Income Taxes	3 Months Ended
Mar. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company accounts for income taxes in accordance with ASC Topic 740, Income Taxes. Income tax expense represented 22 percent and 26 percent of income from continuing operations before income taxes for the three months ended March 31, 2018 and 2017, respectively. The decrease in income tax expense for the three months ended March 31, 2018 was primarily due to the Tax Cuts and Jobs Act of 2017 (the "Tax Act"), which reduced the U.S. federal statutory corporate tax rate from 35% to 21% effective January 1, 2018. The income tax expense for the three months ended March 31, 2017 was lower than the 35% statutory corporate tax rate primarily due to excess tax benefits which reduced the income tax expense. As of March 31, 2018, the Company has not completed its determination of the accounting implications of the Tax Act on its tax accruals. However, the Company reasonably estimated the effects of the Tax Act and recorded provisional amounts in the financial statements. Pursuant to guidance issued by the Securities Exchange Commission ("SEC"), as codified in ASU 2018-05, Income Taxes (Topic 740)-Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 118, which provides for a measurement period of one year from the enactment date to finalize the accounting for effects of the Tax Act, the Company provisionally recorded in December 2017 and during the three months ended March 31, 2018 a cumulative net income tax benefit of $6.2 million related to the Tax Act. This amount is comprised of a $10.8 million tax benefit from the remeasurement of federal net deferred tax liabilities resulting from the reduction in the U.S. statutory corporate tax rate to 21% from 35%, less $4.6 million of tax expense from the mandatory one-time U.S. federal tax on certain previously untaxed accumulated earnings and profits ("E&P) of its foreign subsidiaries and related state income tax impacts. During the three months ended March 31, 2018, the Company recorded a measurement-period tax benefit of $0.5 million related to the effects of the statutory corporate tax rate reduction and a measurement-period tax expense of $0.8 million from the mandatory one-time U.S. federal tax on accumulated E&P of its foreign subsidiaries and related state income tax impacts. As the Company analyzes any additional guidance issued by the U.S. Treasury Department, the Internal Revenue Service ("IRS") and other standard-setting bodies, adjustments to the provisional amounts may be required. In addition, adjustments to the provisional amounts may be needed to reflect legislative actions by the various U.S. states related to application of the Tax Act provisions on 2017 state tax returns. These federal and state adjustments could significantly impact the Company’s provision for income taxes in the period in which the adjustments are made. As of December 31, 2017, the Company was not yet able to reasonably estimate the effects for the Global Intangible Low-Taxed Income ("GILTI") provisions of the Tax Act, therefore no provisional effects were recorded. Also, at that time, the Company had not made a policy decision regarding whether to record deferred taxes on GILTI or use the period cost method. During the three months ended March 31, 2018, the Company elected an accounting policy to record GILTI tax expense as a period cost, if and when incurred. Also, the Company was able to reasonably estimate the annual effects of GILTI and recorded in its annual effective tax rate a provisional estimate of the 2018 annual impact of GILTI of $1.9 million of tax expense. In accordance with SEC guidance noted above, this provisional amount may be refined as a result of additional guidance from, and interpretations by, the U.S. Treasury Department or the IRS. The Company has also included a provisional estimate of the annual impact of state taxation of foreign earnings of $0.1 million in the annual effective tax rate. This amount could change from further legislative actions by the various U.S. states. During the three months ended March 31, 2018, the Company completed an assessment of its existing accounting assertion with regard to the indefinite reinvestment of undistributed foreign earnings, considering the effects of the Tax Act and U.S. state and foreign tax legislation on future repatriations. After consideration of the effects of the mandatory one-time U.S. federal tax and GILTI provisions and its foreign investment strategy, the Company is no longer asserting indefinite reinvestment of its unrepatriated German E&P. On January 1, 2018, the Company implemented ASU 2016-16, Accounting for Income Taxes: Intra-Entity Asset Transfers of Assets Other Than Inventory. The standard requires the recognition of the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. For the Company, the tax effects related to a 2017 transfer of intellectual property are affected by this standard. The standard was applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of January 1, 2018. The Company recorded a $2.9 million deferred tax asset in the U.S. and eliminated a $3.6 million prepaid tax asset in Germany, each with offsets to retained earnings. In February 2018, the FASB issued ASU 2018-02, Reclassification of Certain Tax Effects From Accumulated Other Comprehensive Income (Topic 740), to address issues related to the application of ASC 740 to certain provisions of the Tax Act. This ASU provides an option for entities to make a one-time reclassification from AOCI to retained earnings for stranded tax effects resulting from the newly enacted tax rates for deferred tax assets and liabilities related to items within AOCI. The Company early adopted ASU 2018-02 as of December 31, 2017 and accordingly reclassified $10.9 million related to stranded tax effects resulting from the Tax Act from AOCI to retained earnings.

Income Taxes

The Company accounts for income taxes in accordance with ASC Topic 740, Income Taxes. Income tax expense represented 22 percent and 26 percent of income from continuing operations before income taxes for the three months ended March 31, 2018 and 2017, respectively. The decrease in income tax expense for the three months ended March 31, 2018 was primarily due to the Tax Cuts and Jobs Act of 2017 (the "Tax Act"), which reduced the U.S. federal statutory corporate tax rate from 35% to 21% effective January 1, 2018. The income tax expense for the three months ended March 31, 2017 was lower than the 35% statutory corporate tax rate primarily due to excess tax benefits which reduced the income tax expense.

As of March 31, 2018, the Company has not completed its determination of the accounting implications of the Tax Act on its tax accruals. However, the Company reasonably estimated the effects of the Tax Act and recorded provisional amounts in the financial statements. Pursuant to guidance issued by the Securities Exchange Commission ("SEC"), as codified in ASU 2018-05, Income Taxes (Topic 740)-Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 118, which provides for a measurement period of one year from the enactment date to finalize the accounting for effects of the Tax Act, the Company provisionally recorded in December 2017 and during the three months ended March 31, 2018 a cumulative net income tax benefit of $6.2 million related to the Tax Act. This amount is comprised of a $10.8 million tax benefit from the remeasurement of federal net deferred tax liabilities resulting from the reduction in the U.S. statutory corporate tax rate to 21% from 35%, less $4.6 million of tax expense from the mandatory one-time U.S. federal tax on certain previously untaxed accumulated earnings and profits ("E&P) of its foreign subsidiaries and related state income tax impacts. During the three months ended March 31, 2018, the Company recorded a measurement-period tax benefit of $0.5 million related to the effects of the statutory corporate tax rate reduction and a measurement-period tax expense of $0.8 million from the mandatory one-time U.S. federal tax on accumulated E&P of its foreign subsidiaries and related state income tax impacts. As the Company analyzes any additional guidance issued by the U.S. Treasury Department, the Internal Revenue Service ("IRS") and other standard-setting bodies, adjustments to the provisional amounts may be required. In addition, adjustments to the provisional amounts may be needed to reflect legislative actions by the various U.S. states related to application of the Tax Act provisions on 2017 state tax returns. These federal and state adjustments could significantly impact the Company’s provision for income taxes in the period in which the adjustments are made.

As of December 31, 2017, the Company was not yet able to reasonably estimate the effects for the Global Intangible Low-Taxed Income ("GILTI") provisions of the Tax Act, therefore no provisional effects were recorded. Also, at that time, the Company had not made a policy decision regarding whether to record deferred taxes on GILTI or use the period cost method. During the three months ended March 31, 2018, the Company elected an accounting policy to record GILTI tax expense as a period cost, if and when incurred. Also, the Company was able to reasonably estimate the annual effects of GILTI and recorded in its annual effective tax rate a provisional estimate of the 2018 annual impact of GILTI of $1.9 million of tax expense. In accordance with SEC guidance noted above, this provisional amount may be refined as a result of additional guidance from, and interpretations by, the U.S. Treasury Department or the IRS. The Company has also included a provisional estimate of the annual impact of state taxation of foreign earnings of $0.1 million in the annual effective tax rate. This amount could change from further legislative actions by the various U.S. states.

During the three months ended March 31, 2018, the Company completed an assessment of its existing accounting assertion with regard to the indefinite reinvestment of undistributed foreign earnings, considering the effects of the Tax Act and U.S. state and foreign tax legislation on future repatriations. After consideration of the effects of the mandatory one-time U.S. federal tax and GILTI provisions and its foreign investment strategy, the Company is no longer asserting indefinite reinvestment of its unrepatriated German E&P.

On January 1, 2018, the Company implemented ASU 2016-16, Accounting for Income Taxes: Intra-Entity Asset Transfers of Assets Other Than Inventory. The standard requires the recognition of the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. For the Company, the tax effects related to a 2017 transfer of intellectual property are affected by this standard. The standard was applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of January 1, 2018. The Company recorded a $2.9 million deferred tax asset in the U.S. and eliminated a $3.6 million prepaid tax asset in Germany, each with offsets to retained earnings.

In February 2018, the FASB issued ASU 2018-02, Reclassification of Certain Tax Effects From Accumulated Other Comprehensive Income (Topic 740), to address issues related to the application of ASC 740 to certain provisions of the Tax Act. This ASU provides an option for entities to make a one-time reclassification from AOCI to retained earnings for stranded tax effects resulting from the newly enacted tax rates for deferred tax assets and liabilities related to items within AOCI. The Company early adopted ASU 2018-02 as of December 31, 2017 and accordingly reclassified $10.9 million related to stranded tax effects resulting from the Tax Act from AOCI to retained earnings.