Income Taxes	6 Months Ended
Income Taxes	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	12. Income Taxes The quarterly income tax provision is measured using an estimated annual effective tax rate applied to the pre-tax income of certain entities within the Company's global consolidated group. The Company is required at the end of each interim reporting period to make its best estimate of the effective tax rate for the full fiscal year and to use that rate to provide for income taxes on a current year-to-date basis. However, if the Company is unable to make a reliable estimate of its annual effective tax rate, the actual effective tax rate for the year-to-date period may be the best estimate of the annual effective tax rate. For the six months ended June 30, 2017, the Company determined that it was able to reliably estimate its annual effective tax rate in all jurisdictions in which it operates. The Company recorded a consolidated income tax expense of $6 and $3,844 for the three and six months ended June 30, 2017, reflecting an effective tax rate of (8.18)% on consolidated profit before tax for the six months ended June 30, 2017. The income tax expense for the six months ended June 30, 2017 is driven by the mix of earnings from foreign operations, the composition of entities that are included or excluded from the calculation of annual effective tax rate, changes relating to valuation allowances associated with deferred tax assets for certain foreign entities, and discrete items, of which there were no material items in the six months ended June 30, 2017. The Company recorded an income tax benefit of $1,109 and income tax expense of $582 for the three and six months ended June 30, 2016. ASC 740, Income Taxes, provides criteria for the recognition, measurement, presentation and disclosures of uncertain tax positions. A tax benefit from an uncertain tax position may be recognized if it is “more likely than not” that the position is sustainable based solely on its technical merits. During the six months ended June 30, 2017, there were no material changes in the Company’s uncertain tax positions. The Company reviews all available evidence to evaluate the recovery of deferred tax assets, including the recent history of losses in all tax jurisdictions, as well as its ability to generate income in future periods. As of June 30, 2017, due to the uncertainty around the realizability of certain domestic and foreign deferred tax assets, the Company continues to maintain a valuation allowance.

ENERNOC INC 10-Q