Note 6 - Income Taxes - Current and Deferred Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Federal	$ 244,770	$ 106,004	$ 85,855
State and local	25,328	35,030	51,078
Foreign	8,380	0	0
Current Income Tax Expense (Benefit)	278,478	141,034	136,933
Federal	(88,016)	66,000	172,334
State and local	(1,832)	(434)	2,755
Deferred Income Tax Expense (Benefit)	(89,848)	65,566	175,089
Total tax expense/(benefit)	$ 188,630	$ 206,600	$ 312,022