XML 85 R75.htm IDEA: XBRL DOCUMENT
v3.23.3

Governmental Issuer Loans - Schedule of Principal and Accrued Interest Paid (Details) - Governmental Issuer Loans [Member] | 9 Months Ended
--- | ---
Sep. 30, 2023 USD ($)
Governmental Issuer Loans [Line Items] |
Principal Proceeds | $ 104,635,623
Oasis at Twin Lakes [Member] |
Governmental Issuer Loans [Line Items] |
Month Redeemed | 2023-06
Principal Proceeds | $ 34,000,000
Hope on Broadway [Member] |
Governmental Issuer Loans [Line Items] |
Month Redeemed | 2023-07
Principal Proceeds | $ 13,105,623
Hilltop at Signal Hills [Member] |
Governmental Issuer Loans [Line Items] |
Month Redeemed | 2023-08
Principal Proceeds | $ 24,450,000
Centennial Crossings [Member] |
Governmental Issuer Loans [Line Items] |
Month Redeemed | 2023-09
Principal Proceeds | $ 33,080,000

X
- Definition Governmental issuer loans. + References No definition available. + Details
Name: | ghi_GovernmentalIssuerLoansLineItems
Namespace Prefix: | ghi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Month and year of principal and accrued interest redeemed. + References No definition available. + Details
Name: | ghi_MonthAndYearOfPrincipalAndAccruedInterestRedeemed
Namespace Prefix: | ghi_
Data Type: | xbrli:gYearMonthItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash inflow associated with principal collections from a borrowing supported by a written promise to pay an obligation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-12 + Details
Name: | us-gaap_ProceedsFromCollectionOfNotesReceivable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

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

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

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

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