Income Taxes	3 Months Ended
Mar. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company calculates its interim income tax provision in accordance with ASC 740. At the end of each interim period, the Company makes an estimate of the annual expected effective tax rate and applies that rate to its ordinary year to date earnings or loss. In addition, the effect of changes in enacted tax laws, rates or tax status is recognized in the interim period in which the change occurs. For the three months ended March 31, 2018 and 2017, the effective tax rate was approximately 19.2% and 34.7%, respectively, based on the annual effective tax rate net of discrete federal and state taxes. The Company’s effective tax rate for the three months ended March 31, 2018 benefited from the decrease in the U.S. statutory tax rate from 35.0% in the prior year to 21.0% in the current period as a result of the Tax Reform Act that was enacted on December 22, 2017. The computation of the effective tax rate includes modifications from the statutory rate such as depletion deduction and tax credits among other items. The difference in the effective tax rate relative to the statutory rate was primarily due to the change in the forecasted pretax income between quarters relative to the projected modifications to the tax rate during the three months ended March 31, 2018 and a benefit related to the domestic production activities deduction (“DPAD”) and share-based compensation during the three months ended March 31, 2017. The Company has evaluated its tax provisions taken as of March 31, 2018 and December 31, 2017 and believes all positions taken would be upheld under examination from income taxing authorities. Therefore, no liability for the effects of uncertain tax positions has been recorded in the accompanying consolidated balance sheets as of March 31, 2018 and December 31, 2017. The Company is open to examination by taxing authorities since incorporation.

Income Taxes

The Company calculates its interim income tax provision in accordance with ASC 740. At the end of each interim period, the Company makes an estimate of the annual expected effective tax rate and applies that rate to its ordinary year to date earnings or loss. In addition, the effect of changes in enacted tax laws, rates or tax status is recognized in the interim period in which the change occurs.

For the three months ended March 31, 2018 and 2017, the effective tax rate was approximately 19.2% and 34.7%, respectively, based on the annual effective tax rate net of discrete federal and state taxes. The Company’s effective tax rate for the three months ended March 31, 2018 benefited from the decrease in the U.S. statutory tax rate from 35.0% in the prior year to 21.0% in the current period as a result of the Tax Reform Act that was enacted on December 22, 2017. The computation of the effective tax rate includes modifications from the statutory rate such as depletion deduction and tax credits among other items. The difference in the effective tax rate relative to the statutory rate was primarily due to the change in the forecasted pretax income between quarters relative to the projected modifications to the tax rate during the three months ended March 31, 2018 and a benefit related to the domestic production activities deduction (“DPAD”) and share-based compensation during the three months ended March 31, 2017.

The Company has evaluated its tax provisions taken as of March 31, 2018 and December 31, 2017 and believes all positions taken would be upheld under examination from income taxing authorities. Therefore, no liability for the effects of uncertain tax positions has been recorded in the accompanying consolidated balance sheets as of March 31, 2018 and December 31, 2017. The Company is open to examination by taxing authorities since incorporation.