Income Taxes	9 Months Ended
Sep. 30, 2015
Income Tax Disclosure [Abstract]
Income Taxes	10. Income Taxes During the three months ended September 30, 2015, the Company recognized an income tax expense of $6,554 on pre-tax income of $21,314, representing an effective income tax rate of 30.7% compared to an income tax expense of $4,751 on pre-tax income of $11,519, representing an effective tax rate of 41.2% during the three months ended September 30, 2014. The effective tax rates for all periods presented also differ from the federal U.S. statutory rate primarily due to a benefit from permanent deductions related to credits for domestic production activities and the impact of state income taxes. During the nine months ended September 30, 2015, the Company recognized an income tax expense of $16,528 on pre-tax income of $49,404, representing an effective income tax rate of 33.5% compared to an income tax expense of $7,084 on pre-tax income of $17,419, representing an effective tax rate of 40.7% during the nine months ended September 30, 2014.

Income Taxes

9 Months Ended

Sep. 30, 2015

10. Income Taxes

During the three months ended September 30, 2015, the Company recognized an income tax expense of $6,554 on pre-tax income of $21,314, representing an effective income tax rate of 30.7% compared to an income tax expense of $4,751 on pre-tax income of $11,519, representing an effective tax rate of 41.2% during the three months ended September 30, 2014.

The effective tax rates for all periods presented also differ from the federal U.S. statutory rate primarily due to a benefit from permanent deductions related to credits for domestic production activities and the impact of state income taxes.

During the nine months ended September 30, 2015, the Company recognized an income tax expense of $16,528 on pre-tax income of $49,404, representing an effective income tax rate of 33.5% compared to an income tax expense of $7,084 on pre-tax income of $17,419, representing an effective tax rate of 40.7% during the nine months ended September 30, 2014.