Note 10 - Income Taxes - Reconciliation of Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Beginning balance	$ 134	$ 141	$ 1,088
Additions based on tax positions related to the current year	0	0	0
Reduction for tax positions of prior years	0	0	(12)
Reduction for settlements	0	0	(935)
Expiration of applicable statute of limitations	(14)	(7)	0
Ending balance	$ 120	$ 134	$ 141