Income Taxes

The Company’s effective tax rate before remeasurement for the three months ended March 31, 2018 is based on the Company’s estimated full year effective tax rate, comprised of expected statutory tax benefit, offset by foreign rate differential and changes in valuation allowance. The Company’s income tax provision of $10.1 million and $2.2 million for the three months ended March 31, 2018 and 2017, respectively, included tax provisions of $0.5 million and $9.4 million, respectively, related to the remeasurement of foreign income tax accounts.

On December 22, 2017, the Tax Cuts and Jobs Act (the Act) was signed into law making significant changes to the Internal Revenue Code. Certain provisions of the Act applied to taxable years beginning after December 31, 2017 and therefore have an impact on the three months ended March 31, 2018. The Company has determined that a significant portion of the provisions will not have a material impact. The Company is continuing to gather additional information and anticipates completing the analysis for the following item by December 31, 2018:

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Global Intangible Low-Taxed Income (GILTI): The Act subjects a U.S. shareholder to current tax on GILTI of its controlled foreign corporations (CFCs) for taxable years beginning after December 31, 2017. GILTI is calculated as the excess of a U.S. shareholder’s pro-rata share of net income of CFCs over a calculated return on specific tangible assets of the CFCs. The GILTI will be offset by net operating losses in the U.S. and a corresponding valuation allowance release and will not impact the effective tax rate. The Company has elected to account for GILTI as a period charge in the period the tax arises.

The Company has not completed its assessment for the income tax effects of the Act related to the repeal of the corporate alternative minimum tax system, remeasurement of deferred tax assets and liabilities and elimination of executive compensation exemptions. However, as noted in Note 11. “Income Taxes” in the Company's Annual Report on Form 10-K for the year ended December 31, 2017, the Company was able to reasonably estimate certain effects for these items and therefore recorded provisional adjustments. The Company has not made any additional measurement-period adjustments related to these items during the three months ended March 31, 2018. The Company is continuing to gather additional information and anticipates completing the analysis for these items by December 22, 2018, within the one-year measurement period.