XML 18 R6.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Consolidated Statements of Partners' Capital - USD ($) | Total | Tier 2 [Member] | Tier 3 [Member] | General Partner [Member] | General Partner [Member] Tier 2 [Member] | BUCs - Restricted and Unrestricted [Member] | BUCs - Restricted and Unrestricted [Member] Tier 2 [Member] | BUCs - Restricted and Unrestricted [Member] Tier 3 [Member] | Number of BUCs - Restricted and Unrestricted [Member] | Accumulated Other Comprehensive Income (Loss) [Member]
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2021 | $ 372,412,027 |  |  | $ 765,550 |  | $ 371,646,477 |  |  |  | $ 114,040,260
Partners' Capital Account, Units at Dec. 31, 2021 |  |  |  |  |  |  |  |  | 22,941,752 |
Distributions paid or accrued: |  |  |  |  |  |  |  |  |  |
Regular distribution | (2,127,734) |  |  | (21,277) |  | (2,106,457) |  |  |  |
Distribution of income (Note 23) |  | $ (12,969,459) | $ (26,835,826) |  | $ (3,242,365) |  | $ (9,727,094) | $ (26,835,826) |  |
Cash paid in lieu of fractional BUCs | (2,506) |  |  |  |  | (2,506) |  |  |  |
Net income allocable to Partners | 62,695,541 |  |  | 3,471,267 |  | 59,224,274 |  |  |  |
Rounding of BUCs related to BUCs Distributions/Reverse Unit Split |  |  |  |  |  |  |  |  | 1,177 |
Restricted units awarded |  |  |  |  |  |  |  |  | 96,321 |
Restricted units forfeited |  |  |  |  |  |  |  |  | (5,437) |
Restricted unit compensation expense | 1,531,622 |  |  | 15,316 |  | 1,516,306 |  |  |  |
BUCs surrendered to pay tax withholding on vested restricted units | (456,127) |  |  |  |  | (456,127) |  |  |  |
BUCs surrendered to pay tax withholding on vested restricted units, Units |  |  |  |  |  |  |  |  | (22,296) |
Unrealized gains (losses) on securities | (69,426,546) |  |  | (694,265) |  | (68,732,281) |  |  |  | (69,426,546)
Unrealized gains (losses) on bond purchase commitments | (865,475) |  |  | (8,655) |  | (856,820) |  |  |  | (865,475)
Balance at Dec. 31, 2022 | 323,955,517 |  |  | 285,571 |  | 323,669,946 |  |  |  | 43,748,239
Partners' Capital Account, Units at Dec. 31, 2022 |  |  |  |  |  |  |  |  | 23,011,517 |
Cumulative effect of accounting change (Note 2) | (5,949,000) |  |  | (59,490) |  | (5,889,510) |  |  |  |
Distributions paid or accrued: |  |  |  |  |  |  |  |  |  |
Regular distribution | (20,210,697) |  |  | (202,107) |  | (20,008,590) |  |  |  |
Distribution of income (Note 23) |  | (12,992,591) | (4,020,578) |  | (3,248,148) |  | (9,744,443) | (4,020,578) |  |
Cash paid in lieu of fractional BUCs | (6,202) |  |  |  |  | (6,202) |  |  |  |
Net income allocable to Partners | 51,143,118 |  |  | 3,589,447 |  | 47,553,671 |  |  |  |
Rounding of BUCs related to BUCs Distributions/Reverse Unit Split |  |  |  |  |  |  |  |  | (377) |
Restricted units awarded |  |  |  |  |  |  |  |  | 105,274 |
Restricted unit compensation expense | 2,013,736 |  |  | 20,137 |  | 1,993,599 |  |  |  |
BUCs surrendered to pay tax withholding on vested restricted units | (483,255) |  |  |  |  | (483,255) |  |  |  |
BUCs surrendered to pay tax withholding on vested restricted units, Units |  |  |  |  |  |  |  |  | (28,146) |
Unrealized gains (losses) on securities | 15,757,801 |  |  | 157,578 |  | 15,600,223 |  |  |  | 15,757,801
Unrealized gains (losses) on bond purchase commitments | 98,859 |  |  | 989 |  | 97,870 |  |  |  | 98,859
Balance at Dec. 31, 2023 | 349,306,708 |  |  | 543,977 |  | 348,762,731 |  |  |  | 59,604,899
Partners' Capital Account, Units at Dec. 31, 2023 |  |  |  |  |  |  |  |  | 23,088,268 |
Distributions paid or accrued: |  |  |  |  |  |  |  |  |  |
Regular distribution | (33,720,936) |  |  | (337,209) |  | (33,383,727) |  |  |  |
Distribution of income (Note 23) |  | $ (1,239,431) | $ (117,844) |  | $ (309,858) |  | $ (929,573) | $ (117,844) |  |
Cash paid in lieu of fractional BUCs | (3,468) |  |  |  |  | (3,468) |  |  |  |
Net income allocable to Partners | 18,331,662 |  |  | 479,602 |  | 17,852,060 |  |  |  |
Rounding of BUCs related to BUCs Distributions/Reverse Unit Split |  |  |  |  |  |  |  |  | (209) |
Sale of BUCs, net of issuance costs, Value | 1,493,952 |  |  |  |  | 1,493,952 |  |  |  |
Sale of BUCs, net of issuance costs, Units |  |  |  |  |  |  |  |  | 92,802 |
Restricted units awarded |  |  |  |  |  |  |  |  | 109,581 |
Restricted unit compensation expense | 1,891,633 |  |  | 18,916 |  | 1,872,717 |  |  |  |
BUCs surrendered to pay tax withholding on vested restricted units | (234,911) |  |  |  |  | (234,911) |  |  |  |
BUCs surrendered to pay tax withholding on vested restricted units, Units |  |  |  |  |  |  |  |  | (19,757) |
Unrealized gains (losses) on securities | (27,262,557) |  |  | (272,626) |  | (26,989,931) |  |  |  | (27,262,557)
Unrealized gains (losses) on bond purchase commitments | (197,788) |  |  | (1,978) |  | (195,810) |  |  |  | (197,788)
Reclassification of gain on sale of mortgage revenue bond to net income | (2,220,254) |  |  | (22,203) |  | (2,198,051) |  |  |  | (2,220,254)
Balance at Dec. 31, 2024 | $ 306,026,766 |  |  | $ 98,621 |  | $ 305,928,145 |  |  |  | $ 29,924,300
Partners' Capital Account, Units at Dec. 31, 2024 |  |  |  |  |  |  |  |  | 23,270,685 |

X
- Definition Cash paid in lieu of fractional beneficial unit certificates. + References No definition available. + Details
Name: | ghi_CashPaidInLieuOfFractionalBeneficialUnitCertificates
Namespace Prefix: | ghi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Cumulative effect of accounting change. + References No definition available. + Details
Name: | ghi_CumulativeEffectOfAccountingChange
Namespace Prefix: | ghi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Incentive distribution distribution per year income loss. + References No definition available. + Details
Name: | ghi_IncentiveDistributionDistributionPerYearIncomeLoss
Namespace Prefix: | ghi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of Net Income (Loss) attributable to common stockholders noncontrolling interest. + References No definition available. + Details
Name: | ghi_NetIncomeLossAttributableToCommonStockholdersAndNoncontrollingInterestBasic
Namespace Prefix: | ghi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Other comprehensive income unrealized holding gain loss on securities. + References No definition available. + Details
Name: | ghi_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecurities
Namespace Prefix: | ghi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Partners Capital Reverse Unit Split. + References No definition available. + Details
Name: | ghi_PartnersCapitalReverseUnitSplit
Namespace Prefix: | ghi_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Reclassification of gain on sale of mortgage revenue bond to net income. + References No definition available. + Details
Name: | ghi_ReclassificationOfGainOnSaleOfMortgageRevenueBondToNetIncome
Namespace Prefix: | ghi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount, after tax and before adjustment, of unrealized holding gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Excludes unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-9 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 10A -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-10A Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-11 + Details
Name: | us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Total distributions to each class of partners (i.e., general, limited and preferred partners). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 5 -Subparagraph (SAB Topic 4.F) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480008/505-10-S99-5 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1 + Details
Name: | us-gaap_PartnersCapitalAccountDistributions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_PartnersCapitalAccountDistributionsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Value of units that were previously issued and then were repurchased and classified as treasury units. This element represents the monetary value of these units which were reissued during the period. + References No definition available. + Details
Name: | us-gaap_PartnersCapitalAccountTreasuryUnitsReissued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of increase (decrease) in partners' capital account for unit-based payment arrangement issued by partnership. Partner includes, but is not limited to, general, limited and preferred partners. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 5 -Subparagraph (SAB Topic 4.F) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480008/505-10-S99-5 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1 + Details
Name: | us-gaap_PartnersCapitalAccountUnitBasedCompensation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The number of each class of partnership units outstanding at the balance sheet date. Units represent shares of ownership of the general, limited, and preferred partners. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 5 -Subparagraph (SAB Topic 4.F) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480008/505-10-S99-5 + Details
Name: | us-gaap_PartnersCapitalAccountUnits
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Units that were previously issued and then were repurchased and classified as treasury units. This element represents the number of these units which were reissued during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1 + Details
Name: | us-gaap_PartnersCapitalAccountUnitsTreasuryUnitsReissued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of partners' capital (deficit), including portions attributable to both the parent and noncontrolling interests. Excludes temporary equity and is sometimes called permanent equity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1 + Details
Name: | us-gaap_PartnersCapitalIncludingPortionAttributableToNoncontrollingInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Value, after value of shares used to satisfy grantee's tax withholding obligation for award under share-based payment arrangement, of restricted shares issued. Excludes cash used to satisfy grantee's tax withholding obligation. + References No definition available. + Details
Name: | us-gaap_RestrictedStockValueSharesIssuedNetOfTaxWithholdings
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Number of shares used to settle grantee's tax withholding obligation for award under share-based payment arrangement. + References No definition available. + Details
Name: | us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares issued during the period related to Restricted Stock Awards, net of any shares forfeited. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -SubTopic 10 -Topic 505 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares that have been repurchased and retired during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -SubTopic 10 -Topic 505 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1 + Details
Name: | us-gaap_StockRepurchasedAndRetiredDuringPeriodShares
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration