Income Taxes

3 Months Ended

Mar. 31, 2016

Income Tax Disclosure [Abstract]

Income Tax Disclosure [Text Block]

Note 7. Income Taxes

We generally calculate our effective income tax rate at the end of an interim period using an estimate of the annualized effective income tax rate expected to be applicable for the full fiscal year. However, when a reliable estimate of the annualized effective income tax rate cannot be made, we compute our provision for income taxes using the actual effective income tax rate for the results of operations reported within the year-to-date periods. Our effective income tax rate is highly influenced by relative income or losses reported and the amount of the nondeductible stock-based compensation associated with grants of our common stock options and historically from the results of foreign operations. A small change in estimated annual pretax income (loss) can produce a significant variance in the annualized effective income tax rate given the expected amount of these items. As a result, we have computed our provision for income taxes for the three month periods ended March 31, 2016 and 2015 by applying the actual effective tax rates to income reported within the condensed consolidated financial statements through those periods.