Note 12 - Income Taxes - Income Tax Rate Reconciliation (Details)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
U.S. statutory federal tax rate	21.00%	21.00%	21.00%
Foreign income at lower rates	(21.40%)	(21.90%)	(22.80%)
U.S. tax impact of foreign earnings and losses	15.10%	14.50%	16.30%
Changes in valuation allowance	626.60%	2.90%	0.20%
Stock-based compensation	1.90%	2.20%	2.80%
Return to provision true-up adjustment	(0.10%)	(2.00%)	0.00%
Tax attributes, net of reserves	(247.20%)	(1.30%)	(1.00%)
Effects of intercompany transactions	(608.50%)	0.00%	0.00%
Other adjustments	0.70%	0.10%	0.10%
Effective tax rate	(211.90%)	15.50%	16.60%