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Income Taxes	6 Months Ended
	Jun. 30, 2019
Income Tax Disclosure [Abstract]
Income Taxes	11. Income Taxes The provision for income taxes for the three months ended June 30, 2019 and 2018 reflects effective tax rates of 19.4% and 15.0%, respectively. The increase in the effective rate for the three months ended June 30, 2019 was primarily attributable to an income tax uncertainty reserve recorded during the three months ended June 30, 2019 related to the deductibility of equity-based compensation. The provision for income taxes for the six months ended June 30, 2019 and 2018 reflects effective tax rates of 19.6% and 6.5%, respectively. The increase in the effective tax rate for the six months ended June 30, 2019 was primarily attributable to an income tax uncertainty recorded during the six months ended June 30, 2019 related to the deductibility of equity-based compensation. The Company recorded a discrete benefit of $10.5 million during the six months ended June 30, 2018 related to a change in the provisional amount recorded at December 31, 2017 in connection with the Tax Cuts and Jobs Act (the “Tax Act”).

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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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