XML 137 R123.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Commitments and Contingencies - Summary of Partnership's Bond Purchase Commitments (Details) - Anaheim & Walnut [Member] - Bond Purchase Commitment [Member] - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022
Bond Purchase Commitment [Line Items] |  |
Commitment Date | 2021-09 |
Maximum Committed Amounts Remaining | $ 3,900,000 |
Interest Rate | 4.85% |
Estimated Closing Date | Q3 2024 |
Fair Value | $ 197,788 | $ 98,929

X
- Definition Bond Purchase Commitment Estimated Closing Date Description. + References No definition available. + Details
Name: | ghi_BondPurchaseCommitmentEstimatedClosingDateDescription
Namespace Prefix: | ghi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Bond purchase commitment fair value. + References No definition available. + Details
Name: | ghi_BondPurchaseCommitmentFairValue
Namespace Prefix: | ghi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Bond Purchase Commitment Interest Rate Percentage. + References No definition available. + Details
Name: | ghi_BondPurchaseCommitmentInterestRatePercentage
Namespace Prefix: | ghi_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Bond Purchase Commitment. + References No definition available. + Details
Name: | ghi_BondPurchaseCommitmentLineItems
Namespace Prefix: | ghi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Forward Bond Purchase Commitment Year and Month. + References No definition available. + Details
Name: | ghi_BondPurchaseCommitmentYearAndMonth
Namespace Prefix: | ghi_
Data Type: | xbrli:gYearMonthItemType
Balance Type: | na
Period Type: | duration

X
- Definition Bond Purchase Maximum Commitment Amount. + References No definition available. + Details
Name: | ghi_BondPurchaseMaximumCommitmentAmount
Namespace Prefix: | ghi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_AnaheimAndWalnutMember
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: |