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Discontinued Operations - Additional Information (Details) $ in Thousands	12 Months Ended
	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

X

- References

No definition available.

+ Details

Name:	us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration