Income Taxes	9 Months Ended
Sep. 30, 2014
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Income tax expense (benefit) was $(365,000) and $144,955,000 for the three months ended September 30, 2014 and 2013, respectively, and $(43,381,000) and $117,820,000 for the nine months ended September 30, 2014 and 2013, respectively. The difference in recorded income tax expense/benefit versus income tax expense/benefit computed at the statutory federal income tax rate is primarily attributable to state income taxes, changes in state net operating losses, additional general business credits, changes to valuation allowances associated with certain deferred tax assets, and various permanent differences between pre-tax GAAP income and taxable income. At December 31, 2013, the Company had federal net operating loss carryforwards for tax purposes of $150,758,000 expiring in the years ending December 31, 2028 through 2033, a charitable contribution deduction carryforward of $18,125,000 expiring in the years ending December 31, 2014 through 2017, general business credit carryovers of $21,680,000 expiring in the years ending December 31, 2018 through 2033, and an alternative minimum tax (“AMT”) credit carryforward of $28,570,000 available until used to reduce federal tax to the AMT amount. The Company considers a variety of tax-deferral strategies, including tax deferred exchanges, when evaluating its future tax position. The Company has a full valuation allowance against the deferred tax asset associated with its charitable contributions. The Company has a valuation allowance against its general business credits, other than those general business credits which are eligible to be utilized to reduce future AMT liabilities. The Company has a valuation allowance against certain of its state net operating losses and state bonus depreciation deferred assets. These valuation allowances exist because management believes it is more likely than not that the Company will not realize these benefits. The Company applies the “with-and-without” methodology for recognizing excess tax benefits from the deduction of stock-based compensation. The net operating loss available for the tax return, as is noted in the paragraph above, is greater than the net operating loss available for the tax provision due to excess deductions from stock-based compensation reported on the return, as well as the impact of adjustments to the net operating loss under accounting guidance on accounting for uncertainty in income taxes. As of December 31, 2013, the Company has not recorded a net deferred tax asset of approximately $18,064,000 from excess stock-based compensation deductions taken on the tax return for which a benefit has not yet been recognized in the Company’s tax provision.

Income Taxes

Income tax expense (benefit) was $(365,000) and $144,955,000 for the three months ended September 30, 2014 and 2013, respectively, and $(43,381,000) and $117,820,000 for the nine months ended September 30, 2014 and 2013, respectively. The difference in recorded income tax expense/benefit versus income tax expense/benefit computed at the statutory federal income tax rate is primarily attributable to state income taxes, changes in state net operating losses, additional general business credits, changes to valuation allowances associated with certain deferred tax assets, and various permanent differences between pre-tax GAAP income and taxable income.

At December 31, 2013, the Company had federal net operating loss carryforwards for tax purposes of $150,758,000 expiring in the years ending December 31, 2028 through 2033, a charitable contribution deduction carryforward of $18,125,000 expiring in the years ending December 31, 2014 through 2017, general business credit carryovers of $21,680,000 expiring in the years ending December 31, 2018 through 2033, and an alternative minimum tax (“AMT”) credit carryforward of $28,570,000 available until used to reduce federal tax to the AMT amount.

The Company considers a variety of tax-deferral strategies, including tax deferred exchanges, when evaluating its future tax position. The Company has a full valuation allowance against the deferred tax asset associated with its charitable contributions. The Company has a valuation allowance against its general business credits, other than those general business credits which are eligible to be utilized to reduce future AMT liabilities. The Company has a valuation allowance against certain of its state net operating losses and state bonus depreciation deferred assets. These valuation allowances exist because management believes it is more likely than not that the Company will not realize these benefits.

The Company applies the “with-and-without” methodology for recognizing excess tax benefits from the deduction of stock-based compensation. The net operating loss available for the tax return, as is noted in the paragraph above, is greater than the net operating loss available for the tax provision due to excess deductions from stock-based compensation reported on the return, as well as the impact of adjustments to the net operating loss under accounting guidance on accounting for uncertainty in income taxes. As of December 31, 2013, the Company has not recorded a net deferred tax asset of approximately $18,064,000 from excess stock-based compensation deductions taken on the tax return for which a benefit has not yet been recognized in the Company’s tax provision.