Income Taxes	6 Months Ended
Jun. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Note 9. Income Taxes Our effective tax rate was 29% for the three and six months ended June 30, 2017. Our effective tax rate was 48% and 2% for the three and six months ended June 30, 2016, respectively. The loss on extinguishment of our Senior Notes impacted the 2017 tax rate and was treated as a discrete item during the three months ended June 30, 2017. The 2016 effective rate was impacted by changes in forecasted income and loss and driven by the application of the three- and six-month results against the permanent book to tax differences. The effective tax rates for 2017 and 2016 differ from the U.S. federal statutory rate of 34% due primarily to our earnings outside the United States that are indefinitely reinvested and taxed at rates lower than the U.S. federal statutory rate. Management believes that it is reasonably possible that the amount of unrecognized income tax benefits and interest may decrease during the next 12 months by approximately $0.6 million related to the expiration of the statutes of limitations, of which $0.5 million would reduce income tax expense.

Income Taxes

6 Months Ended

Jun. 30, 2017

Note 9. Income Taxes

Our effective tax rate was 29% for the three and six months ended June 30, 2017. Our effective tax rate was 48% and 2% for the three and six months ended June 30, 2016, respectively. The loss on extinguishment of our Senior Notes impacted the 2017 tax rate and was treated as a discrete item during the three months ended June 30, 2017. The 2016 effective rate was impacted by changes in forecasted income and loss and driven by the application of the three- and six-month results against the permanent book to tax differences. The effective tax rates for 2017 and 2016 differ from the U.S. federal statutory rate of 34% due primarily to our earnings outside the United States that are indefinitely reinvested and taxed at rates lower than the U.S. federal statutory rate.

Management believes that it is reasonably possible that the amount of unrecognized income tax benefits and interest may decrease during the next 12 months by approximately $0.6 million related to the expiration of the statutes of limitations, of which $0.5 million would reduce income tax expense.