Income taxes	6 Months Ended
Jun. 30, 2015
Income Tax Disclosure [Abstract]
Income taxes	10. Income taxes The Company recognized a $2.7 million and $4.5 million provision for income tax on continuing operations which reflects an effective tax rate of (298.7)% and 77.3% on pre-tax income for the six months ended June 30, 2015 and 2014, respectively. Excluding the impact of various discrete charges, the effective tax rate on continuing operations was (256.6)% and 63.2% for the first six months of 2015 and 2014, respectively. The principal factors affecting the Company’s June 30, 2015 effective tax rate were the Company’s mix of earnings among various tax jurisdictions, state taxes, current period losses in certain jurisdictions for which the Company does not currently provide a tax benefit and variations in the customary relationship between income tax expense and pretax earnings. As of June 30, 2015 and December 31, 2014, the Company’s unrecognized tax benefit was $15.6 million. The Company had approximately $0.5 million accrued for payment of interest and penalties as of June 30, 2015 and December 31, 2014. It is reasonably possible that the amount of the unrecognized benefit with respect to certain of our unrecognized tax positions will significantly increase or decrease within the next 12 months. These changes may be the result of settlements of ongoing audits, competent authority proceedings or other events. At this time, an estimate of the range of the reasonably possible outcomes cannot be made.

Income taxes

6 Months Ended

Jun. 30, 2015

10. Income taxes

The Company recognized a $2.7 million and $4.5 million provision for income tax on continuing operations which reflects an effective tax rate of (298.7)% and 77.3% on pre-tax income for the six months ended June 30, 2015 and 2014, respectively. Excluding the impact of various discrete charges, the effective tax rate on continuing operations was (256.6)% and 63.2% for the first six months of 2015 and 2014, respectively. The principal factors affecting the Company’s June 30, 2015 effective tax rate were the Company’s mix of earnings among various tax jurisdictions, state taxes, current period losses in certain jurisdictions for which the Company does not currently provide a tax benefit and variations in the customary relationship between income tax expense and pretax earnings.

As of June 30, 2015 and December 31, 2014, the Company’s unrecognized tax benefit was $15.6 million. The Company had approximately $0.5 million accrued for payment of interest and penalties as of June 30, 2015 and December 31, 2014. It is reasonably possible that the amount of the unrecognized benefit with respect to certain of our unrecognized tax positions will significantly increase or decrease within the next 12 months. These changes may be the result of settlements of ongoing audits, competent authority proceedings or other events. At this time, an estimate of the range of the reasonably possible outcomes cannot be made.