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Income Taxes - Effective Income Tax Rate Reconciliation (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 12 Months Ended | |||||||||
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Dec. 31, 2014
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Sep. 30, 2014
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Jun. 30, 2014
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Mar. 31, 2014
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Dec. 31, 2013
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Sep. 30, 2013
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Jun. 30, 2013
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Mar. 31, 2013
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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| Income Tax Reconciliation | |||||||||||
| Income tax provision (benefit) at Federal statutory rate | $ (16,317)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate | $ (39,512)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate | $ (14,553)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate | ||||||||
| State income tax, net of federal benefit | 4us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes | (384)us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes | (850)us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes | ||||||||
| Permanent items | 3,221ent_EffectiveIncomeTaxReconciliationPermanentItems | 25,374ent_EffectiveIncomeTaxReconciliationPermanentItems | 4,776ent_EffectiveIncomeTaxReconciliationPermanentItems | ||||||||
| Stock compensation | 1,575us-gaap_IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost | (82)us-gaap_IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost | 315us-gaap_IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost | ||||||||
| Tax credits | (626)us-gaap_IncomeTaxReconciliationTaxCredits | (3,093)us-gaap_IncomeTaxReconciliationTaxCredits | (125)us-gaap_IncomeTaxReconciliationTaxCredits | ||||||||
| Other | (1,376)us-gaap_IncomeTaxReconciliationOtherAdjustments | 1,463us-gaap_IncomeTaxReconciliationOtherAdjustments | 0us-gaap_IncomeTaxReconciliationOtherAdjustments | ||||||||
| Uncertain tax positions | 2,597us-gaap_IncomeTaxReconciliationTaxContingencies | 95us-gaap_IncomeTaxReconciliationTaxContingencies | 0us-gaap_IncomeTaxReconciliationTaxContingencies | ||||||||
| Withholding taxes | 3,386ent_EffectiveIncomeTaxRateReconciliationWithholdingTaxes | 2,831ent_EffectiveIncomeTaxRateReconciliationWithholdingTaxes | 0ent_EffectiveIncomeTaxRateReconciliationWithholdingTaxes | ||||||||
| Rate differential | (2,050)us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential | 5,783us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential | 0us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential | ||||||||
| Rate adjustment | 0us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate | 60us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate | 0us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate | ||||||||
| Change in valuation allowance | 20,160us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance | 9,304us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance | 10,437us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance | ||||||||
| Total provision | $ 7,020us-gaap_IncomeTaxExpenseBenefit | $ 1,454us-gaap_IncomeTaxExpenseBenefit | $ 843us-gaap_IncomeTaxExpenseBenefit | $ 1,257us-gaap_IncomeTaxExpenseBenefit | $ 85us-gaap_IncomeTaxExpenseBenefit | $ 1,161us-gaap_IncomeTaxExpenseBenefit | $ 559us-gaap_IncomeTaxExpenseBenefit | $ 34us-gaap_IncomeTaxExpenseBenefit | $ 10,574us-gaap_IncomeTaxExpenseBenefit | $ 1,839us-gaap_IncomeTaxExpenseBenefit | $ 0us-gaap_IncomeTaxExpenseBenefit |
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- Definition
Effective Income Tax Rate Reconciliation, Withholding Taxes No definition available.
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- Definition
Effective Income Tax Reconciliation, Permanent Items No definition available.
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- Definition
Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign income tax expense (benefit). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible equity-based compensation costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to state and local income tax expense (benefit). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in income tax contingencies. Including, but not limited to, domestic tax contingency, foreign tax contingency, state and local tax contingency, and other contingencies. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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