XML 70 R59.htm IDEA: XBRL DOCUMENT
v3.23.2

Summary of Significant Accounting Policies - Additional Information (Details) $ / shares in Units, shares in Millions |  | 6 Months Ended | 12 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 14, 2023 $ / shares | Jun. 30, 2023 USD ($) Property $ / shares shares | Dec. 31, 2022 USD ($) | Mar. 31, 2023 $ / shares | Jan. 31, 2023 | Jan. 01, 2023 USD ($) | Oct. 31, 2022 | Jun. 30, 2022 $ / shares | Mar. 31, 2022 $ / shares
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Partners capital | $ |  | $ 344,252,165 | $ 323,955,517 |  |  |  |  |  |
Supplemental distribution payable | $ / shares |  | $ 0.368 |  | $ 0.368 |  |  |  | $ 0.556 | $ 0.322
Increase in short-term interest rates in basis points |  | 1.00% | 4.25% |  |  |  |  |  |
ASU 2016-13 [Member] |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Partners capital | $ |  |  |  |  |  | $ 5,900,000 |  |  |
Restricted Unit Awards [Member] | Greystone Manager [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Approved grant of restricted units and other awards to employees | shares |  | 1.0 |  |  |  |  |  |  |
Greens Hold Co [Member] |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Number of Real Estate Properties | Property |  | 1 |  |  |  |  |  |  |
Ownership interest percentage in MF property |  | 100.00% |  |  |  |  |  |  |
Lindo Paseo LLC [Member] |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Ownership interest percentage in MF property |  | 100.00% |  |  |  |  |  |  |
Beneficial Unit Certificates [Member] |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Supplemental distribution payable | $ / shares | $ 0.07 |  |  |  |  |  |  |  |
Partnership distribution paid at ratio | 0.00448 |  |  |  | 0.0105 |  | 0.01044 |  |
Distribution payable, record date | Jun. 30, 2023 |  |  |  |  |  |  |  |

X
- Definition Increase in short term interest rates in basis points. + References No definition available. + Details
Name: | ghi_IncreaseInShortTermInterestRatesInBasisPoints
Namespace Prefix: | ghi_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Partnership distribution paid at ratio. + References No definition available. + Details
Name: | ghi_PartnershipDistributionPaidAtRatio
Namespace Prefix: | ghi_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Real estate ownership percentage. + References No definition available. + Details
Name: | ghi_RealEstateOwnershipPercentage
Namespace Prefix: | ghi_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Summary of significant accounting policies. + References No definition available. + Details
Name: | ghi_SummaryOfSignificantAccountingPoliciesLineItems
Namespace Prefix: | ghi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The per share amount of a dividend declared, but not paid, as of the financial reporting date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4304-108586 + Details
Name: | us-gaap_DividendsPayableAmountPerShare
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Date the holder must own the stock to be entitled to the dividend, in YYYY-MM-DD format. + References No definition available. + Details
Name: | us-gaap_DividendsPayableDateOfRecordDayMonthAndYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of real estate properties owned as of the balance sheet date. + References No definition available. + Details
Name: | us-gaap_NumberOfRealEstateProperties
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The amount of ownership interest of different classes of partners in limited partnership. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI https://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 + Details
Name: | us-gaap_PartnersCapital
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Number of shares authorized for issuance under share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=us-gaap_AccountingStandardsUpdate201613Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis=ghi_GreystoneManagerMember
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: |

X
- Details
Name: | dei_LegalEntityAxis=ghi_GreensHoldCoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=ghi_LindoPaseoLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PartnerTypeOfPartnersCapitalAccountAxis=ghi_BeneficialUnitCertificatesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |