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Discontinued Operations - Additional Information (Details) $ in Thousands | 12 Months Ended
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Jun. 30, 2024 USD ($)
Discontinued Operations and Disposal Groups [Abstract] |
Recognized gain on payment to non-controlling interests | $ 20

X
- Definition Recognized gain on adjustment to payments due of non-controlling interest. + References No definition available. + Details
Name: | geg_RecognizedGainOnAdjustmentToPaymentsDueOfNoncontrollingInterest
Namespace Prefix: | geg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration