Income Taxes	6 Months Ended
Jun. 30, 2014
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. For the three months ended June 30, 2014 and 2013, the Company recorded $0.1 million and $0.1 million in income tax expense, respectively. For the six months ended June 30, 2014 and 2013, the Company recorded $0.3 million and $0.3 million in income tax expense, respectively. There were no material changes to the Company’s unrecognized tax benefits in the three and six months ended June 30, 2014, and the Company does not expect to have any significant changes to unrecognized tax benefits through the end of the fiscal year. The Company is currently under audit examination by the Internal Revenue Service for the 2011 and 2012 tax years, and under a state audit for the 2010 through the 2012 tax years.

Income Taxes

6 Months Ended

Jun. 30, 2014

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. For the three months ended June 30, 2014 and 2013, the Company recorded $0.1 million and $0.1 million in income tax expense, respectively. For the six months ended June 30, 2014 and 2013, the Company recorded $0.3 million and $0.3 million in income tax expense, respectively.

There were no material changes to the Company’s unrecognized tax benefits in the three and six months ended June 30, 2014, and the Company does not expect to have any significant changes to unrecognized tax benefits through the end of the fiscal year. The Company is currently under audit examination by the Internal Revenue Service for the 2011 and 2012 tax years, and under a state audit for the 2010 through the 2012 tax years.