Dec. 31, 2024 | Oct. 31, 2023
Dividends Payable, Current | $ 74.7 |  | $ 74.7 |  |  | $ 59.8 |
Accrued Dividend Equivalents | $ 8.6 |  | $ 8.6 |  |  | $ 5.8 |
Stock Repurchased and Retired During Period, Shares (in shares) | 2,000 | 6,000 | 6,000 | 19,000 |  |  |
Payments for Repurchase of Common Stock | $ 2.1 | $ 5.5 | $ 4.7 | $ 14.2 |  |  |
Share Repurchase Program, Remaining Authorized, Amount | $ 495.3 |  | $ 495.3 |  |  |  |
Maximum [Member] |  |  |  |  |  |  |
Share Repurchase Program, Authorized, Amount |  |  |  |  | $ 500.0 |  | $ 640.0

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