Income Taxes	6 Months Ended
Jun. 30, 2015
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes — At June 30, 2015 and 2014, and December 31, 2014, we determined that we did not need a valuation allowance on our gross deferred tax assets. Although realization of the deferred tax assets is not assured, management believes that it is more likely than not that the deferred tax assets will be realized based on our expectation that we will be able to fully utilize the deductions that are ultimately recognized for tax purposes. For the three and six months ended June 30, 2015, the effective tax rate was 29.9% and 31.4%, respectively, compared to 32.9% and33.1% for the same periods last year. The year-over-year decrease in the effective rate for both the three and six month periods is primarily due to the reversal of approximately $14 million of deferred taxes associated with the appreciation of our previous 5% investment in ARX Holding Corp. as a result of our acquisition of a controlling interest in ARX. For the six months ended June 30, 2015, there have been no material changes in our uncertain tax positions.

Income Taxes

6 Months Ended

Jun. 30, 2015

Income Taxes — At June 30, 2015 and 2014, and December 31, 2014, we determined that we did not need a valuation allowance on our gross deferred tax assets. Although realization of the deferred tax assets is not assured, management believes that it is more likely than not that the deferred tax assets will be realized based on our expectation that we will be able to fully utilize the deductions that are ultimately recognized for tax purposes.

For the three and six months ended June 30, 2015, the effective tax rate was 29.9% and 31.4%, respectively, compared to 32.9% and33.1% for the same periods last year. The year-over-year decrease in the effective rate for both the three and six month periods is primarily due to the reversal of approximately $14 million of deferred taxes associated with the appreciation of our previous 5% investment in ARX Holding Corp. as a result of our acquisition of a controlling interest in ARX.

For the six months ended June 30, 2015, there have been no material changes in our uncertain tax positions.