Note 13 - Stockholders' Equity (Details Textual) - USD ($) shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025	Feb. 28, 2025
Dividends Payable, Current	$ 98.3		$ 76.0
Accrued Dividend Equivalents	$ 8.0		$ 9.4
Stock Repurchased and Retired During Period, Shares (in shares)	0	0
Maximum [Member]
Share Repurchase Program, Authorized, Amount				$ 500.0