Income Taxes	3 Months Ended
Mar. 31, 2018
Income Taxes
Income Taxes	7.Income Taxes The Company’s income tax provisions for all periods consist of federal, state and foreign income taxes. The tax provisions for the three months ended March 31, 2018 and 2017 were based on estimated full-year effective tax rates, including the mix of income for the period between higher-taxed and lower-taxed jurisdictions, after giving effect to significant items related specifically to the interim periods, and loss-making entities for which it is not more likely than not that a tax benefit will be realized. The Company’s effective tax rate was approximately 8% and 0% for the three months ended March 31, 2018 and 2017, respectively. The Company’s tax benefit of $1.2 million for the three months ended March 31, 2018 primarily relates to the amortization of acquired intangible assets and losses generated in the Short Course Segment. The Company expects to continue to recognize a tax benefit in the future for the Short Course Segment to the extent that (i) the segment continues to generate pre-tax losses and (ii) the Short Course Segment’s deferred tax liabilities are in excess of deferred tax assets. To date, the Company has not been required to pay U.S. federal income taxes because of its current and accumulated net operating losses. On December 22, 2017, Staff Accounting Bulletin No. 118 (“SAB 118”) was issued to address the application of U.S. GAAP in situations when a registrant does not have the necessary information available, prepared, or analyzed (including computations) in reasonable detail to complete the accounting for certain income tax effects of the Tax Cuts and Jobs Act of 2017 (“Tax Act”). As of March 31, 2018, the Company is still evaluating certain components of the Tax Act; however, it has finalized its determination that no transitional tax is required. As the Company collects and compares necessary data and interprets the Tax Act and any additional guidance issued by the U.S. Treasury Department, the Internal Revenue Service, and other standard-setting bodies, the Company may make adjustments to the provisional amounts recorded.

7.Income Taxes

The Company’s income tax provisions for all periods consist of federal, state and foreign income taxes. The tax provisions for the three months ended March 31, 2018 and 2017 were based on estimated full-year effective tax rates, including the mix of income for the period between higher-taxed and lower-taxed jurisdictions, after giving effect to significant items related specifically to the interim periods, and loss-making entities for which it is not more likely than not that a tax benefit will be realized.

The Company’s effective tax rate was approximately 8% and 0% for the three months ended March 31, 2018 and 2017, respectively. The Company’s tax benefit of $1.2 million for the three months ended March 31, 2018 primarily relates to the amortization of acquired intangible assets and losses generated in the Short Course Segment. The Company expects to continue to recognize a tax benefit in the future for the Short Course Segment to the extent that (i) the segment continues to generate pre-tax losses and (ii) the Short Course Segment’s deferred tax liabilities are in excess of deferred tax assets. To date, the Company has not been required to pay U.S. federal income taxes because of its current and accumulated net operating losses.

On December 22, 2017, Staff Accounting Bulletin No. 118 (“SAB 118”) was issued to address the application of U.S. GAAP in situations when a registrant does not have the necessary information available, prepared, or analyzed (including computations) in reasonable detail to complete the accounting for certain income tax effects of the Tax Cuts and Jobs Act of 2017 (“Tax Act”). As of March 31, 2018, the Company is still evaluating certain components of the Tax Act; however, it has finalized its determination that no transitional tax is required. As the Company collects and compares necessary data and interprets the Tax Act and any additional guidance issued by the U.S. Treasury Department, the Internal Revenue Service, and other standard-setting bodies, the Company may make adjustments to the provisional amounts recorded.