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Business (Details)
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Dec. 31, 2014
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Apr. 30, 2014
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Dec. 31, 2013
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Jan. 31, 2013
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| Business Acquisition [Line Items] | ||||
| Ownership percentage in subsidiary | 86.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired | |||
| AIA Purchase Agreement | ||||
| Business Acquisition [Line Items] | ||||
| Ownership percentage in subsidiary |
100.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired / us-gaap_BusinessAcquisitionAxis = ent_AiaPurchaseAgreementMember |
6.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired / us-gaap_BusinessAcquisitionAxis = ent_AiaPurchaseAgreementMember |
94.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired / us-gaap_BusinessAcquisitionAxis = ent_AiaPurchaseAgreementMember |
86.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired / us-gaap_BusinessAcquisitionAxis = ent_AiaPurchaseAgreementMember |
| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Percentage of voting equity interests acquired at the acquisition date in the business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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