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Note 12 - Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Statutory federal expense rate 21.00% 21.00%
Share-based compensation (0.10%) (2.30%)
Section 162(m) of the Code executive compensation deduction limitations 0.20% 2.30%
Net interest and penalties related to uncertain tax positions and unpaid tax liabilities 0.10% 0.10%
Interest expense on preferred stock classified as debt for tax purposes (2.30%) (2.60%)
Foreign taxes (0.20%) (0.20%)
State taxes, net of valuation allowance changes affecting the provision of income taxes and federal tax benefit 3.00% 2.40%
Prior year provision to return reconciling items, tax effects of non-controlling interests, and other (0.10%) (0.40%)
Global intangible low-taxed income tax 0.30% 0.30%
Loss on foreign subsidiary liquidation (1.50%) 0.00%
Effective income tax expense rate 20.40% 20.60%