Note 8 - Income Taxes

9 Months Ended

Sep. 30, 2017

Income Tax Disclosure [Abstract]

Income Tax Disclosure [Text Block]

Note 8 — Income Taxes

As of September 30, 2017, our annual estimated effective income tax benefit rate was 55.9%, which reflects the combined impact of the Company’s pre-tax loss position combined with the recognition of tax credits. The annual estimated effective tax rate for 2017 differs from the statutory rate due primarily to state investment tax credits, federal credits and foreign tax credits. As of September 30, 2016, our annual estimated effective income tax rate was 32.25%. The annual estimated effective tax rate for 2016 differed from the statutory rate primarily due to state investment tax credits, federal credits and foreign tax credits.