Note 11 - Income Taxes - Unrecognized Tax Benefits Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Gross unrecognized tax benefits, beginning of year	$ 16,569	$ 15,937	$ 15,109
Increases in tax positions for current year	1,171	1,290	1,469
Increases in tax positions for prior years	0	0	91
Lapse in statute of limitations	(615)	(658)	(732)
Gross unrecognized tax benefits, end of year	$ 17,125	$ 16,569	$ 15,937