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Note 17 - Income Taxes - Reconciliation Between U.S. Federal Statutory Rate and Effective Rate (Details)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Statutory federal income tax rate 21.00% 21.00% 21.00%
State tax expense, net of federal benefit (3.20%) 1.50% 5.50%
Stock compensation 22.30% (2.20%) 0.60%
Section 162(m) limitation 8.70% 0.00% 0.30%
Goodwill impairment 0.00% (16.80%) 0.00%
Change in fair value of contingent consideration (36.70%) 6.70% 0.00%
Change in state apportionment (29.80%) 4.90% 0.00%
Federal, state and foreign tax credits (28.40%) 2.20% (1.50%)
Valuation allowance (35.30%) (3.00%) 0.00%
Other permanent items 11.00% 1.90% (1.20%)
Effective income tax rate (70.40%) 16.20% 24.70%