Income Taxes	9 Months Ended
Sep. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Our effective tax rate was 1.3% and 1.0% for the three and nine months ended September 30, 2018, respectively, and (0.5)% and (0.6)% for the three and nine months ended September 30, 2017, respectively. Taxes in the current year period relate to Louisiana state income tax and Texas margin tax. Taxes in the prior year period relate to Texas margin tax. For federal income tax purposes, we have applied a valuation allowance against any potential deferred tax asset which would have ordinarily resulted.

Income Taxes

9 Months Ended

Sep. 30, 2018

Our effective tax rate was 1.3% and 1.0% for the three and nine months ended September 30, 2018, respectively, and (0.5)% and (0.6)% for the three and nine months ended September 30, 2017, respectively. Taxes in the current year period relate to Louisiana state income tax and Texas margin tax. Taxes in the prior year period relate to Texas margin tax. For federal income tax purposes, we have applied a valuation allowance against any potential deferred tax asset which would have ordinarily resulted.