XML 73 R63.htm IDEA: XBRL DOCUMENT
v3.20.4

Lessee Operating Leases - Additional Information (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Jun. 30, 2020
Lessee Lease Description [Line Items] |  |
Remaining right of use assets | $ 5,015 | $ 5,392
Lease liabilities | 5,285 |
Current portion of lease liabilities | 1,518 | 1,617
Lease liabilities, net of current portion | $ 3,767 | 4,060
Lessee, operating lease term | 88 months |
Lessee, operating leases optional lease extension period | 60 months |
Existence of option to extend operating lease | true |
Increase in average rate of lease payment | 2.40% |
Facilities |  |
Lessee Lease Description [Line Items] |  |
Remaining right of use assets | $ 4,916 | 5,265
Lease liabilities | 5,186 | 5,550
Current portion of lease liabilities | 1,467 | 1,560
Lease liabilities, net of current portion | $ 3,719 | 3,990
Existence of option to extend operating lease | true |
Vehicles |  |
Lessee Lease Description [Line Items] |  |
Remaining right of use assets | $ 52 | 61
Lease liabilities | 52 | 61
Current portion of lease liabilities | 20 | 20
Lease liabilities, net of current portion | $ 32 | 41
Vehicles | DME, Inc. |  |
Lessee Lease Description [Line Items] |  |
Lessee, operating lease term | 60 months |
Lessee, termination description | Each lease may be terminated by the lessee with 30-days’ notice after the first 13 months of the lease subject to certain early termination costs, including residual value guarantees. |
Existence of option to terminate operating lease | false |
Equipment |  |
Lessee Lease Description [Line Items] |  |
Remaining right of use assets | $ 47 | 66
Lease liabilities | 47 | 66
Current portion of lease liabilities | 31 | 37
Lease liabilities, net of current portion | 16 | $ 29
Minimum |  |
Lessee Lease Description [Line Items] |  |
Increase in average rate of lease payment, value | $ 28 |
Minimum | Facilities |  |
Lessee Lease Description [Line Items] |  |
Lessee, operating lease term | 12 months |
Minimum | Equipment |  |
Lessee Lease Description [Line Items] |  |
Lessee, operating lease term | 36 months |
Maximum |  |
Lessee Lease Description [Line Items] |  |
Increase in average rate of lease payment, value | $ 32 |
Maximum | Facilities |  |
Lessee Lease Description [Line Items] |  |
Lessee, operating lease term | 96 months |
Lessee, operating leases optional lease extension period | 120 months |
Maximum | Equipment |  |
Lessee Lease Description [Line Items] |  |
Lessee, operating lease term | 48 months |

X
- Definition Increase in average rate of lease payment. + References No definition available. + Details
Name: | geg_IncreaseInAverageRateOfLeasePayment
Namespace Prefix: | geg_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Increase in average rate of lease payment, value. + References No definition available. + Details
Name: | geg_IncreaseInAverageRateOfLeasePaymentValue
Namespace Prefix: | geg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Lessee operating lease optional lease extension period. + References No definition available. + Details
Name: | geg_LesseeOperatingLeaseOptionalLeaseExtensionPeriod
Namespace Prefix: | geg_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_LesseeLeaseDescriptionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Indicates (true false) whether lessee has option to extend operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918673-209980 + Details
Name: | us-gaap_LesseeOperatingLeaseExistenceOfOptionToExtend
Namespace Prefix: | us-gaap_
Data Type: | xbrli:booleanItemType
Balance Type: | na
Period Type: | duration

X
- Definition Indicates (true false) whether lessee has option to terminate operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918673-209980 + Details
Name: | us-gaap_LesseeOperatingLeaseExistenceOfOptionToTerminate
Namespace Prefix: | us-gaap_
Data Type: | xbrli:booleanItemType
Balance Type: | na
Period Type: | duration

X
- Definition Description of terms and conditions of option to terminate lessee's operating lease. Includes, but is not limited to, information about option recognized as part of right-of-use asset and lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918673-209980 + Details
Name: | us-gaap_LesseeOperatingLeaseOptionToTerminate
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918673-209980 + Details
Name: | us-gaap_LesseeOperatingLeaseTermOfContract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977 + Details
Name: | us-gaap_OperatingLeaseLiability
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977 + Details
Name: | us-gaap_OperatingLeaseLiabilityCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977 + Details
Name: | us-gaap_OperatingLeaseLiabilityNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977 + Details
Name: | us-gaap_OperatingLeaseRightOfUseAsset
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_BuildingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_VehiclesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=geg_GreatElmDMEIncorporatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_EquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |