XML 97 R90.htm IDEA: XBRL DOCUMENT v3.24.2.u1

Other Assets - Additional Information (Details) $ in Millions	Jun. 30, 2024 USD ($)
Taxable MRBs and Taxable GILs [Member] | TOB Trust [Member]
Other Assets [Line Items]
Assets held in trust	$ 19.5

X

- Definition

Other assets.

+ References

No definition available.

+ Details

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

X

- Definition

The total amount of cash and securities held by third party trustees pursuant to terms of debt instruments or other agreements as of the date of each statement of financial position presented, which can be used by the trustee only to pay the noncurrent portion of specified obligations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

+ Details

Name:	us-gaap_AssetsHeldInTrust
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ghi_TaxableMortgageRevenueBondsAndTaxableGovernmentalIssuerLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LongtermDebtTypeAxis=ghi_TOBTrustMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: