Note 17 - Income Taxes - Reconciliation Between U.S. Federal Statutory Rate and Effective Rate (Details)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Statutory federal income tax rate	21.00%	21.00%	21.00%
State tax expense, net of federal benefit	(52.20%)	9.50%	13.00%
Stock compensation	(17.20%)	11.80%	18.40%
Section 162(m) limitation	(30.10%)	28.30%	35.40%
Change in tax rates and state apportionment	10.40%	0.00%	(3.00%)
Federal, state and foreign tax credits	22.50%	(23.10%)	(13.30%)
Valuation allowance	(157.30%)	173.00%	0.00%
Return to provision adjustments	5.50%	(3.60%)	(18.90%)
Tax reserves	(20.90%)	0.00%	0.00%
Other permanent items	(1.10%)	(7.90%)	(3.50%)
Effective income tax rate	(219.40%)	209.00%	49.10%