XML 91 R72.htm IDEA: XBRL DOCUMENT v3.22.0.1
Note 12 - Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Federal statutory rate 21.00% 21.00% 21.00%
State taxes 3.10% 1.60% 1.50%
Stock-based compensation 10.30% 4.80% 4.00%
Excess tax benefits related to stock-based compensation (5.40%) (13.80%) (11.20%)
Foreign source income 0.40% 0.20% 0.10%
Change in valuation allowance 0.20% 0.80% 1.10%
Foreign-derived intangible income deduction (7.00%) (1.70%) 0.00%
Federal and state research and development credit (1.90%) (2.60%) (3.70%)
Other (0.10%) 0.00% 0.40%
Income tax provision 20.60% 10.30% 13.20%