Note 6 - Income Taxes - Summary of Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024		Dec. 31, 2023		Dec. 31, 2022
Balance	$ 13,686	[1]	$ 177,382	[1]	$ 333,653
Additions based on tax positions related to the current year	5,909		212		744
Additions based on tax positions related to a prior year	53		1,869		10,155
Settlement and lapse of statute of limitations	(3,551)		(165,065)		(167,170)
Reductions based on tax positions related to a prior year	(889)		(712)
Balance	$ 15,208		$ 13,686	[1]	$ 177,382	[1]

[1] The gross balance reported as uncertain tax positions is largely offset by $157.7 million of foreign tax credits and other tax attributes.