Income Taxes	3 Months Ended
Mar. 31, 2015
Income Taxes
Income Taxes	10.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 $0.2 million and $0.3 million income tax expense for the three months ended March 31, 2015 and 2014, respectively. There were no material changes to the Company’s unrecognized tax benefits in the three months ended March 31, 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. The Company is currently under IRS examination for the 2011 and 2012 tax years. The Company does not anticipate that this pending tax examination will result in material tax assessments and it believes its income tax accruals at March 31, 2015 are reasonable.

Income Taxes

3 Months Ended

Mar. 31, 2015

10.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 $0.2 million and $0.3 million income tax expense for the three months ended March 31, 2015 and 2014, respectively.

There were no material changes to the Company’s unrecognized tax benefits in the three months ended March 31, 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. The Company is currently under IRS examination for the 2011 and 2012 tax years. The Company does not anticipate that this pending tax examination will result in material tax assessments and it believes its income tax accruals at March 31, 2015 are reasonable.