Income Taxes	9 Months Ended
Sep. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	5. Income Taxes Deferred tax assets and liabilities are recognized based on temporary differences between the financial reporting and tax basis of assets and liabilities using future enacted tax rates. A valuation allowance is recorded against deferred tax assets if it is more likely than not that some or all of the deferred tax assets will not be realized. The Company completed the Asset Sale and recorded the income tax implications of the sale in the second quarter of 2017. The Asset Sale generated taxable income for the Company which has resulted in income tax expense. The Company released a portion of its valuation allowance in the three months ended June 30, 2017 as it is now able to utilize its net operating loss carryforwards to offset the taxable income generated from the Asset Sale. The Company’s current income tax expense for the nine months ended September 30, 2017 is $8.0 million, which is comprised primarily of federal Alternative Minimum Tax and state income tax. As of September 30, 2017, the income tax payable was $1.8 million. Intraperiod tax allocation rules require the Company to allocate the provision for income taxes between continuing operations and other categories of earnings, such as discontinued operations. In periods in which there is pre-tax loss from continuing operations and pre-tax income in other categories of earnings, such as discontinued operations, the Company must allocate to continuing operations a tax benefit for the loss in continuing operations with an offsetting tax expense to discontinued operations. For the three and nine months ended September 30, 2017, the Company recognized an income tax benefit of $2.1 million and $32.4 million, respectively, in continuing operations and income tax benefit in discontinued operations of $5.0 million and income tax expense of $47.0 million, respectively, related to the income generated in connection with the Asset Sale. For the three and nine months ended September 30, 2016, the Company recognized an income tax benefit of $9.8 million in continuing operations and income tax expense in discontinued operations of $9.8 million. In connection with the Asset Sale, the Company recorded an income tax provision in discontinued operations of $224.3 million prior to the release of the valuation allowance. The Company released $177.4 million of its valuation allowance in discontinued operations, resulting in a total income tax expense of $47.0 million in discontinued operations for the nine months ended September 30, 2017.

5. Income Taxes

Deferred tax assets and liabilities are recognized based on temporary differences between the financial reporting and tax basis of assets and liabilities using future enacted tax rates. A valuation allowance is recorded against deferred tax assets if it is more likely than not that some or all of the deferred tax assets will not be realized.

The Company completed the Asset Sale and recorded the income tax implications of the sale in the second quarter of 2017. The Asset Sale generated taxable income for the Company which has resulted in income tax expense. The Company released a portion of its valuation allowance in the three months ended June 30, 2017 as it is now able to utilize its net operating loss carryforwards to offset the taxable income generated from the Asset Sale. The Company’s current income tax expense for the nine months ended September 30, 2017 is $8.0 million, which is comprised primarily of federal Alternative Minimum Tax and state income tax. As of September 30, 2017, the income tax payable was $1.8 million.

Intraperiod tax allocation rules require the Company to allocate the provision for income taxes between continuing operations and other categories of earnings, such as discontinued operations. In periods in which there is pre-tax loss from continuing operations and pre-tax income in other categories of earnings, such as discontinued operations, the Company must allocate to continuing operations a tax benefit for the loss in continuing operations with an offsetting tax expense to discontinued operations.

For the three and nine months ended September 30, 2017, the Company recognized an income tax benefit of $2.1 million and $32.4 million, respectively, in continuing operations and income tax benefit in discontinued operations of $5.0 million and income tax expense of $47.0 million, respectively, related to the income generated in connection with the Asset Sale. For the three and nine months ended September 30, 2016, the Company recognized an income tax benefit of $9.8 million in continuing operations and income tax expense in discontinued operations of $9.8 million.

In connection with the Asset Sale, the Company recorded an income tax provision in discontinued operations of $224.3 million prior to the release of the valuation allowance. The Company released $177.4 million of its valuation allowance in discontinued operations, resulting in a total income tax expense of $47.0 million in discontinued operations for the nine months ended September 30, 2017.