Income Taxes	6 Months Ended
Jun. 30, 2018
Income Taxes
Income Taxes	8. Income Taxes There was no income tax expense for the three and six months ended June 30, 2018. Should we continue to generate taxable income in 2018, we expect that the taxable income will be substantially offset by the utilization of net operating losses or other deferred tax assets, and potential release of valuation allowance. The difference between the consolidated effective income tax rate and the U.S. federal statutory rate is primarily attributable to a change in valuation allowance against net deferred tax assets.

Income Taxes

6 Months Ended

Jun. 30, 2018

8. Income Taxes

There was no income tax expense for the three and six months ended June 30, 2018. Should we continue to generate taxable income in 2018, we expect that the taxable income will be substantially offset by the utilization of net operating losses or other deferred tax assets, and potential release of valuation allowance. The difference between the consolidated effective income tax rate and the U.S. federal statutory rate is primarily attributable to a change in valuation allowance against net deferred tax assets.