XML 119 R112.htm IDEA: XBRL DOCUMENT
v3.25.2

Commitments and Contingencies - Summary of Partnership's Total and Remaining Commitments (Details) - USD ($) | 6 Months Ended |
--- | --- | ---
Jun. 30, 2025 | Dec. 31, 2024
Commitments And Other Guarantees [Line Items] |  |
Total Initial Commitment | $ 198,902,232 |
Remaining Commitment as of June 30, 2025 | 96,608,252 |
Meadow Valley [Member] |  |
Commitments And Other Guarantees [Line Items] |  |
Remaining Commitment as of June 30, 2025 | 1,500,000 | $ 2,900,000
Mortgage Revenue Bonds and Taxable Mortgage Revenue Bonds [Member] |  |
Commitments And Other Guarantees [Line Items] |  |
Total Initial Commitment | 91,000,000 |
Remaining Commitment as of June 30, 2025 | $ 10,450,000 |
Mortgage Revenue Bonds and Taxable Mortgage Revenue Bonds [Member] | Meadow Valley [Member] | Series A [Member] |  |
Commitments And Other Guarantees [Line Items] |  |
Commitment Date | 2021-12 |
Maturity Date | 2029-12 |
Interest Rate | 6.25% |
Total Initial Commitment | $ 44,000,000 |
Remaining Commitment as of June 30, 2025 | $ 1,500,000 |
Mortgage Revenue Bonds and Taxable Mortgage Revenue Bonds [Member] | The Residency at Empire [Member] | Series BB-4 [Member] |  |
Commitments And Other Guarantees [Line Items] |  |
Commitment Date | 2022-12 |
Maturity Date | 2040-12 |
Interest Rate | 6.45% |
Total Initial Commitment | $ 47,000,000 |
Remaining Commitment as of June 30, 2025 | $ 8,950,000 |
Mortgage Revenue Bonds and Taxable Mortgage Revenue Bonds [Member] | The Residency at Empire [Member] | Series BB-T [Member] |  |
Commitments And Other Guarantees [Line Items] |  |
Commitment Date | 2022-12 |
Maturity Date | 2025-12 |
Interest Rate | 7.45% |
Total Initial Commitment | $ 9,404,500 |
Remaining Commitment as of June 30, 2025 | $ 8,404,500 |
Mortgage Revenue Bonds and Taxable Mortgage Revenue Bonds [Member] | Gateway and Yarbrough Predevelopment Project [Member] |  |
Commitments And Other Guarantees [Line Items] |  |
Commitment Date | 2025-06 |
Maturity Date | 2026-07 |
Interest Rate | 9.00% |
Total Initial Commitment | $ 2,000,000 |
Remaining Commitment as of June 30, 2025 | 1,200,000 |
Taxable Mortgage Revenue Bonds [Member] |  |
Commitments And Other Guarantees [Line Items] |  |
Total Initial Commitment | 11,404,500 |
Remaining Commitment as of June 30, 2025 | $ 9,604,500 |
Taxable Governmental Issuer Loans [Member] | Poppy Grove III [Member] |  |
Commitments And Other Guarantees [Line Items] |  |
Commitment Date | 2022-09 |
Maturity Date | 2025-10 |
Interest Rate | 6.78% |
Total Initial Commitment | $ 18,780,493 |
Remaining Commitment as of June 30, 2025 | $ 6,280,493 |
Property Loans [Member] | Sandoval Flats [Member] |  |
Commitments And Other Guarantees [Line Items] |  |
Commitment Date | 2024-11 |
Maturity Date | 2027-12 |
Interest Rate | 7.48% |
Total Initial Commitment | $ 29,846,000 |
Remaining Commitment as of June 30, 2025 | 28,846,000 |
Joint Venture Investments [Member] |  |
Commitments And Other Guarantees [Line Items] |  |
Total Initial Commitment | 25,950,239 |
Remaining Commitment as of June 30, 2025 | $ 19,506,259 |
Joint Venture Investments [Member] | Vantage at San Marcos [Member] |  |
Commitments And Other Guarantees [Line Items] |  |
Commitment Date | 2020-11 |
Total Initial Commitment | $ 9,914,529 |
Remaining Commitment as of June 30, 2025 | $ 8,943,914 |
Joint Venture Investments [Member] | Freestone Greeley [Member] |  |
Commitments And Other Guarantees [Line Items] |  |
Commitment Date | 2022-10 |
Total Initial Commitment | $ 16,035,710 |
Remaining Commitment as of June 30, 2025 | $ 10,562,345 |
Bond Purchase Commitment [Member] | Kindred Apartments [Member] |  |
Commitments And Other Guarantees [Line Items] |  |
Commitment Date | 2025-03 |
Maturity Date | 2027-12 |
Interest Rate | 6.875% |
Total Initial Commitment | $ 21,921,000 |
Remaining Commitment as of June 30, 2025 | $ 21,921,000 |

X
- Definition Commitment date. + References No definition available. + Details
Name: | ghi_CommitmentDate
Namespace Prefix: | ghi_
Data Type: | xbrli:gYearMonthItemType
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 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 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
- Definition Remaining partnership's commitments amount. + References No definition available. + Details
Name: | ghi_RemainingPartnershipsCommitmentsAmount
Namespace Prefix: | ghi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

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

X
- Details
Name: | srt_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis=us-gaap_FirstMortgageMember
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_SeriesBbTMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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

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

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

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

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

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

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

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