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Note 12 - Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Statutory expense rate 21.00% 21.00%
Federal valuation allowance (4.40%) (132.00%)
Global intangible low-taxed income 0.80% 9.60%
Interest and penalties related to uncertain tax positions and IRS settlement adjustment 0.60% (27.20%)
Foreign taxes, net of valuation allowance (0.50%) (8.20%)
Permanent and other prior year true ups and tax effect of non-controlling interest (1.10%) 4.70%
State taxes, net of valuation allowance 1.10% 13.50%
Effective expense (benefit) rate 17.50% (118.60%)