Income Taxes	6 Months Ended
Jun. 30, 2015
Income Tax Disclosure [Abstract]
Income taxes	Income Taxes In determining quarterly provisions for income taxes, the Company uses the annual estimated effective tax rate applied to the actual year-to-date loss. The Company’s annual estimated effective tax rate differs from the statutory rate primarily as a result of state taxes, tax amortization of goodwill and changes in the Company’s valuation allowance. The Company recorded $0.1 million income tax expense for the three months ended June 30, 2015 and 2014. The Company recorded $0.3 million income tax expense for the six months ended June 30, 2015 and 2014. There were no material changes to the Company’s unrecognized tax benefits in the three and six months ended June 30, 2015, and the Company does not expect to have any significant changes to unrecognized tax benefits through the end of the fiscal year. Due to the presence of net operating loss carryforwards, all income tax years remain open for examination by the Internal Revenue Service (“IRS") and various state taxing authorities. During the second quarter of 2015, the Company settled an IRS tax examination for the 2011 and 2012 tax years. Given the Company’s net operating losses, the IRS tax examination adjustments did not result in a tax assessment. The Company believes its income tax accruals at June 30, 2015 are reasonable.

Income Taxes

6 Months Ended

Jun. 30, 2015

Income Taxes

In determining quarterly provisions for income taxes, the Company uses the annual estimated effective tax rate applied to the actual year-to-date loss. The Company’s annual estimated effective tax rate differs from the statutory rate primarily as a result of state taxes, tax amortization of goodwill and changes in the Company’s valuation allowance. The Company recorded $0.1 million income tax expense for the three months ended June 30, 2015 and 2014. The Company recorded $0.3 million income tax expense for the six months ended June 30, 2015 and 2014.

There were no material changes to the Company’s unrecognized tax benefits in the three and six months ended June 30, 2015, and the Company does not expect to have any significant changes to unrecognized tax benefits through the end of the fiscal year. Due to the presence of net operating loss carryforwards, all income tax years remain open for examination by the Internal Revenue Service (“IRS") and various state taxing authorities. During the second quarter of 2015, the Company settled an IRS tax examination for the 2011 and 2012 tax years. Given the Company’s net operating losses, the IRS tax examination adjustments did not result in a tax assessment. The Company believes its income tax accruals at June 30, 2015 are reasonable.