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Income Taxes	3 Months Ended
	Mar. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	9. Income Taxes The effective tax rate for the three months ended March 31, 2019 and 2018 was 11.8% and (4.8)%, respectively. The Company established valuation allowances on deferred tax assets for losses and tax credits generated in 2018 and established valuation allowances on deferred tax assets for losses generated in 2019. The change in the effective tax rate from 2018 to 2019 was impacted by a change in jurisdictional mix of income between the two periods and 2019 had less adverse impact from the establishment of valuation allowances. For the three months ended March 31, 2018, the Company utilized the discrete-period method to compute its interim tax provision due to significant variations in the relationship between income tax expense and pre-tax accounting income or loss. For the three months ended March 31, 2019, the Company estimated and recorded tax based on a full year effective tax rate.

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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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