Note 15 - Income Taxes - Effective Income Tax Rate Reconciliation (Details)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Federal tax provision	21.00%	21.00%
State taxes (net of federal benefit)	2.50%	4.60%
Valuation allowance	(18.30%)	(20.60%)
Incentive stock compensation expense	(1.40%)	(1.80%)
Section 162(m) compensation	(1.20%)	(1.40%)
GILTI	(1.90%)	(1.90%)
Uncertain tax positions	0.00%	9.80%
Other	(1.80%)	1.70%
Total	(1.10%)	11.40%