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Note 13 - Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Statutory federal expense rate 21.00% 21.00%
Share-based compensation, net of executive compensation deduction limitations (1.40%) 0.00%
Global intangible low-taxed income tax 0.10% 0.20%
Net interest and penalties related to uncertain tax positions and unpaid tax liabilities (including reversals thereof from IRS settlement in 2020) 0.00% (0.60%)
Interest expense on preferred stock classified as debt for tax purposes (1.60%) (2.60%)
Foreign taxes, net of valuation allowance effects (0.10%) (0.20%)
State taxes, net of valuation allowance effects 1.60% (0.10%)
Prior year provision to return reconciling items, tax effects of non-controlling interests, and other (0.60%) 0.20%
Effective tax expense rate 19.00% 17.90%