Note 6 - Income Taxes - Summary of Income Tax Contingencies (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022		Dec. 31, 2021		Dec. 31, 2020
Balance		$ 333,653	[1]	$ 351,047	[1]	$ 414,042
Additions based on tax positions related to a prior year		10,155		18,515		2,223
Settlement and lapse of statute of limitations		(167,170)		(35,962)		(64,458)
Reductions based on tax positions related to a prior year						(760)
Additions based on tax positions related to the current year		744		53
Balance	[1]	$ 177,382		$ 333,653		$ 351,047

[1] The gross balance reported as uncertain tax positions is largely offset by $322.1 million of foreign tax credits and other tax attributes.