XML 92 R81.htm IDEA: XBRL DOCUMENT
v3.23.2

Investments in Unconsolidated Entities - Summary of Sales Information of Partnership Investments in Unconsolidated Entities - (Parenthetical) (Details) - USD ($) | 1 Months Ended | 6 Months Ended
--- | --- | ---
May 31, 2023 | Feb. 28, 2023 | Mar. 31, 2022 | Jun. 30, 2022
Bulverde, TX [Member] | Vantage At Bulverde [Member] |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Cash received/sales proceeds returned |  |  |  | $ 60,000
Germantown, TN [Member] | Vantage At Germantown [Member] |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Cash received/sales proceeds returned |  |  | $ 4,000 |
Murfreesboro, TN [Member] | Vantage At Murfreesboro [Member] |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Cash received/sales proceeds returned |  | $ 6,200 |  |
San Antonio, TX [Member] | Vantage At O'Connor [Member] |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Cash received/sales proceeds returned | $ 12,000 |  |  |

X
- Definition The cash inflow from the sale of interest in partnership during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3179-108585 + Details
Name: | us-gaap_ProceedsFromDivestitureOfRealEstatePartnership
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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_ScheduleOfEquityMethodInvestmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_StatementGeographicalAxis=ghi_BulverdeTXMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_VantageAtBulverdeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=ghi_GermantownTNMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_VantageAtGermantownMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=ghi_MurfreesboroTNMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_VantageAtMurfreesboroMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=ghi_SanAntonioTexasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_VantageAtOConnorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |