Note 6 - Income Taxes - Components of Income Tax Expense Benefit (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Current, federal	$ 148	$ 0	$ 0
Current, state	11	1	8
Current, non-U.S.	52,864	43,215	19,842
Current, total	53,023	43,216	19,850
Deferred, federal	0	0	0
Deferred, state	0	0	0
Deferred, non-U.S.	(2,807)	92	36
Deferred, total	(2,807)	92	36
Federal	148	0	0
State	11	1	8
Non-U.S.	50,057	43,307	19,878
Income Tax Expense (Benefit)	$ 50,216	$ 43,308	$ 19,886