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Note 7 - Income Taxes - Income Tax Rate Reconciliation (Details)
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Statutory Federal income tax rate 21.00% 21.00%
State and local income taxes, net of Federal income tax benefit 3.00% 3.60%
Current year untaxed foreign income (7.60%) (6.50%)
Foreign taxes 2.30% 4.60%
GILTI tax 1.80% 3.00%
Compensation related 0.60% 1.10%
Federal tax credits (0.50%) (0.60%)
Other (0.40%) 0.00%
Effective income tax rate 20.20% 26.20%