Note 8. Income Taxes

The Company’s provision for income taxes consists of federal, state, local, and foreign taxes in amounts necessary to align the Company’s year-to-date provision for income taxes with the effective tax rate that the Company expects to achieve for the full year. Each quarter, the Company updates its estimate of the annual effective tax rate and records cumulative adjustments as deemed necessary. The income tax provisions for the quarter ended March 31, 2017 reflect an estimated global annual effective tax rate of approximately -7.27%. As of March 31, 2017, deferred tax assets generated from the Company’s U.S. activities were offset by a valuation allowance because realization depends on generating future taxable income, which, in the Company’s estimation, is not more likely than not to be generated before such net operating loss carryforwards expire. The Company expects its effective tax rate for its current fiscal year to be significantly lower than the statutory rate as a result of a full valuation allowance; therefore, any loss before income taxes does not generate a corresponding income tax benefit.

Income tax expense for the quarter ended March 31, 2017 of $227 was attributable primarily to tax deductions related to goodwill, for which there is no corresponding financial statement amortization expense, partially offset by the reduction in the valuation allowance needed following the acquisition of Excalibur's deferred tax liability. The final annual tax rate cannot be determined until the end of the fiscal year; therefore, the actual tax rate could differ from current estimates. Although the Company has an immaterial amount of uncertain tax positions, the Company does not expect to record any additional material provisions for unrecognized tax benefits with the next year.