Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation and Summary of Significant Accounting Policies - Narrative (Details)

v2.4.1.9
Basis of Presentation and Summary of Significant Accounting Policies - Narrative (Details) (USD $)
3 Months Ended
Mar. 31, 2015
airline
segment
Mar. 31, 2014
Dec. 31, 2014
Mar. 31, 2013
Jan. 31, 2013
Oct. 18, 2013
Segments of the Company:            
Number of reportable segments 2us-gaap_NumberOfReportableSegments          
Revenue Recognition            
Equipment sales $ 6,455,000us-gaap_SalesRevenueGoodsNet $ 5,884,000us-gaap_SalesRevenueGoodsNet        
Costs of Sales            
Amortization of intangible assets 5,983,000us-gaap_AmortizationOfIntangibleAssets 6,419,000us-gaap_AmortizationOfIntangibleAssets        
Product Development:            
Capitalized software development costs 600,000us-gaap_CapitalizedComputerSoftwareAmortization 600,000us-gaap_CapitalizedComputerSoftwareAmortization        
Restricted Cash            
Restricted cash 3,700,000us-gaap_RestrictedCashAndCashEquivalents   3,700,000us-gaap_RestrictedCashAndCashEquivalents      
Inventory, net:            
Number of airlines 1ent_NumberofAirlines          
Content Library            
Useful life of licensed film rights 1 year          
Property, plant and equipment:            
Payments to acquire equipment 2,651,000us-gaap_PaymentsToAcquirePropertyPlantAndEquipment 2,032,000us-gaap_PaymentsToAcquirePropertyPlantAndEquipment        
Intangible Assets and Goodwill:            
Goodwill 52,756,000us-gaap_Goodwill   53,014,000us-gaap_Goodwill      
Income Taxes:            
Valuation allowance 59,500,000us-gaap_DeferredTaxAssetsValuationAllowance   73,700,000us-gaap_DeferredTaxAssetsValuationAllowance      
Derivative Warrants:            
Change in fair value of derivative financial instrument 954,000us-gaap_UnrealizedGainLossOnDerivatives (15,538,000)us-gaap_UnrealizedGainLossOnDerivatives        
Public Warrants            
Derivative Warrants:            
Change in fair value of derivative financial instrument 1,000,000us-gaap_UnrealizedGainLossOnDerivatives
/ us-gaap_ClassOfWarrantOrRightAxis
= ent_PublicWarrantsMember
(15,500,000)us-gaap_UnrealizedGainLossOnDerivatives
/ us-gaap_ClassOfWarrantOrRightAxis
= ent_PublicWarrantsMember
       
Domestic Deferred Tax Assets            
Income Taxes:            
Valuation allowance 56,600,000us-gaap_DeferredTaxAssetsValuationAllowance
/ us-gaap_ValuationAllowanceByDeferredTaxAssetAxis
= ent_DomesticDeferredTaxAssetsMember
  70,900,000us-gaap_DeferredTaxAssetsValuationAllowance
/ us-gaap_ValuationAllowanceByDeferredTaxAssetAxis
= ent_DomesticDeferredTaxAssetsMember
     
Foreign Deferred Tax Assets            
Income Taxes:            
Valuation allowance 2,900,000us-gaap_DeferredTaxAssetsValuationAllowance
/ us-gaap_ValuationAllowanceByDeferredTaxAssetAxis
= ent_ForeignDeferredTaxAssetsMember
  2,800,000us-gaap_DeferredTaxAssetsValuationAllowance
/ us-gaap_ValuationAllowanceByDeferredTaxAssetAxis
= ent_ForeignDeferredTaxAssetsMember
     
AIA Purchase Agreement            
Business acquisitions and supplemental pro forma information:            
Business acquisition, percentage acquired   94.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
/ us-gaap_BusinessAcquisitionAxis
= ent_AiaPurchaseAgreementMember
  86.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
/ us-gaap_BusinessAcquisitionAxis
= ent_AiaPurchaseAgreementMember
86.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
/ us-gaap_BusinessAcquisitionAxis
= ent_AiaPurchaseAgreementMember
 
IFES Acquisition Corp Limited            
Business acquisitions and supplemental pro forma information:            
Business acquisition, percentage acquired           100.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
/ us-gaap_BusinessAcquisitionAxis
= ent_IFESAcquisitionCorpLimitedMember
Building and Building Improvements            
Property, plant and equipment:            
Property, plant and equipment, useful life 30 years          
Connectivity equipment            
Property, plant and equipment:            
Property, plant and equipment, useful life 5 years          
Minimum            
Restricted Cash            
Line of credit, period secured by cash 1 year          
Minimum | Equipment            
Property, plant and equipment:            
Property, plant and equipment, useful life 3 years          
Maximum            
Restricted Cash            
Line of credit, period secured by cash 3 years          
Maximum | Equipment            
Property, plant and equipment:            
Property, plant and equipment, useful life 10 years          
Other Current Assets            
Restricted Cash            
Restricted cash 1,500,000us-gaap_RestrictedCashAndCashEquivalents
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherCurrentAssetsMember
  1,500,000us-gaap_RestrictedCashAndCashEquivalents
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherCurrentAssetsMember
     
Other Non-current Assets            
Restricted Cash            
Restricted cash 2,200,000us-gaap_RestrictedCashAndCashEquivalents
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherNoncurrentAssetsMember
  2,200,000us-gaap_RestrictedCashAndCashEquivalents
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherNoncurrentAssetsMember
     
Inventory and Other Long-Term Assets            
Inventory, net:            
Deferred equipment costs 8,000,000us-gaap_DeferredCostsCurrent
/ us-gaap_BalanceSheetLocationAxis
= ent_InventoryandOtherLongTermAssetsMember
  7,800,000us-gaap_DeferredCostsCurrent
/ us-gaap_BalanceSheetLocationAxis
= ent_InventoryandOtherLongTermAssetsMember
     
STC Fees            
Revenue Recognition            
Equipment sales 0us-gaap_SalesRevenueGoodsNet
/ us-gaap_ProductOrServiceAxis
= ent_SupplementalTypeCertificatesSTCFeesMember
200,000us-gaap_SalesRevenueGoodsNet
/ us-gaap_ProductOrServiceAxis
= ent_SupplementalTypeCertificatesSTCFeesMember
       
Content            
Revenue Recognition            
Equipment sales 0us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementBusinessSegmentsAxis
= ent_ContentMember
0us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementBusinessSegmentsAxis
= ent_ContentMember
       
Content | Cost of sales            
Costs of Sales            
Amortization of intangible assets $ 200,000us-gaap_AmortizationOfIntangibleAssets
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_CostOfSalesMember
/ us-gaap_StatementBusinessSegmentsAxis
= ent_ContentMember
$ 1,300,000us-gaap_AmortizationOfIntangibleAssets
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_CostOfSalesMember
/ us-gaap_StatementBusinessSegmentsAxis
= ent_ContentMember