Income Taxes	9 Months Ended
Sep. 30, 2016
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes We utilize our estimated annual effective tax rate to determine our provision for income taxes for interim periods. The income tax provision is computed by taking the estimated annual effective tax rate and multiplying it by the year-to-date pre-tax book income. We recorded income tax expense of $0.4 million and $2.2 million for the three months ended September 30, 2016 and 2015, respectively. Our effective tax rate was 5.1% and 25.8% during the three months ended September 30, 2016 and 2015, respectively. Our effective tax rate was lower in the current year period primarily due to the recording of $1.8 million in tax refunds during the three months ended September 30, 2016, of which $1.4 million related to tax incentives in China for 2015 and $0.4 million related to certain deductible research and development expenses incurred in China during 2015. This impact was partially offset by the recording of a $0.7 million decrease to the carrying value of certain deferred tax assets to reflect the lower statutory tax rate that will be applied as a result of tax incentives at one of our China manufacturing facilities. We recorded income tax expense of $3.0 million and $5.6 million for the nine months ended September 30, 2016 and 2015, respectively. Our effective tax rate was 14.7% and 22.1% during the nine months ended September 30, 2016 and 2015, respectively. Our effective tax rate was lower in the current year period primarily due to (a) the recording of an additional $1.3 million in tax refunds during the nine months ended September 30, 2016, of which $0.9 million related to tax incentives in China for previous tax years and $0.4 million related to certain deductible research and development expenses incurred in China during 2015; and (b) lower tax rates in certain jurisdictions within China due to local tax incentives. These impacts were partially offset by the recording of a $0.7 million decrease to the carrying value of certain deferred tax assets to reflect the lower statutory tax rate that will be applied as a result of tax incentives at one of our China manufacturing facilities. At September 30, 2016, we had gross unrecognized tax benefits of $3.7 million, including interest and penalties, of which $2.1 million would affect the annual effective tax rate if these tax benefits are realized. Further, we are unaware of any positions for which it is reasonably possible that the total amount of unrecognized tax benefits will significantly change within the next twelve months. However, based on federal, state and foreign statute expirations in various jurisdictions, we anticipate a decrease in unrecognized tax benefits of approximately $0.1 million within the next twelve months. We have classified uncertain tax positions as non-current income tax liabilities unless expected to be paid within one year. We have elected to classify interest and penalties as a component of tax expense. Accrued interest and penalties of $0.3 million and $0.2 million at September 30, 2016 and December 31, 2015, respectively, are included in our unrecognized tax benefits. We file income tax returns in the U.S. federal jurisdiction, and in various state and foreign jurisdictions. On September 30, 2016, the open statutes of limitations in our significant tax jurisdictions were as follows: federal 2013 through 2015, state 2011 through 2015, and foreign 2009 through 2015.

Income Taxes

We utilize our estimated annual effective tax rate to determine our provision for income taxes for interim periods. The income tax provision is computed by taking the estimated annual effective tax rate and multiplying it by the year-to-date pre-tax book income.

We recorded income tax expense of $0.4 million and $2.2 million for the three months ended September 30, 2016 and 2015, respectively. Our effective tax rate was 5.1% and 25.8% during the three months ended September 30, 2016 and 2015, respectively. Our effective tax rate was lower in the current year period primarily due to the recording of $1.8 million in tax refunds during the three months ended September 30, 2016, of which $1.4 million related to tax incentives in China for 2015 and $0.4 million related to certain deductible research and development expenses incurred in China during 2015. This impact was partially offset by the recording of a $0.7 million decrease to the carrying value of certain deferred tax assets to reflect the lower statutory tax rate that will be applied as a result of tax incentives at one of our China manufacturing facilities.

We recorded income tax expense of $3.0 million and $5.6 million for the nine months ended September 30, 2016 and 2015, respectively. Our effective tax rate was 14.7% and 22.1% during the nine months ended September 30, 2016 and 2015, respectively. Our effective tax rate was lower in the current year period primarily due to (a) the recording of an additional $1.3 million in tax refunds during the nine months ended September 30, 2016, of which $0.9 million related to tax incentives in China for previous tax years and $0.4 million related to certain deductible research and development expenses incurred in China during 2015; and (b) lower tax rates in certain jurisdictions within China due to local tax incentives. These impacts were partially offset by the recording of a $0.7 million decrease to the carrying value of certain deferred tax assets to reflect the lower statutory tax rate that will be applied as a result of tax incentives at one of our China manufacturing facilities.

At September 30, 2016, we had gross unrecognized tax benefits of $3.7 million, including interest and penalties, of which $2.1 million would affect the annual effective tax rate if these tax benefits are realized. Further, we are unaware of any positions for which it is reasonably possible that the total amount of unrecognized tax benefits will significantly change within the next twelve months. However, based on federal, state and foreign statute expirations in various jurisdictions, we anticipate a decrease in unrecognized tax benefits of approximately $0.1 million within the next twelve months. We have classified uncertain tax positions as non-current income tax liabilities unless expected to be paid within one year.

We have elected to classify interest and penalties as a component of tax expense. Accrued interest and penalties of $0.3 million and $0.2 million at September 30, 2016 and December 31, 2015, respectively, are included in our unrecognized tax benefits.

We file income tax returns in the U.S. federal jurisdiction, and in various state and foreign jurisdictions. On September 30, 2016, the open statutes of limitations in our significant tax jurisdictions were as follows: federal 2013 through 2015, state 2011 through 2015, and foreign 2009 through 2015.