XML 98 R91.htm IDEA: XBRL DOCUMENT
v3.24.1.u1

Allowance for Credit Losses - Summary of Changes in Partnership's Allowance for Credit Losses (Details) - USD ($) | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Balance, beginning of period |  | $ 4,097,000 | $ 495,000
Recovery of prior credit loss |  | (17,155) | (16,967)
Cumulative-effect adjustment upon adoption |  |  | 5,949,000
Current provision for expected credit losses |  | (806,000) | (545,000)
Balance, end of period |  | 3,291,000 | 5,899,000
MRB and taxable MRB investments [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Balance, beginning of period |  | 9,910,079 | 9,978,891
Recovery of prior credit loss | [1] | (17,155) | (16,967)
Balance, end of period | [2] | 9,892,924 | 9,961,924
Governmental Issuer Loans [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Balance, beginning of period |  | 1,294,000 | 0
Cumulative-effect adjustment upon adoption |  |  | 2,145,000
Current provision for expected credit losses |  | (128,000) | (65,000)
Balance, end of period |  | 1,166,000 | 2,080,000
Taxable Governmental Issuer Loans [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Balance, beginning of period |  | 77,000 | 0
Cumulative-effect adjustment upon adoption |  |  | 79,000
Current provision for expected credit losses |  | (36,000) | 10,000
Balance, end of period |  | 41,000 | 89,000
Property Loans [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Balance, beginning of period |  | 2,048,000 | 495,000
Cumulative-effect adjustment upon adoption |  |  | 2,108,000
Current provision for expected credit losses |  | (420,000) | (153,000)
Balance, end of period |  | 1,628,000 | 2,450,000
Unfunded Commitments [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Balance, beginning of period |  | 678,000 | 0
Cumulative-effect adjustment upon adoption |  |  | 1,617,000
Current provision for expected credit losses |  | (222,000) | (337,000)
Balance, end of period |  | $ 456,000 | $ 1,280,000
[1] | The Partnership compared the present value of cash flows expected to be collected to the amortized cost basis of the Live 929 Apartments Series 2022A MRB, which indicated a recovery of value. As the recovery was identified prior to the effective date of the CECL standard, the Partnership will accrete the recovery of prior credit loss into investment income over the term of the MRB.
[2] | The allowance for credit losses as of March 31, 2024 and 2023 was related to the Provision Center 2014-1 MRB and the Live 929 Apartments – 2022A MRB.

X
- Definition Cumulative-effect adjustment upon adoption. + References No definition available. + Details
Name: | ghi_CumulativeEffectAdjustmentUponAdoption
Namespace Prefix: | ghi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(4)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (1) -Publisher SEC Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (3) -Publisher SEC Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (c) -Publisher SEC Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479344/326-20-45-1 Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c)(1) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLosses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph c -Publisher SEC + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of increase in allowance for credit loss on financing receivable from recovery. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c)(4) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of credit loss expense (reversal of expense) for financing receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(11)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483589/942-220-S99-1 + Details
Name: | us-gaap_ProvisionForLoanLossesExpensed
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_InvestmentTypeAxis=ghi_MortgageRevenueBondAndTaxableMortgageRevenueBondInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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