Annual report pursuant to Section 13 and 15(d)

Property, Plant, and Equipment, net - Schedule of Property, Plant and Equipment (Details)

v2.4.1.9
Property, Plant, and Equipment, net - Schedule of Property, Plant and Equipment (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Property, Plant and Equipment [Line Items]    
Total property, plant, and equipment $ 36,425us-gaap_PropertyPlantAndEquipmentGross $ 28,457us-gaap_PropertyPlantAndEquipmentGross
Accumulated depreciation (12,774)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment (7,660)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Property, plant, and equipment, net 23,651us-gaap_PropertyPlantAndEquipmentNet 20,797us-gaap_PropertyPlantAndEquipmentNet
Leasehold improvements    
Property, Plant and Equipment [Line Items]    
Total property, plant, and equipment 1,592us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LeaseholdImprovementsMember
1,272us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LeaseholdImprovementsMember
Furniture and fixtures    
Property, Plant and Equipment [Line Items]    
Total property, plant, and equipment 2,293us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_FurnitureAndFixturesMember
1,590us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_FurnitureAndFixturesMember
Equipment    
Property, Plant and Equipment [Line Items]    
Total property, plant, and equipment 17,593us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_EquipmentMember
15,362us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_EquipmentMember
Computer equipment    
Property, Plant and Equipment [Line Items]    
Total property, plant, and equipment 4,115us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_ComputerEquipmentMember
3,905us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_ComputerEquipmentMember
Computer software and ERP system    
Property, Plant and Equipment [Line Items]    
Total property, plant, and equipment 5,950us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_SoftwareAndSoftwareDevelopmentCostsMember
2,985us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_SoftwareAndSoftwareDevelopmentCostsMember
Automobiles    
Property, Plant and Equipment [Line Items]    
Total property, plant, and equipment 307us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_AutomobilesMember
297us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_AutomobilesMember
Buildings    
Property, Plant and Equipment [Line Items]    
Total property, plant, and equipment 2,649us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_BuildingMember
2,649us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_BuildingMember
Albatross (aircraft)    
Property, Plant and Equipment [Line Items]    
Total property, plant, and equipment 425us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= ent_AirplaneMember
385us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= ent_AirplaneMember
Other    
Property, Plant and Equipment [Line Items]    
Total property, plant, and equipment $ 1,501us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_OtherIntangibleAssetsMember
$ 12us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_OtherIntangibleAssetsMember