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Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Income Tax Disclosure [Abstract]      
Income (loss) from continuing operations before income taxes, equity in non-consolidated affiliates and noncontrolling interest $ 15,109us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments $ (137,850)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments $ (64,528)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
Statutory income tax rate 26.50%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 26.50%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 26.50%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Tax expense (benefit) using statutory income tax rate 4,004us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate (36,530)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate (17,100)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount 1,459us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes 1,060us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes 1,131us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes
Non-deductible stock-based compensation 1,982us-gaap_IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost 24,357us-gaap_IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost 7,699us-gaap_IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost
Other non-deductible expense 2,151us-gaap_IncomeTaxReconciliationNondeductibleExpenseOther 942us-gaap_IncomeTaxReconciliationNondeductibleExpenseOther 1,176us-gaap_IncomeTaxReconciliationNondeductibleExpenseOther
Change to valuation allowance on items affecting taxable income 2,003us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance 6,952us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance 15,682us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
Effect of the change in tax rate 0us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate 0us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate 2,168us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate
Effect of the difference in federal and statutory rates 2,222us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential (15)us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential (793)us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential
Noncontrolling interests (1,826)us-gaap_IncomeTaxReconciliationMinorityInterestIncomeExpense (1,712)us-gaap_IncomeTaxReconciliationMinorityInterestIncomeExpense (1,593)us-gaap_IncomeTaxReconciliationMinorityInterestIncomeExpense
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount 427us-gaap_IncomeTaxReconciliationOtherReconcilingItems 579us-gaap_IncomeTaxReconciliationOtherReconcilingItems 1,183us-gaap_IncomeTaxReconciliationOtherReconcilingItems
Income tax provision (benefit) $ 12,422us-gaap_IncomeTaxExpenseBenefit $ (4,367)us-gaap_IncomeTaxExpenseBenefit $ 9,553us-gaap_IncomeTaxExpenseBenefit
Effective income tax rate 82.20%us-gaap_EffectiveIncomeTaxRateContinuingOperations (3.20%)us-gaap_EffectiveIncomeTaxRateContinuingOperations 14.80%us-gaap_EffectiveIncomeTaxRateContinuingOperations