Income Taxes	6 Months Ended
Jun. 30, 2016
Income Tax Disclosure [Abstract]
Income Taxes	5. Income Taxes The effective income tax rate for the three and six months ended June 30, 2016, was 35.1% and 34.9%, respectively. Total income tax expense for the three and six months ended June 30, 2016, differed from the amount computed by applying the U.S. federal statutory tax rate to pre-tax income due primarily to a tax shortfall related to share-based compensation of $0.1 million and $0.2 million, respectively. The effective income tax rate for the three and six months ended June 30, 2015, was 38.3% and 36.8%, respectively. Total income tax expense for the three and six months ended June 30, 2015, differed from amounts computed by applying the U.S. federal statutory tax rates to pre-tax income due primarily to the impact of a reduction in the state tax rate of $0.8 million, partially offset by a tax shortfall related to share-based compensation of $0.2 million and $0.4 million, respectively.

Income Taxes

6 Months Ended

Jun. 30, 2016

5. Income Taxes

The effective income tax rate for the three and six months ended June 30, 2016, was 35.1% and 34.9%, respectively. Total income tax expense for the three and six months ended June 30, 2016, differed from the amount computed by applying the U.S. federal statutory tax rate to pre-tax income due primarily to a tax shortfall related to share-based compensation of $0.1 million and $0.2 million, respectively.

The effective income tax rate for the three and six months ended June 30, 2015, was 38.3% and 36.8%, respectively. Total income tax expense for the three and six months ended June 30, 2015, differed from amounts computed by applying the U.S. federal statutory tax rates to pre-tax income due primarily to the impact of a reduction in the state tax rate of $0.8 million, partially offset by a tax shortfall related to share-based compensation of $0.2 million and $0.4 million, respectively.