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Income Taxes - Components of Deferred Tax Assets (Details) (USD $)
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12 Months Ended | |
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Dec. 31, 2014
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Dec. 31, 2013
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| Components of Deferred Tax Assets and Liabilities [Abstract] | ||
| Federal Net Operating Loss Carryforwards | $ 637,919,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsDomestic | $ 608,631,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsDomestic |
| State Net Operating Loss Carryforwards | 136,917,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal | 111,624,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal |
| Book deferred gain | 77,182,000us-gaap_DeferredTaxAssetsDeferredIncome | 77,182,000us-gaap_DeferredTaxAssetsDeferredIncome |
| Share-based compensation expense | 28,432,000us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost | 24,089,000us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost |
| Property, plant and equipment | 29,483,000us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment | 27,260,000us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment |
| Other | 15,464,000us-gaap_DeferredTaxAssetsOther | 3,931,000us-gaap_DeferredTaxAssetsOther |
| Total deferred tax assets | 925,397,000us-gaap_DeferredTaxAssetsGross | 852,717,000us-gaap_DeferredTaxAssetsGross |
| Investment in limited partnership | (46,601,000)us-gaap_DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates | (109,884,000)us-gaap_DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates |
| Other | 0us-gaap_DeferredTaxLiabilitiesOther | (142,000)us-gaap_DeferredTaxLiabilitiesOther |
| Total deferred tax liabilities | (46,601,000)us-gaap_DeferredIncomeTaxLiabilities | (110,026,000)us-gaap_DeferredIncomeTaxLiabilities |
| Net deferred tax assets | 878,796,000us-gaap_DeferredTaxAssetsLiabilitiesNet | 742,691,000us-gaap_DeferredTaxAssetsLiabilitiesNet |
| Less: net deferred tax asset valuation allowance | (878,796,000)us-gaap_DeferredTaxAssetsValuationAllowance | (742,691,000)us-gaap_DeferredTaxAssetsValuationAllowance |
| Total net deferred tax asset | 0us-gaap_DeferredTaxAssetsNet | 0us-gaap_DeferredTaxAssetsNet |
| Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration | 3,500,000,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration | |
| Valuation Allowance, Deferred Tax Asset, Increase | $ 136,100,000us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount |
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- Details
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- Definition
Amount of deferred tax liability attributable to taxable temporary differences. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from deferred income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible state and local operating loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards that are subject to expiration dates. No definition available.
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences not separately disclosed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from property, plant, and equipment. No definition available.
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of deferred tax liability attributable to taxable temporary differences from investments in unconsolidated subsidiaries and investments in other affiliates which are not controlled nor consolidated. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of deferred tax liability attributable to taxable temporary differences not separately disclosed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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