Income Taxes	3 Months Ended
Mar. 31, 2017
Income Tax Disclosure [Abstract]
Income Taxes	11. Income Taxes The Company's tax provision for interim periods is determined using an estimate of its annual effective tax rate, adjusted for discrete items. For the three months ended March 31, 2017, the Company recorded income tax benefit of $4.3 million on pre-tax loss of $192.9 million, for an effective tax rate of 2.2%. For the three months ended March 31, 2016, the Company recorded income tax expense of $10.0 million on pre-tax income of $26.5 million, for an effective tax rate of 37.6%. In the quarter ended March 31, 2017, the Company adopted ASU 2016-09 which resulted in $0.3 million of incremental tax expense recognized due to excess tax deficiencies of vested or settled awards in the period. The adoption of the standard was applied prospectively in accordance with guidance. The Company’s U.S. statutory rate is 35.0%. The most significant factor impacting the effective tax rate for the three months ended March 31, 2017 was the discrete impact of the goodwill impairment charges. There were no significant discrete items impacting the effective tax rate for the three months ended March 31, 2016.

Income Taxes

3 Months Ended

Mar. 31, 2017

11. Income Taxes

The Company's tax provision for interim periods is determined using an estimate of its annual effective tax rate, adjusted for discrete items.

For the three months ended March 31, 2017, the Company recorded income tax benefit of $4.3 million on pre-tax loss of $192.9 million, for an effective tax rate of 2.2%. For the three months ended March 31, 2016, the Company recorded income tax expense of $10.0 million on pre-tax income of $26.5 million, for an effective tax rate of 37.6%. In the quarter ended March 31, 2017, the Company adopted ASU 2016-09 which resulted in $0.3 million of incremental tax expense recognized due to excess tax deficiencies of vested or settled awards in the period. The adoption of the standard was applied prospectively in accordance with guidance.

The Company’s U.S. statutory rate is 35.0%. The most significant factor impacting the effective tax rate for the three months ended March 31, 2017 was the discrete impact of the goodwill impairment charges. There were no significant discrete items impacting the effective tax rate for the three months ended March 31, 2016.