XML 87 R76.htm IDEA: XBRL DOCUMENT v3.23.2

Property Loans - Additional Information (Details) - USD ($)	1 Months Ended				3 Months Ended		6 Months Ended
	Jun. 30, 2023	Apr. 30, 2022	Mar. 31, 2022	Jan. 31, 2022	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Jan. 01, 2023	Dec. 31, 2022
Property Loans Net Of Loan Loss Allowance [Line Items]
Allowance for credit losses									$ 5,900,000
Advanced additional funds							$ 17,839,242	$ 61,938,490
Other interest income					$ 4,646,347	$ 1,463,126	9,056,012	4,339,093
Property Loans [Member]
Property Loans Net Of Loan Loss Allowance [Line Items]
Allowance for credit losses	$ 2,200,000				2,200,000		2,200,000
Accrued interest receivable	1,800,000				$ 1,800,000		1,800,000			$ 3,200,000
Live 929 Apartments [Member]
Property Loans Net Of Loan Loss Allowance [Line Items]
Allowance for credit losses									$ 495,000
Amount received as payment in full for outstanding principal and interest on a property loan				$ 1,000,000.0
Ohio Properties [Member]
Property Loans Net Of Loan Loss Allowance [Line Items]
Amount received as payment in full for outstanding principal and interest on a property loan			$ 2,400,000
Accrued interest redemption on notes receivable			4,300,000
Other interest income			$ 1,700,000
Greens Property [Member]
Property Loans Net Of Loan Loss Allowance [Line Items]
Accrued interest redemption on notes receivable							$ 1,600,000
Scharbauer Flats Apartments [Member]
Property Loans Net Of Loan Loss Allowance [Line Items]
Partnership recognized loan fee	$ 33,000
Loan maturity date	Jan. 01, 2024
Poppy Grove Apartments [Member]
Property Loans Net Of Loan Loss Allowance [Line Items]
Amount to paid for outstanding principal and interest on a note receivable		$ 825,000
Magnolia Heights [Member]
Property Loans Net Of Loan Loss Allowance [Line Items]
Property loan commitments						$ 10,300,000		$ 10,300,000

X

- Definition

Accrued interest receivable

+ References

No definition available.

+ Details

Name:	ghi_AccruedInterestReceivable
Namespace Prefix:	ghi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Accrued interest redemption on notes receivable.

+ References

No definition available.

+ Details

Name:	ghi_AccruedInterestRedemptionOnNotesReceivable
Namespace Prefix:	ghi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

allowance for credit losses.

+ References

No definition available.

+ Details

Name:	ghi_AllowanceForCreditLosses
Namespace Prefix:	ghi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

loan maturity date.

+ References

No definition available.

+ Details

Name:	ghi_LoanMaturityDate
Namespace Prefix:	ghi_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Partnership recognized loan fee.

+ References

No definition available.

+ Details

Name:	ghi_PartnershipRecognizedLoanFee
Namespace Prefix:	ghi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Payments for Property loans.

+ References

No definition available.

+ Details

Name:	ghi_PaymentsForPropertyLoans
Namespace Prefix:	ghi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Property loan maximum commitment.

+ References

No definition available.

+ Details

Name:	ghi_PropertyLoanMaximumCommitment
Namespace Prefix:	ghi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Property loans, net of loan loss allowance.

+ References

No definition available.

+ Details

Name:	ghi_PropertyLoansNetOfLoanLossAllowanceLineItems
Namespace Prefix:	ghi_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of operating interest income, including, but not limited to, amortization and accretion of premiums and discounts on securities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(e))
-URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227

+ Details

Name:	us-gaap_InterestIncomeOperating
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The cash outflow to acquire an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date. Such amount may include accrued interest receivable in accordance with the terms of the note. The note also may contain provisions including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among myriad other features and characteristics.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3213-108585

+ Details

Name:	us-gaap_PaymentsToAcquireNotesReceivable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3179-108585

+ Details

Name:	us-gaap_ProceedsFromCollectionOfNotesReceivable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_InformationByCategoryOfDebtSecurityAxis=ghi_PropertyLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_Live929ApartmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_OhioPropertiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_GreensPropertyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_ScharbauerFlatsApartmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_PoppyGroveApartmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_MagnoliaHeightsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: