XML 118 R111.htm IDEA: XBRL DOCUMENT
v3.24.1.u1

Commitments and Contingencies - Summary of Partnership's Total and Remaining Commitments (Parenthetical) (Details) - USD ($) | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2024 | Feb. 01, 2025 | Jul. 31, 2023
Commitments And Other Guarantees [Line Items] |  |  |  |
Total Initial Commitment | $ 492,351,755 |  |  |
Joint Venture Investments [Member] |  |  |  |
Commitments And Other Guarantees [Line Items] |  |  |  |
Total Initial Commitment | $ 97,729,955 |  |  |
The Residency at the Entrepreneur [Member] | Series J-4 [Member] | Mortgage Revenue Bonds [Member] |  |  |  |
Commitments And Other Guarantees [Line Items] |  |  |  |
Fixed interest rate | 8.00% |  |  |
The Residency at Empire [Member] | Series BB-4 [Member] | Mortgage Revenue Bonds [Member] |  |  |  |
Commitments And Other Guarantees [Line Items] |  |  |  |
Fixed interest rate | 10.00% |  |  |
The Residency at Empire [Member] | Series BB Three Mortgage [Member] |  |  |  |
Commitments And Other Guarantees [Line Items] |  |  |  |
Maturity Date | 2029-12 |  |  |
Interest Rate | 6.00% |  |  |
Vantage at Loveland [Member] | Joint Venture Investments [Member] |  |  |  |
Commitments And Other Guarantees [Line Items] |  |  |  |
Total Initial Commitment | $ 18,215,000 | [1] |  | $ 16,300,000
Increase in partnerships commitment amount |  |  |  | $ 1,900,000
Scenario Forecast [Member] | SOFR [Member] | Sandy Creek Apartments [Member] |  |  |  |
Commitments And Other Guarantees [Line Items] |  |  |  |
Interest Rate |  |  | 3.35% |
Minimum [Member] |  |  |  |
Commitments And Other Guarantees [Line Items] |  |  |  |
Extended maturity period | 6 months |  |  |
Minimum [Member] | Floor Rate [Member] |  |  |  |
Commitments And Other Guarantees [Line Items] |  |  |  |
Variable Interest Rate | 0.27% |  |  |
Maximum [Member] |  |  |  |
Commitments And Other Guarantees [Line Items] |  |  |  |
Extended maturity period | 12 months |  |  |
Maximum [Member] | SOFR [Member] |  |  |  |
Commitments And Other Guarantees [Line Items] |  |  |  |
Interest Rate | 3.25% |  |  |
Interest rate period | 10 years |  |  |
[1] | In July 2023, the Partnership's initial commitment of $16.3 million was increased by $1.9 million upon meeting certain conditions as outlined in the original agreement.

X
- Definition Commitment interest rate period. + References No definition available. + Details
Name: | ghi_CommitmentInterestRatePeriod
Namespace Prefix: | ghi_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Commitment maturity date. + References No definition available. + Details
Name: | ghi_CommitmentMaturityDate
Namespace Prefix: | ghi_
Data Type: | xbrli:gYearMonthItemType
Balance Type: | na
Period Type: | duration

X
- Definition Commitments and other guarantees. + References No definition available. + Details
Name: | ghi_CommitmentsAndOtherGuaranteesLineItems
Namespace Prefix: | ghi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Extended maturity period. + References No definition available. + Details
Name: | ghi_ExtendedMaturityPeriod
Namespace Prefix: | ghi_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Increase in partnerships commitment amount. + References No definition available. + Details
Name: | ghi_IncreaseInPartnershipsCommitmentAmount
Namespace Prefix: | ghi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Investment commitments interest rate percentage + References No definition available. + Details
Name: | ghi_InvestmentCommitmentsInterestRatePercentage
Namespace Prefix: | ghi_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Loan financing basis spread on variable rate. + References No definition available. + Details
Name: | ghi_LoanFinancingBasisSpreadOnVariableRate
Namespace Prefix: | ghi_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Loan Financing Fixed Interest Rate. + References No definition available. + Details
Name: | ghi_LoanFinancingFixedInterestRate
Namespace Prefix: | ghi_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Partnership's commitments amount + References No definition available. + Details
Name: | ghi_PartnershipsCommitmentsAmount
Namespace Prefix: | ghi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ghi_JointVentureInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | srt_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis=ghi_SeriesJFourMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=ghi_MortgageRevenueBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | srt_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis=ghi_SeriesBbFourMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis=ghi_SeriesBbThreeMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_SandyCreekApartmentsMember
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: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateFloorMember
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: |