Income Taxes	6 Months Ended
Jun. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company's effective tax rate for the second quarter of 2017 was a benefit of 7.7%, which differs from the U.S. federal statutory rate of 35% primarily due to a significant tax benefit of approximately 34.4% related to certain share-based payments related to the adoption of ASU 2016-09 as well as profitability in more favorable tax jurisdictions and benefits associated with U.S. tax credits for research and development and the manufacturing deduction. The Company's effective tax rate for the second quarter of 2016 of 33.8% differs from the U.S. federal statutory rate of 35% primarily due to profitability in more favorable tax jurisdictions and benefits associated with U.S. tax credits for research and development and the manufacturing deduction. The Company's effective tax rate for the six months ended June 30, 2017 was 3.2%, which differs from the U.S. federal statutory rate of 35% primarily due to a significant tax benefit of approximately 24.2% related to certain share-based payments related to the adoption of ASU 2016-09 as well as profitability in more favorable tax jurisdictions, reduced foreign entity losses in jurisdictions where we cannot take tax benefits and benefits associated with U.S. tax credits for research and development and the manufacturing deduction. The effective tax rate for the six months ended June 30, 2016 was 39.2%, inclusive of 5.1% associated with exit taxes related to our European reorganization. The 39.2% rate for the six month period of 2016 differs from the U.S. federal statutory rate of 35% primarily due to the exit taxes discussed above, partially offset by profitability in more favorable tax jurisdictions and benefits associated with U.S. tax credits for research and development and the manufacturing deduction. At June 30, 2017, the Company had a gross liability for unrecognized tax benefits of $14.8 million. The Company has recognized tax benefits associated with these liabilities of $6.6 million at June 30, 2017. The gross liability includes amounts associated with prior period foreign tax exposure. The Company recognizes interest related to unrecognized tax benefits in interest expense and penalties in operating expenses. The Company's liability for accrued interest related to uncertain tax positions was $1.6 million at June 30, 2017.

Income Taxes

The Company's effective tax rate for the second quarter of 2017 was a benefit of 7.7%, which differs from the U.S. federal statutory rate of 35% primarily due to a significant tax benefit of approximately 34.4% related to certain share-based payments related to the adoption of ASU 2016-09 as well as profitability in more favorable tax jurisdictions and benefits associated with U.S. tax credits for research and development and the manufacturing deduction. The Company's effective tax rate for the second quarter of 2016 of 33.8% differs from the U.S. federal statutory rate of 35% primarily due to profitability in more favorable tax jurisdictions and benefits associated with U.S. tax credits for research and development and the manufacturing deduction.

The Company's effective tax rate for the six months ended June 30, 2017 was 3.2%, which differs from the U.S. federal statutory rate of 35% primarily due to a significant tax benefit of approximately 24.2% related to certain share-based payments related to the adoption of ASU 2016-09 as well as profitability in more favorable tax jurisdictions, reduced foreign entity losses in jurisdictions where we cannot take tax benefits and benefits associated with U.S. tax credits for research and development and the manufacturing deduction. The effective tax rate for the six months ended June 30, 2016 was 39.2%, inclusive of 5.1% associated with exit taxes related to our European reorganization. The 39.2% rate for the six month period of 2016 differs from the U.S. federal statutory rate of 35% primarily due to the exit taxes discussed above, partially offset by profitability in more favorable tax jurisdictions and benefits associated with U.S. tax credits for research and development and the manufacturing deduction.

At June 30, 2017, the Company had a gross liability for unrecognized tax benefits of $14.8 million. The Company has recognized tax benefits associated with these liabilities of $6.6 million at June 30, 2017. The gross liability includes amounts associated with prior period foreign tax exposure.

The Company recognizes interest related to unrecognized tax benefits in interest expense and penalties in operating expenses. The Company's liability for accrued interest related to uncertain tax positions was $1.6 million at June 30, 2017.