Note 11 - Income Taxes - Unrecognized Tax Benefits Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Balance	$ 49,277	$ 41,521	$ 33,499
Increase for tax position of current year	14,108	10,965	9,191
Decrease for tax position of prior year	(1,008)		(657)
Decrease due to settlement with tax authorities		(970)	(54)
Decrease due to lapse of statute of limitation	(1,926)	(2,486)	(458)
Increase for tax position of prior year	2,209	247
Balance	$ 62,660	$ 49,277	$ 41,521