Discontinued Operations - Additional Information (Details)	Jun. 23, 2021
Discontinued Operations And Disposal Groups [Abstract]
Membership interest held by passive investor in Monomoy Properties	5.00%

Membership interest held by passive investor in Monomoy Properties.

No definition available.

Name:	geg_MembershipInterestHeldByPassiveInvestorInMonomoyProperties
Namespace Prefix:	geg_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant