Income Taxes	9 Months Ended
Sep. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The effective tax rate for the three and nine months ended September 30, 2017 was 27.6% and 101.1%, respectively, compared to the effective tax rate for the three and nine months ended September 30, 2016 of 39.0% and 37.9%, respectively. The effective tax rate for the three months ended September 30, 2017 differs from the US statutory tax rate of 35%, primarily due to certain intercompany transactions that did not have a tax effect. The effective tax rate for the nine months ended September 30, 2017 differs from the US statutory tax rate of 35% due to the release of the valuation allowance related to net deferred tax assets in the U.S. tax jurisdiction. There were a series of tax adjustments as a result of the April 2017 settlement with Dow that resulted in $40.0 million additional U.S. deferred tax liabilities. The reduction of the Company's obligations to Dow on the balance sheet impacted purchase price consideration, ultimately decreasing the Company’s intangible’s tax basis determined for ASC 740 purposes. The Company considered these future sources of taxable income as additional positive evidence when concluding the deferred tax assets within the U.S. were more likely than not to be realized and reversed a valuation allowance of $15.4 million.

Income Taxes

The effective tax rate for the three and nine months ended September 30, 2017 was 27.6% and 101.1%, respectively, compared to the effective tax rate for the three and nine months ended September 30, 2016 of 39.0% and 37.9%, respectively.

The effective tax rate for the three months ended September 30, 2017 differs from the US statutory tax rate of 35%, primarily due to certain intercompany transactions that did not have a tax effect.

The effective tax rate for the nine months ended September 30, 2017 differs from the US statutory tax rate of 35% due to the release of the valuation allowance related to net deferred tax assets in the U.S. tax jurisdiction. There were a series of tax adjustments as a result of the April 2017 settlement with Dow that resulted in $40.0 million additional U.S. deferred tax liabilities. The reduction of the Company's obligations to Dow on the balance sheet impacted purchase price consideration, ultimately decreasing the Company’s intangible’s tax basis determined for ASC 740 purposes. The Company considered these future sources of taxable income as additional positive evidence when concluding the deferred tax assets within the U.S. were more likely than not to be realized and reversed a valuation allowance of $15.4 million.