Income Taxes	6 Months Ended
Jun. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The provision for income taxes as a percentage of earnings before income taxes for the second quarter of 2018 was 22.2% compared to 35.5% in the second quarter of 2017. The provision for income taxes as a percentage of earnings before income taxes for the first half of 2018 was 22.2% compared to 34.9% for the first half of 2017. Interim provisions are tied to an estimate of the overall annual rate which can vary due to state taxes and the relationship of foreign and domestic earnings. These items cause variations between periods. The decrease between years was due almost entirely to the lower Federal tax rate, which declined from 35% in 2017 to 21% in 2018 as a result of U.S. tax reform that was enacted in December 2017. For the six-months ended June 30, 2018 and 2017, the Company recognized discrete tax benefits related to a pension plan payment (2018 only) and the excess tax benefits from stock-based compensation of $0.5 million and $0.2 million, respectively. In December 2017, the Tax Cuts and Jobs Act of 2017 (the “Act”) was signed into law making significant changes to the Internal Revenue Code. Changes include, but are not limited to, a corporate tax rate decrease from 35% to 21% effective for tax years beginning after December 31, 2017, the transition of U.S. international taxation from a worldwide tax system to a territorial system, and a one-time transition tax on the mandatory deemed repatriation of cumulative foreign earnings as of December 31, 2017. On December 22, 2017, Staff Accounting Bulletin No. 118 (“SAB 118”) was issued to address the application of U.S. GAAP in situations when a registrant does not have the necessary information available, prepared, or analyzed (including computations) in reasonable detail to complete the accounting for certain income tax effects of the Act. For the three- and six-month periods months ended June 30, 2018, the Company did not update the provisional amount of transition tax recorded as of December 31, 2017, as there was no new information that would materially impact the Company’s consolidated financial statements. The Company will continue to monitor any new guidance and update its transition tax calculation in a later quarter if necessary. Additional work is still needed for a more detailed analysis of the Company's deferred tax assets and liabilities and its historical foreign earnings, as well as potential correlative adjustments. Any subsequent adjustment to these amounts will be recorded to current tax expense in the quarter that the analysis is completed. The Company is subject to numerous other provisions of the Act that are effective for tax years starting after December 31, 2017. These provisions include the Global Intangible Low-Taxed Income inclusion, the deduction for Foreign-Derived Intangible Income, the business interest expense deduction limitation under Section 163(j), the executive compensation provision under Section 162(m), and the reduced deduction for certain meals and entertainment related expenses. The Company will continue to refine its computation related to these provisions as additional guidance becomes available. The net impact of these provisions is not expected to have a material impact on the Company’s consolidated financial statements.

Income Taxes

The provision for income taxes as a percentage of earnings before income taxes for the second quarter of 2018 was 22.2% compared to 35.5% in the second quarter of 2017. The provision for income taxes as a percentage of earnings before income taxes for the first half of 2018 was 22.2% compared to 34.9% for the first half of 2017. Interim provisions are tied to an estimate of the overall annual rate which can vary due to state taxes and the relationship of foreign and domestic earnings. These items cause variations between periods. The decrease between years was due almost entirely to the lower Federal tax rate, which declined from 35% in 2017 to 21% in 2018 as a result of U.S. tax reform that was enacted in December 2017. For the six-months ended June 30, 2018 and 2017, the Company recognized discrete tax benefits related to a pension plan payment (2018 only) and the excess tax benefits from stock-based compensation of $0.5 million and $0.2 million, respectively.

In December 2017, the Tax Cuts and Jobs Act of 2017 (the “Act”) was signed into law making significant changes to the Internal Revenue Code. Changes include, but are not limited to, a corporate tax rate decrease from 35% to 21% effective for tax years beginning after December 31, 2017, the transition of U.S. international taxation from a worldwide tax system to a territorial system, and a one-time transition tax on the mandatory deemed repatriation of cumulative foreign earnings as of December 31, 2017.

On December 22, 2017, Staff Accounting Bulletin No. 118 (“SAB 118”) was issued to address the application of U.S. GAAP in situations when a registrant does not have the necessary information available, prepared, or analyzed (including computations) in reasonable detail to complete the accounting for certain income tax effects of the Act. For the three- and six-month periods months ended June 30, 2018, the Company did not update the provisional amount of transition tax recorded as of December 31, 2017, as there was no new information that would materially impact the Company’s consolidated financial statements. The Company will continue to monitor any new guidance and update its transition tax calculation in a later quarter if necessary. Additional work is still needed for a more detailed analysis of the Company's deferred tax assets and liabilities and its historical foreign earnings, as well as potential correlative adjustments. Any subsequent adjustment to these amounts will be recorded to current tax expense in the quarter that the analysis is completed.

The Company is subject to numerous other provisions of the Act that are effective for tax years starting after December 31, 2017. These provisions include the Global Intangible Low-Taxed Income inclusion, the deduction for Foreign-Derived Intangible Income, the business interest expense deduction limitation under Section 163(j), the executive compensation provision under Section 162(m), and the reduced deduction for certain meals and entertainment related expenses. The Company will continue to refine its computation related to these provisions as additional guidance becomes available. The net impact of these provisions is not expected to have a material impact on the Company’s consolidated financial statements.