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Income taxes | 3 Months Ended
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Mar. 31, 2019
Income taxes |
Income taxes | 14. Income taxes For the three months ended March 31, 2019 and 2018, we recorded income tax expense of approximately $1.8 million and $0.8 million, respectively. The change in tax expense for the three months ended March 31, 2019 was primarily driven by the difference in projected annual operating income or loss compared to our actual results as well as the recognition of certain discrete items in the current period. As of March 31, 2019, a full valuation allowance continues to be recorded against our U.S. and Swiss net deferred tax assets. This position is based on an analysis of positive and negative evidence, including analyzing three-year cumulative pre-tax income or loss, projections of future taxable income as well as other quantitative and qualitative information. The balance of our unrecognized tax benefits (including penalties and interest) increased by approximately $0.4 million during the three months ended March 31, 2019, of which only $0.1 million was recorded as an increase to noncurrent other liabilities on the condensed consolidated balance sheet. The increase is primarily driven by unrecognized tax benefits related to current year operations and research and development tax credits.

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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 + Details
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