Income Taxes	6 Months Ended
Jun. 30, 2016
Income Tax Disclosure [Abstract]
Income Taxes	18. INCOME TAXES Our continuing operations effective income tax rates for the three and six months ended June 30, 2016 were 51.0 percent and 47.1 percent, respectively compared to 7.7 percent and 19.4 percent, respectively, for the three and six months ended June 30, 2015. The continuing operations effective income tax rates were determined using the estimated annual effective income tax rates after considering discrete income tax items for each respective period. The continuing operations effective income tax rates for the three and six months ended June 30, 2016 were higher than the United States statutory federal income tax rates primarily due to various favorable permanent differences including deductions for depletion. The continuing operations effective income tax rates for the three and six months ended June 30, 2015 were lower than the United States statutory federal income tax rates primarily due to various favorable permanent differences including deductions for depletion and manufacturing activities.

Income Taxes

6 Months Ended

Jun. 30, 2016

18. INCOME TAXES

Our continuing operations effective income tax rates for the three and six months ended June 30, 2016 were 51.0 percent and 47.1 percent, respectively compared to 7.7 percent and 19.4 percent, respectively, for the three and six months ended June 30, 2015. The continuing operations effective income tax rates were determined using the estimated annual effective income tax rates after considering discrete income tax items for each respective period. The continuing operations effective income tax rates for the three and six months ended June 30, 2016 were higher than the United States statutory federal income tax rates primarily due to various favorable permanent differences including deductions for depletion. The continuing operations effective income tax rates for the three and six months ended June 30, 2015 were lower than the United States statutory federal income tax rates primarily due to various favorable permanent differences including deductions for depletion and manufacturing activities.