Note 6 - Income Taxes - Reconciliation of Income Tax Expense (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income tax at federal statutory rate		$ 166,764	$ 159,498	$ 196,326
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		21.00%	21.00%	21.00%
State tax, net of federal effect	[1]	$ 32,159	$ 31,114	$ 37,594
State tax, net of federal effect	[1]	4.10%	4.10%	4.00%
Foreign tax Effects		$ 0	$ 5,895	$ (1,002)
Foreign tax Effects		0.00%	0.80%	(0.10%)
Total tax expense		$ 10,043	$ 1,754	$ 3,829
Total tax expense		(1.30%)	(0.20%)	(0.40%)
Total tax expense		$ (10,043)	$ (1,754)	$ (3,829)
Federal 1341 claim		$ 18,090
Federal 1341 claim		2.30%
Other		$ 6,276	$ 9,956	$ 2,476
Other		0.80%	1.30%	0.30%
Changes in unrecognized tax benefits:		$ (17,547)	$ (12,648)	$ (21,968)
Changes in unrecognized tax benefits:		(2.20%)	(1.70%)	(2.40%)
Other, net		$ 131	$ (3,431)	$ (2,997)
Other, net		0.00%	(0.50%)	(0.30%)
Total tax expense/(benefit)		$ 195,830	$ 188,630	$ 206,600
Effective Tax Rate		24.70%	24.80%	22.10%

[1] State taxes for California, Illinois, Indiana, New York & Pennsylvania for 2025, and California, Illinois, New York & Pennsylvania for 2024 and 2023 made up the majority (greater than 50%) of the tax effect in this category.