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Income Taxes	6 Months Ended
	Jun. 30, 2019
Income Tax Disclosure [Abstract]
Income Taxes	13. Income Taxes The effective income tax rates for the six months ended June 30, 2019 and 2018 were 24.0% and 27.4%, respectively. The effective income tax rates in 2019 and 2018 were favorably impacted by a benefit associated with the U.S. research and development credit and unfavorably impacted by state and local taxes and unfavorable tax rates in foreign jurisdictions.  Additionally, the 2018 effective income tax rate was unfavorably impacted by an adjustment to the deemed repatriation tax liability recorded in 2017 under the Tax Cuts and Jobs Act of 2017 and increases to uncertain tax positions. The effective income tax rates for the three months ended June 30, 2019 and 2018 were 23.2% and 25.7%, respectively.  The effective income tax rates in 2019 and 2018 were favorably impacted by a benefit associated with the U.S. research and development credit and unfavorably impacted by state and local taxes and unfavorable tax rates in foreign jurisdictions.  Additionally, the 2019 effective income tax rate was favorably impacted by decreases to uncertain tax positions, as a result of audit settlements. It is reasonably possible that, within the next 12 months, total unrecognized tax benefits may decrease in the range of $2.5 to $3.1 million, primarily as a result of the conclusion of pending U.S. federal, state and foreign income tax proceedings.

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- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-URI http://asc.fasb.org/topic&trid=2144680

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