00010591420falseFYP5YP6Mhttp://fasb.org/us-gaap/2023#InterestIncomeExpenseNethttp://fasb.org/us-gaap/2023#InterestIncomeExpenseNethttp://fasb.org/us-gaap/2023#OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTaxhttp://fasb.org/us-gaap/2023#InterestIncomeExpenseNethttp://fasb.org/us-gaap/2023#InterestIncomeExpenseNethttp://fasb.org/us-gaap/2023#OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax0001059142ghi:SanAntonioTexasMemberus-gaap:SecondMortgageMemberghi:AvistarPortfolio2Member2022-01-012022-12-310001059142ghi:PropertyLoansMemberghi:OspreyVillageMember2023-12-310001059142ghi:HeritageSquareMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberstpr:TX2023-12-310001059142ghi:MortgageRevenueBondsMemberghi:BrawleyCAMemberghi:OcotilloSpringsSeriesA1Member2023-07-012023-07-310001059142ghi:OaksAtGeorgetownMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberstpr:TX2023-12-310001059142ghi:DecaturAngleMemberghi:FortWorthTexasMember2022-01-012022-12-310001059142ghi:SeriesAPreferredUnitsIssuedOnDecemberTwoThousandSixteenMember2022-01-012022-12-310001059142ghi:PalmsAtPremierParkApartmentsMemberghi:ColumbiaSouthCarolinaMember2022-01-012022-12-310001059142ghi:Live929ApartmentsMemberghi:MortgageRevenueBondsMemberghi:BaltimoreMdMemberghi:TwoThousandFourteenFirstMortgageMember2022-01-012022-01-310001059142us-gaap:SifmaMunicipalSwapRateMemberghi:LosAngelesCaliforniaMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMemberghi:HopeOnAvalonMember2022-12-310001059142ghi:BarclaysCapitalIncMemberghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:PoppyGroveIiiGilMember2023-01-012023-12-310001059142us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMemberus-gaap:AvailableforsaleSecuritiesMember2023-12-310001059142ghi:FullertonCaliforniaMemberghi:CourtyardMemberus-gaap:FirstMortgageMember2023-01-012023-12-310001059142ghi:BoerneTexasMemberghi:VantageAtFairOaksMemberus-gaap:InvestmentsMember2023-01-012023-12-310001059142ghi:MortgageRevenueBondsMember2022-12-310001059142ghi:MeadowValleyMemberghi:GarfieldCharterTownshipMiMember2022-01-012022-12-310001059142stpr:CAghi:MortgageRevenueBondsMemberghi:ResidencyAtEntrepreneurSeriesJFiveMember2023-12-310001059142us-gaap:EstimateOfFairValueFairValueDisclosureMember2022-12-310001059142ghi:WillowRunMemberghi:ColumbiaSouthCarolinaMember2023-01-012023-12-310001059142ghi:BarclaysBankPLCMember2023-12-310001059142ghi:MizuhoCapitalMarketsElevenMember2023-01-012023-12-310001059142ghi:MurfreesboroTNMemberghi:VantageAtMurfreesboroMember2023-02-012023-02-280001059142ghi:SanAntonioTexasMemberus-gaap:SecondMortgageMemberghi:AvistarPortfolio2Member2023-01-012023-12-3100010591422023-10-012023-12-310001059142ghi:VillageAtRiversEdgeMemberghi:ColumbiaSouthCarolinaMember2023-12-310001059142ghi:MortgageRevenueBondsHeldInTrustMemberghi:FifteenWestApartmentsMemberstpr:TX2023-12-310001059142us-gaap:GeneralPartnerMemberghi:ReimbursableSalariesAndBenefitsMember2023-12-310001059142country:AZghi:MortgageRevenueBondsMemberghi:TheSaffordMember2023-12-310001059142ghi:SanAntonioTexasMemberghi:HeightsAtHeightsAtFiveHundredFifteenMemberus-gaap:FirstMortgageMember2022-01-012022-12-310001059142ghi:MontclairApartmentsMemberus-gaap:FirstMortgageMemberghi:LemooreCaliforniaMember2023-12-310001059142ghi:VantageAtHuttoMemberus-gaap:InvestmentsMemberghi:HuttoTXMember2022-12-310001059142ghi:JacksonMsMemberghi:JacksonManorApartmentsMember2023-12-310001059142ghi:HilltopAtSignalHillsMemberghi:SeniorConstructionFinancingMember2022-01-012022-12-310001059142srt:MaximumMemberus-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember2023-12-310001059142ghi:VariableNotesMemberghi:FortyOnColonyMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2023-12-310001059142ghi:SanAntonioTexasMemberghi:AvistarPortfolioMemberus-gaap:SecondMortgageMember2023-12-310001059142ghi:UnfundedCommitmentsMember2023-01-012023-12-310001059142ghi:TaxableGovernmentalIssuerLoanMemberghi:TOBTrustMember2023-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:ResidencyAtTheEntrepreneurMrbsMemberghi:MizuhoCapitalMarketsLLCMember2022-01-012022-12-310001059142ghi:SanAntonioTexasMemberghi:AvistarOnBoulevardMemberus-gaap:FirstMortgageMember2022-01-012022-12-310001059142ghi:SanAntonioTexasMemberghi:AvistarAtParkwayMemberus-gaap:FirstMortgageMember2023-01-012023-12-310001059142ghi:TheSaffordMemberghi:MaranaArizonaMember2023-01-012023-12-310001059142country:SCghi:TheIvyApartmentsMemberghi:MortgageRevenueBondsHeldInTrustMember2023-12-310001059142ghi:WestsideVillageMarketMemberghi:ShafterCaliforniaMember2022-12-310001059142ghi:TOBAndTermABTrustsSecuritizationMember2022-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:CentennialCrossingsGovernmentalIssuerLoanMemberghi:MizuhoCapitalMarketsLLCMember2022-12-310001059142ghi:RenaissanceMemberghi:BatonRougeLouisianaMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:OcotilloSpringsSeriesATMember2023-07-310001059142us-gaap:OperatingSegmentsMemberghi:MfPropertiesSegmentMember2022-12-310001059142ghi:ConcordAtWilliamcrestMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberstpr:TX2022-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:AvistarAtCopperfieldSeriesAMemberghi:MizuhoCapitalMarketsLLCMember2023-12-310001059142ghi:WillowPlaceApartmentsSupplementalMemberghi:TOBTrustMemberus-gaap:SubsequentEventMember2024-02-012024-02-220001059142stpr:CAghi:FortyOnColonySeriesPMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:VariableNotesMemberghi:ResidencyAtEmpireMrbsMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2023-12-310001059142ghi:SanAntonioTexasMemberghi:EsperanzaAtPaloAltoMember2022-01-012022-12-310001059142ghi:TOBTrustMemberghi:OspreyVillageMemberus-gaap:SubsequentEventMember2024-02-012024-02-220001059142ghi:VineyardGardensMemberghi:OxnardCaliforniaMemberus-gaap:FirstMortgageMember2022-01-012022-12-310001059142ghi:MeadowValleyMemberus-gaap:FirstMortgageMemberghi:MortgageRevenueBondsAndTaxableMortgageRevenueBondsMember2023-12-310001059142us-gaap:InterestRateCapMember2022-01-012022-12-310001059142ghi:VantageAtOConnorMemberghi:SanAntonioTexasMember2023-05-012023-05-310001059142country:AZghi:TheSaffordMemberghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2023-12-310001059142ghi:SeriesAPreferredUnitsIssuedOnMarchTwoThousandSeventeenMember2022-01-012022-12-310001059142ghi:OasisAtTwinLakesMemberghi:SeniorConstructionFinancingMember2022-01-012022-12-310001059142ghi:VariableNotesMemberghi:MontevistaSeriesAMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2023-12-310001059142us-gaap:FairValueInputsLevel3Memberghi:BondPurchaseCommitmentMember2023-01-012023-12-310001059142ghi:VineyardGardensMemberghi:OxnardCaliforniaMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:FortyOnColonyMemberghi:SeriesPMortgageMemberghi:LaMesaCaliforniaMember2023-12-310001059142ghi:BurbankCaliforniaMemberghi:ResidencyAtEmpireBbOneMember2022-12-310001059142ghi:ElkGroveCaMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMemberghi:PoppyGroveIIMember2023-01-012023-12-310001059142us-gaap:OperatingSegmentsMemberghi:MfPropertiesSegmentMemberghi:NetResultFromDerivativeTransactionsMember2023-01-012023-12-310001059142ghi:LakewoodCaliforniaMemberghi:SeasonsLakewoodMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:CapitalUnitsRestrictedAndUnrestrictedMember2022-01-012022-12-310001059142us-gaap:RestrictedStockUnitsRSUMember2022-12-310001059142ghi:TwoThousandAndTwentyTwoBeneficialUnitCertificatesDistributionMemberghi:BeneficialUnitCertificatesMember2022-09-152022-09-150001059142ghi:HilltopAtSignalHillsGilMember2023-08-012023-08-310001059142srt:MaximumMemberghi:GovernmentalIssuerLoansMemberghi:PoppyGroveThreeMember2023-12-310001059142ghi:OcotilloSpringsMemberghi:BrawleyCAMemberus-gaap:FirstMortgageMember2022-01-012022-12-310001059142ghi:HopeOnBroadwayMemberghi:GovernmentalIssuerLoansMember2023-01-012023-12-310001059142ghi:InterestRateThroughJulyThirtyFirstTwoThousandTwentyThreeMemberghi:FixedMFortyFiveMember2022-12-310001059142ghi:FreestoneLaderaMemberghi:LaderaTxMemberus-gaap:InvestmentsMember2023-12-310001059142ghi:WindsorShoresApartmentsMemberghi:ColumbiaSouthCarolinaMember2023-01-012023-12-310001059142ghi:FreestoneGreenvilleMember2023-12-310001059142ghi:ParkAtViettiMemberghi:ThirdMortgageMemberghi:SpartanburgSouthCarolinaMemberghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2022-12-310001059142ghi:SummerhillMemberghi:BakersfieldCaliforniaMemberus-gaap:FirstMortgageMember2022-01-012022-12-310001059142ghi:SanAntonioTexasMemberus-gaap:SecondMortgageMemberghi:AvistarAtParkwayMember2022-12-310001059142ghi:PoppyGroveOneMemberghi:TOBTrustMember2022-01-012022-12-310001059142stpr:CAghi:MortgageRevenueBondsHeldInTrustMemberghi:HardenRanchMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:TierTwoDistributionMemberus-gaap:GeneralPartnerMember2023-01-012023-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMemberghi:HopeOnBroadwayGilMember2022-12-310001059142ghi:TwoThousandAndTwentyTwoBeneficialUnitCertificatesDistributionMemberghi:BeneficialUnitCertificatesMember2022-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMemberghi:HopeOnAvalonGilMember2022-01-012022-12-310001059142ghi:SummerhillMemberstpr:CAghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:GreensPropertyMemberghi:MortgageRevenueBondsMemberstpr:NCus-gaap:SecondMortgageMember2022-12-310001059142ghi:PoppyGroveIIIMemberghi:GovernmentalIssuerLoansMember2022-12-310001059142ghi:TrustTwentyTwentyXFTwoThousandNineHundredAndEightMemberghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2022-12-310001059142ghi:LosAngelesCaliforniaMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMemberghi:HopeOnAvalonMember2023-01-012023-12-310001059142ghi:BarclaysBankPlcOneMember2023-01-012023-12-310001059142ghi:HeritageSquareMemberus-gaap:FirstMortgageMemberghi:EdinburgTexasMember2022-01-012022-12-310001059142ghi:GovernmentalIssuerLoansMemberghi:ScharbauerFlatsApartmentsMember2023-01-012023-12-310001059142ghi:CameronParkCaliforniaMemberghi:GlenviewApartmentsMemberus-gaap:FirstMortgageMember2022-01-012022-12-310001059142ghi:MortgageRevenueBondsMemberghi:ParkAtSondrioMemberghi:Series2022BMortgageMember2022-01-012022-12-310001059142ghi:BurbankCaliforniaMemberghi:ResidencyAtEmpireBbTwoMember2022-01-012022-12-310001059142us-gaap:FairValueInputsLevel3Memberghi:BondPurchaseCommitmentMember2021-12-310001059142ghi:WillowPlaceApartmentsMemberghi:SeniorConstructionFinancingMember2022-12-310001059142srt:MaximumMemberghi:GovernmentalIssuerLoansMemberghi:PoppyGroveThreeMember2022-12-310001059142ghi:TaxableMortgageRevenueBondsMember2023-12-310001059142ghi:SeriesJTMortgageMemberghi:MortgageRevenueBondsMemberghi:TheResidencyAtEntrepreneurMember2022-12-310001059142ghi:SandyCreekApartmentsMemberghi:SeniorConstructionFinancingMember2023-01-012023-12-310001059142us-gaap:GeneralPartnerMember2021-12-310001059142ghi:AnaheimAndWalnutMemberghi:BondPurchaseCommitmentMember2023-12-310001059142ghi:MortgageRevenueBondsHeldInTrustMemberghi:HeightsAtHeightsAtFiveHundredFifteenMemberus-gaap:FirstMortgageMemberstpr:TX2022-12-310001059142ghi:SycamoreWalkMemberghi:BakersfieldCaliforniaMemberus-gaap:FirstMortgageMember2022-01-012022-12-310001059142us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:OspreyVillageMemberghi:SeniorConstructionFinancingMember2022-12-310001059142ghi:MizuhoCapitalMarketsFiveMember2023-12-310001059142us-gaap:GeneralAndAdministrativeExpenseMemberus-gaap:RestrictedStockUnitsRSUMember2023-01-012023-12-310001059142srt:MaximumMemberghi:RealEstateBuildingsMember2023-12-310001059142us-gaap:SecuredDebtMember2023-12-310001059142ghi:BurbankCaliforniaMemberghi:ResidencyAtEmpireBbOneMember2023-01-012023-12-310001059142ghi:VillageAtRiversEdgeMemberghi:ColumbiaSouthCarolinaMember2022-01-012022-12-310001059142ghi:VantageAtCoventryMemberghi:OmahaNebraskaMemberus-gaap:InvestmentsMember2023-01-012023-12-310001059142srt:MaximumMemberus-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember2023-01-012023-12-310001059142ghi:SanAntonioTexasMemberghi:CrossingAtOneThousandFourHundredFifteenMemberus-gaap:FirstMortgageMember2023-12-310001059142us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:MagnoliaHeightsMemberghi:SeniorConstructionFinancingMember2022-12-310001059142ghi:AlbuquerqueNewMexicoMemberus-gaap:FirstMortgageMemberghi:SilverMoonMember2023-01-012023-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMemberghi:TheSaffordMember2023-12-310001059142ghi:MortgageRevenueBondsMemberghi:DurhamNorthCarolinaMemberghi:GatewayVillageMember2022-12-310001059142ghi:RaymondJamesBankOneMember2023-01-012023-12-310001059142ghi:BarclaysCapitalIncMemberghi:VariableNotesMemberghi:VillagePointMemberghi:TOBTrustsSecuritizationMember2023-01-012023-12-310001059142ghi:Live929ApartmentsMember2022-12-310001059142us-gaap:AccountingStandardsUpdate201613Member2023-12-310001059142ghi:MortgageRevenueBondsMemberghi:BrawleyCAMemberghi:OcotilloSpringsSeriesA1Member2023-07-310001059142us-gaap:InterestRateCapMember2023-01-012023-12-310001059142ghi:ResidencyAtTheEntrepreneurJOneMemberghi:LosAngelesCaliforniaMember2023-01-012023-12-310001059142ghi:SanAntonioTexasMemberus-gaap:FirstMortgageMemberghi:AvistarOnHillsMember2022-12-310001059142ghi:TaxableMortgageRevenueBondsMemberghi:EffectiveRateMaximumMember2023-12-310001059142ghi:SanAntonioTexasMemberghi:EsperanzaAtPaloAltoMember2022-12-310001059142ghi:SeriesAPreferredUnitsAndSeriesA1PreferredUnitsMember2023-12-310001059142ghi:BulverdeTXMemberghi:VantageAtBulverdeMember2022-01-012022-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMemberghi:HopeOnAvalonGilMember2022-12-310001059142ghi:MorganStanleyBankMemberghi:VillageAtAvalonMemberghi:TermTobTrustSecuritizationMember2022-01-012022-12-310001059142us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:MagnoliaHeightsMemberghi:CovingtonGeorgiaMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2022-12-310001059142ghi:VancouverWashingtonMemberghi:FifteenWestApartmentsMemberus-gaap:FirstMortgageMember2022-01-012022-12-310001059142ghi:MizuhoCapitalMarketsThreeMembersrt:MaximumMember2023-12-310001059142ghi:VillageAtHanfordSquareMemberghi:SeriesHMortgageMemberghi:HanfordCaliforniaMember2023-01-012023-12-310001059142ghi:AvistarPortfolioMembersrt:OtherPropertyMember2023-01-012023-12-310001059142ghi:TheResidencyAtEmpireMemberghi:SeriesBbThreeMortgageMember2023-12-310001059142ghi:ComptonCaMemberghi:LutheranGardensMember2023-12-310001059142us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMemberghi:VantageAtStoneCreekMemberghi:OmahaNebraskaMember2023-12-310001059142ghi:TheParkAtSondrioSeriesTwoThousandTwentyTwoAMemberghi:GreenvilleSouthCarolinaMember2022-01-012022-12-310001059142ghi:MidlandTexasMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMemberghi:ScharbauerFlatsApartmentsMember2022-12-310001059142ghi:VariableNotesMemberghi:Live929Memberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2022-12-3100010591422023-01-012023-03-310001059142ghi:SaintPaulMinnesotaMemberghi:HilltopAtSignalHillsMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2022-01-012022-12-310001059142ghi:MurfreesboroTNMemberghi:VantageAtMurfreesboroMember2023-01-012023-12-310001059142ghi:ElkGroveCaMemberghi:PoppyGroveIMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2022-01-012022-12-310001059142us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:WillowPlaceApartmentsMemberghi:McDonoughGeorgiaMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2023-12-310001059142ghi:AffordableMultifamilyMortgageRevenueBondInvestmentsSegmentMemberus-gaap:OperatingSegmentsMember2022-12-310001059142ghi:BarclaysCapitalIncMemberghi:VariableNotesMemberghi:PoppyGroveIiGilMemberghi:TOBTrustsSecuritizationMember2022-12-310001059142ghi:AffordableMultifamilyMortgageRevenueBondInvestmentsSegmentMemberus-gaap:OperatingSegmentsMemberus-gaap:InterestExpenseMember2022-01-012022-12-310001059142stpr:CAghi:MortgageRevenueBondsMemberghi:ResidencyAtTheEntrepreneurMemberghi:SeriesJThreeMortgageMember2022-12-310001059142ghi:OspreyVillageMember2022-12-310001059142ghi:OasisAtTwinLakesGilMember2023-06-012023-06-300001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MontecitoAtWilliamsRanchSeriesAMemberghi:MizuhoCapitalMarketsLLCMember2023-01-012023-12-310001059142ghi:ComptonCaMemberghi:LutheranGardensMember2023-01-012023-12-310001059142ghi:GreensPropertyMemberstpr:NCghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:MortgageRevenueBondsMemberghi:EffectiveRateMaximumMember2022-12-310001059142ghi:VillagePointMemberghi:MortgageRevenueBondsHeldInTrustMemberstpr:NJ2023-12-310001059142ghi:ElkGroveCaMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMemberghi:PoppyGroveIIMember2022-01-012022-12-310001059142ghi:The5050StudentHousingUNLMembersrt:OtherPropertyMember2023-01-012023-12-310001059142ghi:VallejoCaliforniaMemberghi:SolanoVistaMemberus-gaap:FirstMortgageMember2023-12-3100010591422022-10-012022-12-310001059142ghi:LovelandColoradoMemberus-gaap:InvestmentsMemberghi:VantageAtLovelandMember2023-12-310001059142ghi:AvistarOnBoulevardMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberstpr:TX2022-12-310001059142ghi:TierTwoDistributionMember2023-01-012023-12-310001059142ghi:TheSuitesOnPaseoMfPropertyMember2023-12-310001059142ghi:OspreyVillageSupplementalMemberus-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:TOBTrustMemberus-gaap:SubsequentEventMember2024-02-012024-02-220001059142ghi:TwoThousandAndTwentyThreeBeneficialUnitCertificatesDistributionMemberghi:BeneficialUnitCertificatesMember2023-09-132023-09-130001059142ghi:ScharbauerFlatsApartmentsMember2023-01-012023-12-310001059142ghi:MortgageRevenueBondsMemberghi:SeriesBbTMortgageMemberghi:ResidencyAtEmpireBbTwoMember2022-12-3100010591422023-01-012023-01-310001059142ghi:TwoThousandAndTwentyTwoBeneficialUnitCertificatesDistributionMemberghi:BeneficialUnitCertificatesMember2022-12-190001059142stpr:CAghi:LasPalmasTwoMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMember2022-12-310001059142stpr:CAghi:OcotilloSpringsMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:LimitedPartnerRestrictedAndUnrestrictedMember2021-12-310001059142ghi:GreensPropertyMemberstpr:NCghi:MortgageRevenueBondsHeldInTrustMember2022-12-310001059142us-gaap:MortgagesMemberghi:VantageAtSanMarcosMemberus-gaap:RealEstateMember2023-01-012023-12-310001059142ghi:HardenRanchMemberus-gaap:FirstMortgageMemberghi:SalinasCaliforniaMember2023-12-310001059142country:SCghi:CompanionAtThornHillApartmentsMemberghi:MortgageRevenueBondsHeldInTrustMember2022-12-310001059142ghi:TOBTrustMemberghi:OspreyVillageMemberus-gaap:SubsequentEventMember2024-02-220001059142ghi:SeriesAPreferredUnitsIssuedOnOctoberTwoThousandSeventeenMember2023-01-012023-12-310001059142ghi:MortgageRevenueBondsMemberghi:WindsorShoresApartmentsSeriesBMember2023-01-012023-12-310001059142ghi:HarmonyCourtBakersfieldMemberghi:BakersfieldCaliforniaMemberus-gaap:FirstMortgageMember2022-12-310001059142country:SCghi:CompanionAtThornHillApartmentsMemberghi:MortgageRevenueBondsHeldInTrustMember2023-12-310001059142us-gaap:FirstMortgageMemberghi:SantaFeApartmentsMemberghi:HesperiaCaliforniaMember2023-12-310001059142ghi:SeriesAPreferredUnitsIssuedOnOctoberTwoThousandSeventeenMember2022-12-310001059142ghi:GreensHoldCoMember2023-01-012023-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:TheParkAtSondrioSeriesTwoThousandTwentyTwoAMemberghi:MizuhoCapitalMarketsLLCMember2023-12-310001059142ghi:BarclaysCapitalIncMemberghi:VariableNotesMemberghi:PoppyGroveIiGilMemberghi:TOBTrustsSecuritizationMember2023-01-012023-12-310001059142us-gaap:SecuredDebtMemberghi:BankersTrustAcquisitionMember2023-01-012023-12-310001059142ghi:MortgageRevenueBondAndTaxableMortgageRevenueBondInvestmentsMember2022-12-310001059142ghi:GreensPropertyMemberghi:MortgageRevenueBondsMemberghi:DurhamNorthCarolinaMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:BoerneTexasMemberghi:VantageAtFairOaksMemberus-gaap:InvestmentsMember2022-12-310001059142ghi:ResidencyAtEmpireBbThreeMemberghi:BurbankCaliforniaMember2023-12-310001059142ghi:DecaturAngleMemberghi:FortWorthTexasMember2023-01-012023-12-310001059142ghi:MortgageRevenueBondsMemberus-gaap:SecondMortgageMemberghi:AvistarIn09Memberstpr:TX2023-12-310001059142ghi:SanAntonioTexasMemberghi:HeightsAtHeightsAtFiveHundredFifteenMemberus-gaap:FirstMortgageMember2023-01-012023-12-310001059142ghi:MortgageRevenueBondsMemberghi:CrossCreekMemberghi:BeaufortSouthCarolinaMember2022-01-012022-12-310001059142stpr:CAghi:VillageAtHanfordSquareMemberghi:SeriesHMortgageMemberghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2023-01-012023-12-310001059142us-gaap:SecuredDebtMemberghi:BankUnitedNAAndBankersTrustCompanyMember2023-12-310001059142ghi:MortgageRevenueBondsMemberghi:BrawleyCAMemberghi:OcotilloSpringsSeriesAMember2023-07-012023-07-310001059142ghi:ConcordAtGulfgateMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberstpr:TX2022-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:TheParkAtSondrioSeriesTwoThousandTwentyTwoAMemberghi:MizuhoCapitalMarketsLLCMember2022-01-012022-12-310001059142ghi:LasPalmasTwoMemberghi:CoachellaCaliforniaMemberus-gaap:FirstMortgageMember2023-01-012023-12-310001059142ghi:SanAntonioTexasMemberghi:AvistarAtCrestMemberus-gaap:FirstMortgageMember2023-01-012023-12-310001059142ghi:TierOneDistributionMemberus-gaap:LimitedPartnerMember2023-12-310001059142ghi:CrossCreekPropertyMember2022-08-012022-08-310001059142ghi:AvistarAtParkwayMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberstpr:TX2023-12-310001059142stpr:CAghi:ResidencyAtTheEntrepreneurJThreeMemberghi:MortgageRevenueBondsHeldInTrustMember2023-12-310001059142ghi:TheIvyApartmentsMemberghi:GreenvilleSouthCarolinaMember2023-12-310001059142ghi:ResidencyAtTheMayerMemberghi:HollywoodCaMemberus-gaap:FirstMortgageMember2023-12-310001059142us-gaap:AccumulatedOtherComprehensiveIncomeMember2023-12-310001059142ghi:MortgageRevenueBondsMemberghi:RunnymedeMemberstpr:TX2023-12-310001059142ghi:TheSaffordMemberghi:MaranaArizonaMember2023-12-310001059142ghi:SanAntonioTexasMemberghi:AvistarOnBoulevardMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:TheResidencyAtMayerMemberghi:SeriesATMortgageMemberghi:MortgageRevenueBondsAndTaxableMortgageRevenueBondsMember2023-12-310001059142us-gaap:FairValueInputsLevel3Member2023-01-012023-12-310001059142ghi:TwoThousandAndTwentyTwoBeneficialUnitCertificatesDistributionMemberghi:BeneficialUnitCertificatesMember2022-09-150001059142ghi:MortgageRevenueBondsMemberghi:EffectiveRateMinimumMember2022-12-310001059142ghi:AlbuquerqueNewMexicoMemberghi:VillageAtAvalonMember2022-12-310001059142ghi:RestrictedUnitholdersMember2022-01-012022-12-310001059142ghi:SeasonsSanJuanCapistranoMemberghi:SanJuanCapistranoCaliforniaMemberus-gaap:FirstMortgageMember2023-12-310001059142stpr:CAghi:MortgageRevenueBondsHeldInTrustMemberghi:CourtyardMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:PropertyLoansMemberus-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:WillowPlaceApartmentsMember2023-12-310001059142ghi:LosAngelesCaliforniaMemberghi:ResidencyAtTheEntrepreneurJTwoMember2022-12-310001059142ghi:SouthparkMemberghi:AustinTexasMember2022-01-012022-12-310001059142ghi:OmahaNebraskaMemberghi:LandHeldForDevelopmentMember2023-01-012023-01-310001059142ghi:TaxableGovernmentalIssuerLoansMemberghi:PoppyGroveOneMember2023-01-012023-12-310001059142ghi:MeadowValleyMemberghi:GarfieldCharterTownshipMiMember2023-01-012023-12-310001059142us-gaap:InvestmentsMember2022-12-310001059142stpr:CAghi:MortgageRevenueBondsHeldInTrustMemberghi:LutheranGardensMember2022-12-310001059142ghi:VariableNotesMemberghi:MontevistaSeriesAMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2023-01-012023-12-310001059142ghi:MindenNvMemberghi:ValageSeniorLivingCarsonValleyMember2023-12-310001059142ghi:FreestoneLaderaMember2023-12-310001059142ghi:GovernmentalIssuerLoansMemberghi:CentennialCrossingsMember2023-01-012023-12-310001059142ghi:LimitedPartnerRestrictedAndUnrestrictedMember2022-01-012022-12-310001059142ghi:MagnoliaHeightsMemberghi:SeniorConstructionFinancingMember2022-01-012022-12-310001059142stpr:SC2023-12-310001059142ghi:SaintPaulMinnesotaMemberghi:HilltopAtSignalHillsMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2022-12-310001059142ghi:WaukeganIllinoisMemberghi:BrookstoneMember2022-12-310001059142us-gaap:SecuredDebtMemberghi:VariableNotesMember2022-12-310001059142ghi:GovernmentalIssuerLoanMember2022-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:TrustTwentyTwentyOneXfTwoThousandNineHundredAndTwentySixMemberghi:MizuhoCapitalMarketsLLCMember2023-01-012023-12-310001059142ghi:OcotilloSpringsMemberghi:BrawleyCAMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:OhioPropertiesMember2023-01-012023-12-310001059142ghi:SoLaImpactOpportunityZoneFundMember2022-12-310001059142us-gaap:GeneralPartnerMember2022-01-012022-12-310001059142ghi:CameronParkCaliforniaMemberghi:GlenviewApartmentsMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:SanAntonioTexasMemberghi:AvistarAtCrestMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:ConcordAtGulfgateMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberstpr:TX2023-12-310001059142ghi:SeriesJTMortgageMemberghi:TheResidencyAtEntrepreneurMemberghi:MortgageRevenueBondsAndTaxableMortgageRevenueBondsMember2023-01-012023-12-310001059142us-gaap:SecuredDebtMembersrt:MinimumMember2021-06-012021-06-300001059142us-gaap:GeneralPartnerMember2022-01-012022-12-310001059142us-gaap:SecuredDebtMember2021-06-300001059142ghi:TheParkAtSondrioSeriesTwoThousandTwentyTwoAMemberghi:GreenvilleSouthCarolinaMember2023-12-310001059142ghi:BankersTrustNonOperatingMemberus-gaap:SecuredDebtMember2021-08-012021-08-310001059142ghi:ResidencyAtTheMayerMemberghi:HollywoodCaMemberus-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberus-gaap:FirstMortgageMember2022-12-310001059142stpr:NMghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberghi:SilverMoonMember2022-12-310001059142us-gaap:FairValueInputsLevel3Memberghi:MortgageRevenueBondsIncludingBondsHeldInTrustMember2021-12-310001059142ghi:DallasTexasMemberghi:BrutonApartmentsMember2023-01-012023-12-310001059142ghi:TwoThousandAndTwentyThreeBeneficialUnitCertificatesDistributionMemberghi:BeneficialUnitCertificatesMember2023-12-130001059142us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMembersrt:ScenarioForecastMemberghi:SeniorConstructionFinancingMember2025-02-010001059142ghi:SanAntonioTexasMemberghi:CrossingAtOneThousandFourHundredFifteenMemberus-gaap:FirstMortgageMember2023-01-012023-12-310001059142ghi:MortgageRevenueBondsMemberus-gaap:SecondMortgageMemberghi:AvistarAtOaksMemberstpr:TX2023-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:ResidencyAtTheEntrepreneurMrbsMemberghi:MizuhoCapitalMarketsLLCMember2023-01-012023-12-310001059142ghi:TwoThousandAndTwentyThreeBeneficialUnitCertificatesDistributionMemberghi:BeneficialUnitCertificatesMember2023-12-310001059142ghi:JacksonMsMemberghi:JacksonManorApartmentsMember2023-01-012023-12-310001059142us-gaap:RelatedPartyMember2023-12-310001059142ghi:GreensOfPineGlenMember2023-01-012023-12-310001059142ghi:LiborMemberghi:ScharbauerFlatsApartmentsMemberghi:SeniorConstructionFinancingMember2022-12-310001059142ghi:VantageAtPowdersvilleMemberghi:PowdersvilleSCMember2023-01-012023-12-310001059142ghi:SanAntonioTexasMemberghi:AvistarOnBoulevardMemberus-gaap:FirstMortgageMember2023-01-012023-12-310001059142ghi:BryanTexasMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMemberghi:SandyCreekApartmentsMember2023-01-012023-12-310001059142ghi:KissimmeeFloridaMemberus-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMemberghi:OspreyVillageMember2023-12-310001059142ghi:BeneficialUnitCertificatesMember2022-01-012022-12-310001059142ghi:SanDiegoCaliforniaMemberghi:CCBASeniorGardenApartmentsMember2022-01-012022-12-310001059142ghi:Live929ApartmentsMemberstpr:MDghi:MortgageRevenueBondsMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:TheResidencyAtMayerMemberghi:SeriesATMortgageMemberghi:MortgageRevenueBondsAndTaxableMortgageRevenueBondsMember2023-01-012023-12-310001059142stpr:CAghi:SycamoreWalkMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:VillageAtHanfordSquareMemberghi:SeriesHMortgageMemberghi:HanfordCaliforniaMember2023-12-310001059142us-gaap:FairValueInputsLevel3Memberghi:BondPurchaseCommitmentMember2022-01-012022-12-310001059142ghi:PropertyLoansMember2023-12-310001059142us-gaap:SecuredDebtMemberghi:BankersTrustAcquisitionMember2022-01-012022-12-310001059142ghi:BarclaysBankPLCMember2022-12-310001059142us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:WillowPlaceApartmentsMemberghi:SeniorConstructionFinancingMember2022-12-310001059142ghi:FreestoneCrestaBellaMember2022-11-300001059142ghi:MizuhoCapitalMarketsFiveMember2022-01-012022-12-310001059142stpr:SC2022-12-310001059142ghi:ElkGroveCaMemberghi:PoppyGroveIIIMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2023-01-012023-12-310001059142us-gaap:OperatingSegmentsMemberghi:MfPropertiesSegmentMember2023-12-310001059142ghi:AnaheimAndWalnutMemberghi:BondPurchaseCommitmentMember2023-01-012023-12-310001059142ghi:ResidencyAtTheEntrepreneurJOneMemberghi:LosAngelesCaliforniaMember2022-01-012022-12-310001059142ghi:MortgageRevenueBondMemberghi:JacksonManorApartmentsMember2023-11-300001059142us-gaap:GeneralPartnerMember2022-12-310001059142ghi:ThirdMortgageMembercountry:SCghi:TheParkAtSondrioMemberghi:MortgageRevenueBondsHeldInTrustMember2023-12-310001059142ghi:ResidencyAtEmpireMemberghi:SeriesBBTwoMemberghi:BurbankCaliforniaMemberghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2022-12-310001059142ghi:VariableNotesMemberghi:AvistarAtWilcrestSeriesAMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2022-01-012022-12-310001059142us-gaap:OperatingSegmentsMemberghi:MfPropertiesSegmentMember2022-01-012022-12-310001059142us-gaap:InterestRateSwapMember2023-01-012023-12-310001059142ghi:FourtyOnColonyMemberghi:SeriesPTMemberghi:MortgageRevenueBondsAndTaxableMortgageRevenueBondsMember2023-12-310001059142ghi:MortgageRevenueBondsHeldInTrustMemberghi:CopperGateApartmentsMemberstpr:IN2023-12-310001059142ghi:TierThreeDistributionMember2023-01-012023-12-310001059142ghi:OmahaNebraskaMemberghi:VantageAtStoneCreekMemberus-gaap:InvestmentsMember2022-12-310001059142us-gaap:GeneralPartnerMemberghi:ProfessionalFeesAndExpensesMember2022-12-310001059142stpr:CAghi:ResidencyAtTheEntrepreneurMemberghi:SeriesJFourMortgageMemberghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2022-12-310001059142ghi:SanAntonioTexasMemberghi:FreestoneAtCrestaBellaMemberus-gaap:InvestmentsMember2023-01-012023-12-310001059142ghi:AlbuquerqueNewMexicoMemberghi:VillageAtAvalonMember2023-01-012023-12-310001059142srt:MaximumMemberghi:MizuhoCapitalMarketsThreeMember2022-12-310001059142ghi:MortgageRevenueBondsMemberghi:WindsorShoresApartmentsSeriesBMember2023-12-310001059142srt:MaximumMember2023-01-012023-12-310001059142us-gaap:SecuredDebtMember2023-01-012023-12-310001059142ghi:ScharbauerFlatsApartmentsMemberghi:SeniorConstructionFinancingMember2022-12-310001059142us-gaap:AccumulatedOtherComprehensiveIncomeMember2021-12-310001059142stpr:CAghi:ResidencyAtTheEntrepreneurMemberghi:SeriesJTwoMortgageMemberghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2022-12-310001059142us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:TOBTrustMemberus-gaap:SubsequentEventMemberghi:OspreyVillageMember2024-02-012024-02-220001059142us-gaap:FairValueInputsLevel3Memberghi:TaxableGovernmentalIssuerLoanMember2022-12-310001059142ghi:BeneficialUnitCertificatesMemberghi:AtTheMarketOfferingMember2021-07-310001059142srt:MaximumMemberghi:MizuhoCapitalMarketsThirteenMember2023-12-310001059142ghi:GovernmentalIssuerLoansMember2023-01-012023-12-310001059142ghi:MortgageRevenueBondsMemberus-gaap:SecondMortgageMemberghi:AvistarOnBoulevardMemberstpr:TX2022-12-310001059142ghi:SanAntonioTexasMemberghi:AvistarPortfolio2Memberus-gaap:SecondMortgageMember2023-12-310001059142ghi:SeasonsSanJuanCapistranoMemberghi:SanJuanCapistranoCaliforniaMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:PropertyLoansMemberghi:NonperformingMember2023-12-310001059142ghi:SoLaImpactOpportunityZoneFundMemberghi:MezzanineFinancingMember2022-12-310001059142us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:WillowPlaceApartmentsMemberghi:McDonoughGeorgiaMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2022-12-310001059142ghi:ProvisionCenter20141Memberghi:KnoxvilleTennesseeMember2023-01-012023-12-310001059142ghi:OmahaNebraskaMemberghi:VantageAtStoneCreekMemberus-gaap:InvestmentsMember2023-01-012023-12-310001059142ghi:GreensPropertyMemberghi:MortgageRevenueBondsMemberghi:DurhamNorthCarolinaMemberus-gaap:FirstMortgageMember2023-01-012023-12-310001059142ghi:WestsideVillageMarketMemberghi:ShafterCaliforniaMember2023-12-310001059142ghi:MortgageRevenueBondsMemberus-gaap:SecondMortgageMemberghi:CrescentVillageWillowBendAndPostwoodsMemberghi:OhioPropertiesMember2022-01-012022-12-310001059142ghi:AlbuquerqueNewMexicoMemberghi:VillageAtAvalonMember2023-12-310001059142ghi:SanAntonioTexasMemberus-gaap:FirstMortgageMemberghi:AvistarAtOaksMember2022-01-012022-12-310001059142ghi:MeadowValleyMemberus-gaap:FirstMortgageMemberghi:MortgageRevenueBondsAndTaxableMortgageRevenueBondsMember2023-01-012023-12-310001059142ghi:PerformingMemberghi:GovernmentalIssuerLoansMember2023-12-310001059142ghi:JacksonMsMemberghi:JacksonManorApartmentsMember2022-01-012022-12-310001059142us-gaap:SecuredDebtMemberghi:LiborMemberghi:BankUnitedGeneralMember2022-01-012022-12-310001059142ghi:PalmsAtPremierParkApartmentsMemberghi:ColumbiaSouthCarolinaMember2022-12-310001059142us-gaap:SeriesBPreferredStockMemberus-gaap:SubsequentEventMember2024-02-012024-02-220001059142ghi:ElkGroveCaMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMemberghi:PoppyGroveIIMember2022-12-310001059142ghi:OaksAtGeorgetownMemberghi:GeorgetownTexasMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:BankersTrustNonOperatingMember2021-08-310001059142ghi:Live929ApartmentsMemberghi:MortgageRevenueBondsMemberghi:Series2022BMortgageMember2022-12-310001059142ghi:NetResultFromDerivativeTransactionsMember2022-01-012022-12-310001059142us-gaap:OperatingSegmentsMemberghi:SeniorsAndSkilledNursingMortgageRevenueBondInvestmentsSegmentMember2023-12-310001059142ghi:BoerneTexasMemberghi:VantageAtFairOaksMemberus-gaap:InvestmentsMember2023-12-310001059142ghi:WillowRunMembercountry:SCghi:MortgageRevenueBondsHeldInTrustMember2023-12-310001059142ghi:FirstMortgageOneMemberghi:OcotilloSpringsMemberghi:BrawleyCAMember2023-12-310001059142ghi:SeriesJFourMortgageMemberghi:TheResidencyAtEntrepreneurMemberghi:MortgageRevenueBondsAndTaxableMortgageRevenueBondsMember2023-01-012023-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MontecitoAtWilliamsRanchSeriesAMemberghi:MizuhoCapitalMarketsLLCMember2022-01-012022-12-310001059142ghi:MindenNvMemberghi:ValageSeniorLivingCarsonValleyMemberus-gaap:InvestmentsMember2023-12-310001059142us-gaap:InterestRateFloorMembersrt:MinimumMemberghi:GovernmentalIssuerLoansMember2022-12-310001059142ghi:TaxableMortgageRevenueBondsMemberghi:TOBTrustMember2023-12-310001059142ghi:LosAngelesCaliforniaMemberghi:ResidencyAtTheEntrepreneurJThreeMember2022-12-310001059142ghi:ScharbauerFlatsApartmentsOneMember2023-01-012023-12-310001059142ghi:ColumbiaGardensMemberghi:ColumbiaSouthCarolinaMember2022-12-310001059142stpr:CAghi:MortgageRevenueBondsMemberghi:OcotilloSpringsSeriesAMember2023-12-310001059142ghi:LasPalmasTwoMemberghi:CoachellaCaliforniaMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:WaukeganIllinoisMemberghi:BrookstoneMember2022-01-012022-12-310001059142ghi:GovernmentalIssuerLoansMemberghi:PoppyGroveIIMember2022-12-310001059142ghi:TOBTrustMemberghi:PoppyGroveIIMember2022-01-012022-12-310001059142ghi:InterestRateFromAugustFirstTwoThousandTwentyThreeMemberghi:FixedMFortyFiveMember2022-12-310001059142ghi:OasisAtTwinLakesMemberghi:LiborMemberghi:SeniorConstructionFinancingMember2022-12-310001059142stpr:CAghi:MortgageRevenueBondsHeldInTrustMemberghi:SeasonsAtSimiValleyMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:OspreyVillageGilMemberghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2022-01-012022-12-310001059142ghi:SeriesAPreferredUnitsIssuedOnMarchTwoThousandSeventeenMember2023-01-012023-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMemberghi:OcotilloSpringsSeriesAMember2022-01-012022-12-310001059142ghi:FullertonCaliforniaMemberghi:CourtyardMemberus-gaap:FirstMortgageMember2022-01-012022-12-3100010591422023-01-010001059142us-gaap:LimitedPartnerMemberghi:TierTwoDistributionMember2023-12-310001059142stpr:CAghi:ResidencyAtTheEntrepreneurMemberghi:MortgageRevenueBondsMember2022-12-310001059142us-gaap:InterestRateFloorMembersrt:MinimumMember2023-12-310001059142ghi:TheSuitesOnPaseoMfPropertyMember2023-12-012023-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMemberghi:AvistarAtWoodHollowSeriesAMember2022-01-012022-12-310001059142country:SCghi:MortgageRevenueBondsHeldInTrustMemberghi:ColumbiaGardensMember2023-12-310001059142ghi:FixedMThirtyThreeMemberghi:TaxExemptBondSecuritizationMember2023-01-012023-12-3100010591422023-06-300001059142us-gaap:GeneralPartnerMemberghi:InsuranceMember2023-12-310001059142ghi:MortgageRevenueBondsHeldInTrustMemberghi:CopperGateApartmentsMemberstpr:IN2022-12-310001059142ghi:TomballTXMemberghi:VantageAtTomballMemberus-gaap:InvestmentsMember2022-12-310001059142ghi:MortgageRevenueBondsMemberus-gaap:SecondMortgageMemberghi:AvistarAtCrestMemberstpr:TX2022-12-310001059142ghi:MizuhoCapitalMarketsLLCMember2022-01-012022-12-310001059142ghi:VariableNotesMemberghi:FortyOnColonyMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2023-01-012023-12-310001059142ghi:Live929ApartmentsMemberghi:MortgageRevenueBondsMemberghi:BaltimoreMdMemberghi:TwoThousandFourteenFirstMortgageMember2022-01-310001059142ghi:JointVentureInvestmentsMemberghi:VantageAtSanMarcosMember2023-12-310001059142ghi:TaxExemptSecuritiesOtherThanMRBsAndOtherInvestmentsMember2023-12-310001059142us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMemberghi:TaxableMortgageRevenueBondsMember2023-12-310001059142us-gaap:RestrictedStockUnitsRSUMember2023-01-012023-12-310001059142ghi:BeneficialUnitCertificatesMember2023-12-310001059142ghi:PropertyLoansMemberghi:PerformingMember2023-12-310001059142us-gaap:SifmaMunicipalSwapRateMemberghi:LosAngelesCaliforniaMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMemberghi:HopeOnAvalonMember2023-12-310001059142us-gaap:OperatingSegmentsMemberghi:SeniorsAndSkilledNursingMortgageRevenueBondInvestmentsSegmentMember2022-01-012022-12-310001059142ghi:GreensPropertyMembersrt:OtherPropertyMember2022-12-310001059142ghi:CapitalUnitsRestrictedAndUnrestrictedMember2022-12-310001059142us-gaap:SeriesAPreferredStockMember2022-01-012022-12-310001059142ghi:WestsideVillageMarketMemberghi:ShafterCaliforniaMember2022-01-012022-12-310001059142ghi:MortgageRevenueBondsHeldInTrustMemberghi:AvistarAtWoodHollowMemberus-gaap:FirstMortgageMemberstpr:TX2022-12-310001059142us-gaap:SeriesAPreferredStockMember2023-08-012023-08-310001059142ghi:WillowPlaceApartmentsMemberghi:TOBTrustMemberus-gaap:SubsequentEventMember2024-02-012024-02-220001059142ghi:AustinTexasMemberus-gaap:FirstMortgageMemberghi:AvistarAtWoodHollowMember2023-12-310001059142ghi:LosAngelesCaliforniaMemberghi:ResidencyAtTheEntrepreneurJFiveMember2023-12-310001059142ghi:PoppyGroveIIIMemberghi:TOBTrustMember2022-01-012022-12-310001059142ghi:PalmsAtPremierParkMembercountry:SCghi:MortgageRevenueBondsHeldInTrustMember2022-12-310001059142ghi:MizuhoCapitalMarketsTwelveMember2023-12-310001059142stpr:CAghi:MortgageRevenueBondsHeldInTrustMemberghi:ResidencyAtTheEntrepreneurJTwoMember2022-12-310001059142ghi:SeriesAPreferredUnitsIssuedOnOctoberTwoThousandSeventeenMember2022-01-012022-12-310001059142us-gaap:SifmaMunicipalSwapRateMemberghi:MidlandTexasMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMemberghi:ScharbauerFlatsApartmentsMember2022-12-310001059142us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMemberus-gaap:EquityMethodInvestmentsMember2023-12-310001059142ghi:ElkGroveCaMemberghi:PoppyGroveIMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2023-12-310001059142ghi:VillageAtHanfordSquareMemberghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2023-12-310001059142ghi:TheParkAtSondrioSeriesTwoThousandTwentyTwoAMemberghi:GreenvilleSouthCarolinaMember2022-12-310001059142ghi:MortgageRevenueBondsMemberghi:FortyOnColonyMemberghi:SeriesPTMortgageMember2023-01-012023-12-310001059142country:SCghi:MortgageRevenueBondsHeldInTrustMemberghi:VillageAtRiversEdgeMember2023-12-310001059142us-gaap:OperatingSegmentsMemberghi:MarketRateJointVentureInvestmentsMember2023-01-012023-12-310001059142us-gaap:InterestExpenseMember2023-01-012023-12-310001059142ghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberghi:HeightsAtHeightsAtFiveHundredFifteenMemberstpr:TX2023-12-310001059142stpr:CAghi:MortgageRevenueBondsMemberghi:CCBASeniorGardenApartmentsMember2022-12-310001059142ghi:HoustonTexasMemberus-gaap:FirstMortgageMemberghi:AvistarAtWilcrestMember2023-12-310001059142ghi:LafayetteIndianaMemberghi:CopperGateApartmentsMember2023-01-012023-12-310001059142ghi:OasisAtTwinLakesMemberus-gaap:SifmaMunicipalSwapRateMemberghi:RosevilleMNMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2022-12-310001059142ghi:VantageAtConroeMemberus-gaap:InvestmentsMemberghi:ConroeTXMember2023-01-012023-12-310001059142ghi:MizuhoCapitalMarketsEightMember2023-12-310001059142ghi:GreensPropertyMemberghi:DurhamNorthCarolinaMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:KissimmeeFloridaMemberus-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMemberghi:OspreyVillageMember2022-12-310001059142ghi:SeasonsLakewoodMemberstpr:CAghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:OspreyVillageSupplementalAndWillowPlaceApartmentsMembersrt:MinimumMember2023-12-310001059142ghi:KissimmeeFloridaMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMemberghi:OspreyVillageMember2022-12-310001059142ghi:The5050MfPropertyTifLoanMember2023-01-012023-12-3100010591422023-07-012023-09-300001059142ghi:DallasTexasMemberghi:BrutonApartmentsMember2023-12-310001059142us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:HilltopAtSignalHillsMemberghi:SeniorConstructionFinancingMember2022-12-310001059142ghi:RunnymedeMemberghi:AustinTexasMember2022-01-012022-12-310001059142ghi:MortgageRevenueBondsHeldInTrustMember2023-12-310001059142ghi:MortgageRevenueBondsMemberus-gaap:FairValueInputsLevel3Member2023-12-310001059142ghi:SanAntonioTexasMemberghi:AvistarPortfolio2Memberus-gaap:SecondMortgageMember2022-12-310001059142ghi:SeriesA1PreferredUnitsIssuedOnAprilTwoThousandTwentyTwoMember2023-12-310001059142ghi:The5050MfPropertyTifLoanMember2023-12-310001059142ghi:SeasonsSanJuanCapistranoMemberstpr:CAghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:SeriesA1PreferredUnitsIssuedOnJuneTwoThousandTwentyThreeMember2023-12-310001059142ghi:TaxableMortgageRevenueBondsMember2023-12-310001059142ghi:CentennialCrossingsMember2023-01-012023-12-310001059142us-gaap:RestrictedStockUnitsRSUMember2023-12-310001059142ghi:TierTwoDistributionMemberghi:LimitedPartnerRestrictedAndUnrestrictedMember2023-01-012023-12-310001059142us-gaap:OperatingSegmentsMemberghi:MarketRateJointVentureInvestmentsMemberus-gaap:InterestExpenseMember2023-01-012023-12-310001059142ghi:CameronParkCaliforniaMemberghi:GlenviewApartmentsMemberus-gaap:FirstMortgageMember2022-12-310001059142us-gaap:FairValueInputsLevel3Memberghi:MortgageRevenueBondsIncludingBondsHeldInTrustMember2022-01-012022-12-310001059142ghi:MemphisTennesseeMemberghi:ArborsAtHickoryRidgeMember2023-01-012023-12-310001059142ghi:SouthparkMemberghi:AustinTexasMember2023-12-310001059142ghi:VantageAtHuttoMemberus-gaap:InvestmentsMemberghi:HuttoTXMember2023-01-012023-12-310001059142ghi:BarclaysBankPlcOneMember2023-12-310001059142us-gaap:RestrictedStockUnitsRSUMember2022-01-012022-12-310001059142ghi:HandselMorganVillageApartmentsMemberstpr:GAghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2023-12-310001059142ghi:TaxableGovernmentalIssuerLoanMemberghi:TOBTrustMember2022-12-310001059142ghi:ResidencyAtEmpireMemberghi:SeriesBBThreeMemberghi:BurbankCaliforniaMemberghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2022-12-310001059142ghi:BondPurchaseCommitmentMember2023-12-310001059142ghi:Live929ApartmentsMember2022-01-012022-01-310001059142stpr:CAghi:ResidencyAtTheEntrepreneurMemberghi:MortgageRevenueBondsMember2023-12-310001059142ghi:SoLaImpactOpportunityZoneFundMemberghi:MezzanineFinancingMember2023-01-012023-12-310001059142ghi:JointVentureInvestmentsMember2023-12-310001059142stpr:CAghi:CCBASeniorGardenApartmentsMemberghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2022-12-310001059142ghi:MortgageRevenueBondsMemberghi:ProvisionCenter20141Memberstpr:TN2023-12-310001059142ghi:SeriesAPreferredUnitsIssuedOnMarchTwoThousandSixteenMember2022-01-012022-12-310001059142us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:MagnoliaHeightsMemberghi:SeniorConstructionFinancingMember2023-12-310001059142ghi:MizuhoCapitalMarketsOneMember2022-12-310001059142country:AZghi:TheSaffordMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:LindoPaseoLlcMember2023-12-310001059142ghi:SanAntonioTexasMemberus-gaap:FirstMortgageMemberghi:AvistarAtOaksMember2022-12-310001059142ghi:TheParkAtViettiSeriesTwoThousandTwentyTwoAMemberghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2023-01-012023-12-310001059142ghi:VariableNotesMemberghi:ScharbauerFlatsApartmentsGovernmentalIssuerLoanMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2022-12-310001059142ghi:BurbankCaliforniaMemberghi:ResidencyAtEmpireBbTwoMember2022-12-310001059142ghi:MckinneyFallsTexasMemberghi:VantageAtMckinneyFallsMemberus-gaap:InvestmentsMember2023-01-012023-12-310001059142ghi:LosAngelesCaliforniaMemberghi:HopeOnBroadwayMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2022-12-310001059142ghi:LegacyCommonsAtSignalHillsMemberghi:SeniorConstructionFinancingMember2023-12-310001059142stpr:CAghi:MortgageRevenueBondsMemberghi:ResidencyAtEmpireBbThreeMember2022-12-310001059142ghi:MizuhoCapitalMarketsThirteenMember2023-01-012023-12-310001059142ghi:AffordableMultifamilyMortgageRevenueBondInvestmentsSegmentMemberus-gaap:OperatingSegmentsMember2023-01-012023-12-310001059142us-gaap:TotalReturnSwapMember2023-01-012023-12-310001059142ghi:MizuhoCapitalMarketsThreeMember2022-12-310001059142ghi:MontevistaMemberus-gaap:FirstMortgageMemberghi:SanPabloCaliforniaMember2022-12-310001059142ghi:TwoThousandAndTwentyThreeBeneficialUnitCertificatesDistributionMemberghi:BeneficialUnitCertificatesMember2023-06-142023-06-140001059142ghi:MagnoliaHeightsMemberghi:CovingtonGeorgiaMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2022-01-012022-12-310001059142ghi:HoustonTexasMemberus-gaap:FirstMortgageMemberghi:AvistarAtWilcrestMember2023-01-012023-12-310001059142ghi:SeriesA1PreferredUnitsIssuedOnAprilTwoThousandTwentyTwoMember2022-12-310001059142ghi:TheParkAtViettiSeriesTwoThousandTwentyTwoAMemberghi:SpartanburgSouthCarolinaMember2023-12-310001059142ghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberstpr:TXghi:AvistarAtOaksMember2023-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:VineyardGardensSeriesAMemberghi:MizuhoCapitalMarketsLLCMember2023-12-310001059142stpr:CAghi:ResidencyAtTheEntrepreneurMemberghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMemberghi:SeriesJFiveMortgageMember2023-12-310001059142stpr:NMghi:MortgageRevenueBondsHeldInTrustMemberghi:SilverMoonMember2022-12-310001059142ghi:OasisAtTwinLakesMember2023-01-012023-12-310001059142ghi:TaxableMortgageRevenueBondsMember2023-12-310001059142stpr:CAghi:FortyOnColonyMemberghi:SeriesPMortgageMemberghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2023-01-012023-12-310001059142ghi:HoustonTexasMemberghi:ConcordAtLittleYorkMemberus-gaap:FirstMortgageMember2023-01-012023-12-310001059142ghi:MemphisTennesseeMemberghi:ArborsAtHickoryRidgeMember2023-12-310001059142ghi:TheResidencyAtEmpireMemberghi:SeriesBbFourMortgageMemberghi:MortgageRevenueBondsAndTaxableMortgageRevenueBondsMember2023-12-310001059142ghi:LosAngelesCaliforniaMemberghi:ResidencyAtTheEntrepreneurJThreeMember2022-01-012022-12-310001059142ghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2022-12-310001059142ghi:HilltopAtSignalHillsMemberghi:SeniorConstructionFinancingMember2022-12-310001059142ghi:OspreyVillageSupplementalMemberghi:SeniorConstructionFinancingMember2023-12-310001059142ghi:LegacyCommonsAtSignalHillsMemberghi:SeniorConstructionFinancingMember2022-01-012022-12-310001059142ghi:VantageAtCoventryMemberus-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMemberghi:OmahaNebraskaMember2023-12-310001059142ghi:TheIvyApartmentsMemberghi:GreenvilleSouthCarolinaMember2023-01-012023-12-310001059142ghi:JointVentureInvestmentsMemberghi:FreestoneGreeleyMember2023-12-310001059142ghi:ResidencyAtEmpireMemberghi:SeriesBBTwoMemberghi:BurbankCaliforniaMemberghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2022-01-012022-12-310001059142ghi:DecaturAngleMemberghi:MortgageRevenueBondsHeldInTrustMemberstpr:TX2023-12-310001059142ghi:Live929ApartmentsMemberghi:BaltimoreMarylandMemberus-gaap:FirstMortgageMember2023-01-012023-12-310001059142ghi:The5050StudentHousingUNLMember2022-12-310001059142ghi:ColumbiaGardensMemberghi:ColumbiaSouthCarolinaMember2023-12-310001059142us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:MagnoliaHeightsMemberghi:CovingtonGeorgiaMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2023-12-310001059142ghi:LegacyCommonsAtSignalHillsMemberus-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:SaintPaulMinnesotaMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2023-12-310001059142ghi:MidlandTexasMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMemberghi:ScharbauerFlatsApartmentsMember2022-01-012022-12-310001059142ghi:TheParkAtSondrioMembercountry:SCghi:MortgageRevenueBondsHeldInTrustMember2022-12-310001059142ghi:SouthparkMemberghi:AustinTexasMember2022-12-310001059142us-gaap:MortgagesMemberghi:VantageAtSanMarcosMemberus-gaap:RealEstateMember2022-12-310001059142ghi:FreestoneGreenvilleMemberus-gaap:InvestmentsMemberghi:GreenvilleTx1Member2023-12-310001059142ghi:ConcordAtLittleYorkMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberstpr:TX2023-12-310001059142us-gaap:FairValueInputsLevel2Memberus-gaap:SwapMember2023-12-310001059142ghi:SanAntonioTexasMemberus-gaap:FirstMortgageMemberghi:AvistarOnHillsMember2023-01-012023-12-310001059142us-gaap:GeneralPartnerMemberghi:ProfessionalFeesAndExpensesMember2023-12-310001059142ghi:VantageAtConroeMemberus-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMemberghi:ConroeTXMember2023-12-310001059142ghi:GreystoneManagerMemberus-gaap:RestrictedStockUnitsRSUMembersrt:MinimumMember2023-01-012023-12-310001059142ghi:BarclaysBankPLCMember2022-01-012022-12-310001059142us-gaap:SeriesAPreferredStockMember2023-01-012023-12-310001059142ghi:MortgageRevenueBondsHeldInTrustMember2022-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:VineyardGardensSeriesAMemberghi:MizuhoCapitalMarketsLLCMember2022-01-012022-12-310001059142ghi:MizuhoCapitalMarketsEightMember2023-01-012023-12-310001059142us-gaap:GeneralPartnerMember2022-12-310001059142us-gaap:SecuredDebtMemberghi:TebsFinancingsMemberghi:MizuhoAndBarclaysMember2020-01-012020-12-310001059142ghi:LafayetteIndianaMemberghi:CopperGateApartmentsMember2023-12-310001059142us-gaap:FairValueInputsLevel3Memberghi:MortgageRevenueBondsHeldInTrustMember2022-12-310001059142ghi:OspreyVillageMemberghi:SeniorConstructionFinancingMember2022-01-012022-12-310001059142ghi:SeniorsAndSkilledNursingMortgageRevenueBondInvestmentsSegmentMember2023-12-310001059142ghi:CapitalUnitsRestrictedAndUnrestrictedMember2023-12-310001059142ghi:HardenRanchMemberus-gaap:FirstMortgageMemberghi:SalinasCaliforniaMember2022-12-310001059142ghi:FreddieMacMemberghi:GovernmentalIssuerLoansMemberus-gaap:SubsequentEventMember2024-01-012024-01-310001059142ghi:VariableNotesMemberghi:VillageAtHanfordSquareMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2023-01-012023-12-310001059142ghi:WillowPlaceApartmentsMemberghi:TOBTrustMemberus-gaap:SubsequentEventMember2024-02-220001059142us-gaap:GeneralPartnerMemberghi:ConsultingAndTravelExpensesMember2022-12-310001059142ghi:VariableNotesMemberghi:TrustTwentyTwentyOneXfTwoThousandNineHundredAndTwentySixMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2022-01-012022-12-310001059142srt:MaximumMemberghi:SeniorConstructionFinancingMember2022-12-310001059142ghi:TheResidencyAtEmpireMemberghi:SeriesBbTMortgageMemberghi:MortgageRevenueBondsAndTaxableMortgageRevenueBondsMember2023-12-310001059142ghi:SanDiegoCaliforniaMemberghi:CCBASeniorGardenApartmentsMember2023-12-310001059142ghi:MizuhoCapitalMarketsTenMember2023-12-310001059142ghi:RestrictedUnitholdersMember2023-01-012023-12-310001059142ghi:Live929ApartmentsMemberghi:MortgageRevenueBondsMemberghi:Series2022BMortgageMember2022-01-012022-12-310001059142stpr:CAghi:SanVicenteMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:BakersfieldCaliforniaMemberghi:HarmonyCourtBakersfieldMemberus-gaap:FirstMortgageMember2023-01-012023-12-310001059142ghi:WillowPlaceApartmentsMemberghi:SeniorConstructionFinancingMember2023-01-012023-12-310001059142us-gaap:InterestExpenseMember2022-01-012022-12-310001059142ghi:BarclaysCapitalIncMemberghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:PoppyGroveIGilMember2022-01-012022-12-310001059142ghi:The5050MfPropertyMortgageMember2023-01-012023-12-310001059142us-gaap:OperatingSegmentsMemberghi:SeniorsAndSkilledNursingMortgageRevenueBondInvestmentsSegmentMemberus-gaap:InterestExpenseMember2023-01-012023-12-3100010591422023-01-012023-12-310001059142ghi:SeriesA1PreferredUnitsIssuedOnOctoberTwoThousandTwentyTwoMember2022-01-012022-12-310001059142ghi:VariableNotesMemberghi:MontevistaSeriesAMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2022-12-310001059142ghi:BarclaysCapitalIncMemberghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:PoppyGroveIiiGilMember2022-01-012022-12-310001059142ghi:CentennialCrossingsMemberghi:SeniorConstructionFinancingMember2022-12-310001059142ghi:GovernmentalIssuerLoanMember2023-12-310001059142us-gaap:FairValueInputsLevel3Memberghi:TaxableBondsMember2022-01-012022-12-310001059142ghi:MortgageRevenueBondsMemberghi:BrawleyCAMemberghi:OcotilloSpringsSeriesAMember2023-07-310001059142ghi:GreensPropertyMembersrt:OtherPropertyMember2023-01-012023-12-310001059142us-gaap:FairValueInputsLevel3Memberghi:BondPurchaseCommitmentMember2022-12-310001059142ghi:SanAntonioTexasMemberus-gaap:FirstMortgageMemberghi:AvistarOnHillsMember2022-01-012022-12-310001059142ghi:SandyCreekApartmentsMember2023-08-310001059142ghi:VillagePointApartmentsMemberghi:MonroeNewJerseyMember2023-01-012023-12-310001059142ghi:LegacyCommonsAtSignalHillsMemberghi:SeniorConstructionFinancingMember2023-01-012023-12-310001059142ghi:TheSaffordMemberghi:MortgageRevenueBondsAndTaxableMortgageRevenueBondsMember2023-01-012023-12-310001059142ghi:VineyardGardensMemberghi:OxnardCaliforniaMemberus-gaap:FirstMortgageMember2023-01-012023-12-310001059142ghi:SanMarcosTXMemberghi:VantageAtSanMarcosMember2023-12-310001059142ghi:MortgageRevenueBondsMemberus-gaap:SecondMortgageMemberghi:AvistarOnBoulevardMemberstpr:TX2023-12-310001059142ghi:TaxableMortgageRevenueBondsAndTaxableGovernmentalIssuerLoansMemberghi:TOBTrustMember2023-12-310001059142ghi:TwoThousandAndTwentyThreeBeneficialUnitCertificatesDistributionMemberghi:BeneficialUnitCertificatesMember2023-06-140001059142ghi:Live929ApartmentsMemberstpr:MDghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:SanAntonioTexasMemberus-gaap:SecondMortgageMemberghi:AvistarAtParkwayMember2023-01-012023-12-310001059142us-gaap:OperatingSegmentsMemberghi:MarketRateJointVentureInvestmentsMemberus-gaap:InterestExpenseMember2022-01-012022-12-310001059142ghi:MortgageRevenueBondAndTaxableMortgageRevenueBondInvestmentsMember2021-12-310001059142ghi:SanAntonioTexasMemberghi:EsperanzaAtPaloAltoMember2023-12-310001059142ghi:FixedMTwentyFourMemberghi:TaxExemptBondSecuritizationMember2022-01-012022-12-310001059142stpr:CAghi:SanVicenteMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:LegacyCommonsAtSignalHillsAndHilltopAtSignalHillsGilsMemberghi:MizuhoCapitalMarketsLLCMember2022-12-310001059142us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:WillowPlaceApartmentsMemberghi:TOBTrustMemberus-gaap:SubsequentEventMember2024-02-012024-02-220001059142ghi:MizuhoCapitalMarketsThreeMember2023-01-012023-12-310001059142ghi:WillowPlaceApartmentsMemberghi:McDonoughGeorgiaMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2022-12-310001059142srt:MinimumMemberghi:SeniorConstructionFinancingMember2022-12-310001059142ghi:ResidencyAtTheMayerMemberghi:HollywoodCaMemberus-gaap:FirstMortgageMember2022-01-012022-12-310001059142us-gaap:OperatingSegmentsMemberghi:MfPropertiesSegmentMember2023-01-012023-12-310001059142ghi:LosAngelesCaliforniaMemberghi:ResidencyAtTheEntrepreneurJTwoMember2023-12-310001059142ghi:GovernmentalIssuerLoanMemberus-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember2023-12-310001059142ghi:LosAngelesCaliforniaMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMemberghi:HopeOnAvalonMember2022-12-310001059142ghi:TaxableMortgageRevenueBondsMemberghi:TOBTrustMember2022-12-310001059142ghi:MontecitoAtWilliamsRanchApartmentsMemberus-gaap:FirstMortgageMemberghi:SalinasCaliforniaMember2023-12-310001059142ghi:LovelandColoradoMemberus-gaap:InvestmentsMemberghi:VantageAtLovelandMember2023-01-012023-12-310001059142us-gaap:OperatingSegmentsMemberghi:SeniorsAndSkilledNursingMortgageRevenueBondInvestmentsSegmentMemberus-gaap:InterestExpenseMember2022-01-012022-12-310001059142us-gaap:FairValueInputsLevel3Memberghi:MortgageRevenueBondsIncludingBondsHeldInTrustMember2023-01-012023-12-310001059142ghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberstpr:TXghi:AvistarOnHillsMember2022-12-310001059142ghi:ElkGroveCaMemberghi:PoppyGroveIIIMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2023-12-310001059142ghi:OhioPropertiesMember2023-12-310001059142ghi:DecaturAngleMemberghi:MortgageRevenueBondsHeldInTrustMemberstpr:TX2022-12-310001059142ghi:WillowRunMembercountry:SCghi:MortgageRevenueBondsHeldInTrustMember2022-12-310001059142us-gaap:SecuredDebtMemberghi:BankUnitedGeneralMember2022-12-310001059142us-gaap:SecuredDebtMemberghi:BankersTrustAcquisitionMember2022-12-310001059142ghi:HoustonTexasMemberghi:ConcordAtWilliamcrestMemberus-gaap:FirstMortgageMember2023-01-012023-12-310001059142ghi:TheResidencyAtEmpireMemberghi:SeriesBbFourMortgageMemberghi:MortgageRevenueBondsAndTaxableMortgageRevenueBondsMember2023-01-012023-12-310001059142srt:OtherPropertyMember2022-12-310001059142ghi:SouthparkMemberghi:MortgageRevenueBondsHeldInTrustMemberstpr:TX2022-12-310001059142ghi:ResidencyAtEmpireMemberghi:BurbankCaliforniaMemberghi:SeriesBBOneMemberghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2022-01-012022-12-310001059142ghi:MizuhoCapitalMarketsTwoMember2023-12-310001059142ghi:ResidencyAtEmpireBbThreeMemberghi:BurbankCaliforniaMember2022-01-012022-12-310001059142ghi:SeriesAPreferredUnitsIssuedOnMarchTwoThousandSeventeenMember2022-12-310001059142ghi:LosAngelesCaliforniaMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMemberghi:HopeOnAvalonMember2023-12-310001059142ghi:ElkGroveCaMemberghi:PoppyGroveIMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2023-01-012023-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMemberghi:JacksonManorApartmentsMember2023-01-012023-12-310001059142stpr:CAghi:VillageAtHanfordSquareMemberghi:SeriesHMortgageMemberghi:MortgageRevenueBondsHeldInTrustMember2023-12-310001059142ghi:VillageAtHanfordSquareMemberghi:MortgageRevenueBondsMemberghi:SeriesHTMortgageMember2023-01-012023-12-310001059142ghi:JointVentureInvestmentsMemberghi:VantageAtSanMarcosMember2023-01-012023-12-310001059142srt:ConsolidationEliminationsMember2022-12-310001059142us-gaap:InterestRateSwapMember2022-01-012022-12-310001059142ghi:GreensPropertyMemberghi:MortgageRevenueBondsMemberus-gaap:SecondMortgageMemberghi:DurhamNorthCarolinaMember2023-01-012023-12-310001059142stpr:CAghi:MortgageRevenueBondsHeldInTrustMemberghi:MontevistaMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:VariableNotesMemberghi:ScharbauerFlatsApartmentsGovernmentalIssuerLoanMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2022-01-012022-12-310001059142ghi:OspreyVillageMemberghi:SeniorConstructionFinancingMember2023-01-012023-12-310001059142us-gaap:GeneralPartnerMember2023-12-310001059142ghi:TheParkAtViettiMemberghi:ThirdMortgageMembercountry:SCghi:MortgageRevenueBondsHeldInTrustMember2023-12-310001059142ghi:TOBTrustsSecuritizationMember2022-12-310001059142us-gaap:AccountsPayableAndAccruedLiabilitiesMemberus-gaap:RelatedPartyMember2023-12-310001059142us-gaap:SecuredDebtMemberghi:BankUnitedGeneralMember2023-12-310001059142country:GAghi:MortgageRevenueBondsHeldInTrustMemberghi:MaryaliceCircleApartmentsMember2023-12-310001059142ghi:SanAntonioTexasMemberghi:AvistarIn09Memberus-gaap:FirstMortgageMember2023-12-310001059142ghi:SeriesA1PreferredUnitsMember2023-01-012023-12-310001059142ghi:WillowPlaceApartmentsMemberghi:McDonoughGeorgiaMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2022-01-012022-12-310001059142ghi:GreenfieldCaliforniaMemberghi:TylerParkTownhomesMember2022-12-310001059142ghi:WillowPlaceApartmentsMemberghi:McDonoughGeorgiaMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2023-12-310001059142ghi:ResidencyAtTheMayerMemberstpr:CAghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:VantageJVEquityInvestmentsMemberus-gaap:SubsequentEventMember2024-02-012024-02-220001059142ghi:BarclaysCapitalIncMemberghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:PoppyGroveIiiGilMember2023-12-3100010591422023-12-310001059142ghi:BufordGeorgiaMemberghi:HandselMorganVillageApartmentsMember2023-12-310001059142ghi:CompanionAtThornHillApartmentsMemberghi:LexingtonSouthCarolinaMember2022-01-012022-12-310001059142ghi:SoledadCaliforniaMemberghi:SanVicenteMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:AvistarAtWilcrestSeriesAMemberghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2023-12-310001059142ghi:PropertyLoansMember2022-12-310001059142country:SCghi:MortgageRevenueBondsHeldInTrustMemberghi:ColumbiaGardensMember2022-12-310001059142srt:MaximumMemberghi:GovernmentalIssuerLoansMemberghi:PoppyGroveOneMember2023-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:TheIvyApartmentsMemberghi:MizuhoCapitalMarketsLLCMember2023-01-012023-12-310001059142stpr:MIghi:MortgageRevenueBondsHeldInTrustMemberghi:MeadowValleyMember2023-12-310001059142ghi:TheSuitesOnPaseoMfPropertyMemberus-gaap:SecuredDebtMember2023-09-300001059142ghi:MagnoliaHeightsMemberghi:GovernmentalIssuerLoansMember2022-12-310001059142ghi:BarclaysCapitalIncMemberghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:TrustTwentyTwentyOneXfTwoThousandNineHundredAndFiftyThreeMember2022-01-012022-12-310001059142ghi:WaukeganIllinoisMemberghi:BrookstoneMember2023-01-012023-12-310001059142stpr:CAghi:MortgageRevenueBondsMemberghi:OcotilloSpringsSeriesA1Member2023-12-310001059142us-gaap:FairValueInputsLevel3Memberghi:BondPurchaseCommitmentMember2023-12-310001059142ghi:SanAntonioTexasMemberghi:AvistarAtCrestMemberus-gaap:FirstMortgageMember2022-01-012022-12-310001059142ghi:SanAntonioTexasMemberghi:AvistarAtParkwayMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:OaksAtGeorgetownMemberghi:GeorgetownTexasMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:HelotesTexasMemberus-gaap:InvestmentsMemberghi:VantageAtHelotesMember2023-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMemberghi:OasisAtTwinLakesGilMember2022-12-310001059142ghi:TaxableMortgageRevenueBondsMember2022-12-310001059142ghi:SanPabloCaliforniaMemberus-gaap:FirstMortgageMemberghi:MontevistaMember2023-12-310001059142ghi:HoustonTexasMemberghi:ConcordAtLittleYorkMemberus-gaap:FirstMortgageMember2022-01-012022-12-310001059142ghi:HandselMorganVillageApartmentsMemberstpr:GAghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2023-01-012023-12-310001059142us-gaap:GeneralPartnerMember2023-12-310001059142ghi:TrustTwentyTwentyXFTwoThousandNineHundredAndEightMemberghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2022-01-012022-12-310001059142ghi:VantageAtStoneCreekMemberghi:OmahaNebraskaMember2023-01-012023-12-310001059142us-gaap:FirstMortgageMemberghi:SanPabloCaliforniaMemberghi:MontevistaMember2023-01-012023-12-310001059142us-gaap:GeneralPartnerMember2023-01-012023-12-310001059142us-gaap:ResidentialMortgageMemberghi:AffordableMultifamilyMortgageRevenueBondInvestmentsSegmentMember2023-01-012023-12-3100010591422023-04-012023-06-300001059142ghi:ResidencyAtTheEntrepreneurJOneMemberghi:LosAngelesCaliforniaMember2023-12-310001059142us-gaap:FairValueInputsLevel3Memberghi:TaxableBondsMember2021-12-310001059142us-gaap:AccumulatedOtherComprehensiveIncomeMember2023-01-012023-12-310001059142ghi:ThirdMortgageMemberghi:ParkAtSondrioMemberghi:GreenvilleSouthCarolinaMemberghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2022-01-012022-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMemberghi:HopeOnAvalonGilMember2023-01-012023-12-310001059142ghi:FreestoneGreenvilleMemberghi:JointVentureInvestmentsMember2023-12-310001059142ghi:SimiValleyCaliforniaMemberghi:SeasonsAtSimiValleyMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:HoustonTexasMemberghi:AvistarAtCopperfieldMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:JointVentureInvestmentsMemberghi:VantageAtLovelandMember2023-07-012023-07-310001059142ghi:FixedMThirtyThreeMemberghi:TaxExemptBondSecuritizationMember2022-01-012022-12-310001059142ghi:Live929ApartmentsMembersrt:OtherPropertyMember2023-01-012023-12-310001059142ghi:Trust2024Xf3219Memberghi:TOBTrustMemberus-gaap:SubsequentEventMember2024-02-220001059142stpr:MDghi:Live929ApartmentsMemberghi:ThirdMortgageMemberghi:MortgageRevenueBondsHeldInTrustMember2023-12-310001059142ghi:VariableNotesMemberghi:MontevistaSeriesAMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2022-01-012022-12-310001059142ghi:TaxableMortgageRevenueBondsAndTaxableGovernmentalIssuerLoansMemberghi:TOBTrustMember2022-12-310001059142ghi:SeniorConstructionFinancingMember2023-12-310001059142ghi:GovernmentalIssuerLoansMember2022-12-310001059142ghi:AustinTexasMemberghi:AvistarAtWoodHollowMemberus-gaap:FirstMortgageMember2023-01-012023-12-310001059142ghi:TrustTwentyTwentyOneXFTwoThousandNineHundredAndThirtyNineMemberghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2023-12-310001059142ghi:HopeOnAvalonGilMemberus-gaap:SubsequentEventMember2024-01-012024-01-310001059142ghi:RaymondJamesBankOneMember2023-12-310001059142ghi:CrossCreekPropertyMember2022-09-012022-09-300001059142ghi:HelotesTexasMemberghi:VantageAtHelotesMemberus-gaap:InvestmentsMember2023-01-012023-12-310001059142stpr:NMghi:MortgageRevenueBondsHeldInTrustMember2022-12-310001059142ghi:SeasonsSanJuanCapistranoMemberstpr:CAghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:ColumbiaGardensMemberghi:ColumbiaSouthCarolinaMember2023-01-012023-12-310001059142stpr:CAghi:HarmonyCourtBakersfieldMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:VantageAtHuttoMemberus-gaap:InvestmentsMemberghi:HuttoTXMember2023-12-310001059142srt:MaximumMemberghi:GovernmentalIssuerLoansMemberghi:PoppyGroveOneMember2022-12-310001059142ghi:GovernmentalIssuerLoansAndTaxableGovernmentalIssuerLoansMemberghi:PoppyGroveThreeMember2023-12-310001059142ghi:SimiValleyCaliforniaMemberghi:SeasonsAtSimiValleyMemberus-gaap:FirstMortgageMember2022-01-012022-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMemberghi:SoLaImpactOpportunityZoneFundMember2023-12-310001059142ghi:SeriesAPreferredUnitsIssuedOnMarchTwoThousandSeventeenMember2023-12-310001059142ghi:OcotilloSpringsMemberghi:BrawleyCAMemberus-gaap:FirstMortgageMember2023-01-012023-12-310001059142ghi:MizuhoCapitalMarketsFourMember2022-01-012022-12-310001059142ghi:MortgageRevenueBondsMemberus-gaap:SecondMortgageMemberghi:AvistarAtParkwayMemberstpr:TX2022-12-310001059142ghi:Live929ApartmentsMemberghi:BaltimoreMarylandMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:MortgageRevenueBondAndTaxableMortgageRevenueBondInvestmentsMember2023-12-310001059142ghi:MortgageRevenueBondsMemberstpr:MIghi:MeadowValleyMember2022-12-310001059142ghi:BankersTrustNonOperatingMemberus-gaap:SecuredDebtMember2023-01-012023-12-310001059142ghi:BarclaysCapitalIncMemberghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:PoppyGroveIGilMember2022-12-310001059142ghi:PalmsAtPremierParkApartmentsMemberghi:ColumbiaSouthCarolinaMember2023-12-310001059142ghi:SoledadCaliforniaMemberghi:SanVicenteMemberus-gaap:FirstMortgageMember2022-01-012022-12-310001059142ghi:AvistarPortfolioMembersrt:OtherPropertyMember2022-12-310001059142ghi:MckinneyFallsTexasMemberghi:VantageAtMckinneyFallsMemberus-gaap:InvestmentsMember2023-12-310001059142ghi:GovernmentalIssuerLoansMember2023-12-310001059142ghi:FixedMFortyFiveMemberghi:TaxExemptBondSecuritizationMember2023-01-012023-12-310001059142us-gaap:FairValueInputsLevel3Memberghi:TaxableBondsMember2023-01-012023-12-310001059142ghi:FirstMortgageOneMemberghi:MortgageRevenueBondsMemberghi:CrescentVillageWillowBendAndPostwoodsMemberghi:OhioPropertiesMember2022-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMemberghi:JacksonManorApartmentsMember2023-12-310001059142ghi:VariableNotesMemberghi:SofrMemberghi:MizuhoAndBarclaysMember2023-01-012023-12-310001059142ghi:MizuhoCapitalMarketsOneMember2023-12-310001059142srt:MaximumMemberghi:MizuhoCapitalMarketsEightMember2023-12-310001059142ghi:CrossingAtOneThousandFourHundredFifteenMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberstpr:TX2022-12-310001059142us-gaap:OperatingSegmentsMemberghi:AffordableMultifamilyMortgageRevenueBondInvestmentsSegmentMember2023-12-310001059142ghi:TaxableGovernmentalIssuerLoansMember2023-01-012023-12-310001059142ghi:FixedMFortyFiveMemberghi:TaxExemptBondSecuritizationMember2022-01-012022-12-310001059142ghi:LegacyCommonsAtSignalHillsMemberghi:SeniorConstructionFinancingMember2022-12-310001059142ghi:OspreyVillageSupplementalMemberghi:SeniorConstructionFinancingMember2023-01-012023-12-3100010591422022-01-012022-03-310001059142ghi:WillowPlaceApartmentsSupplementalMemberus-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:SeniorConstructionFinancingMember2023-12-310001059142ghi:LosAngelesCaliforniaMemberghi:ResidencyAtTheEntrepreneurJTwoMember2023-01-012023-12-310001059142ghi:WillowPlaceApartmentsMemberghi:SeniorConstructionFinancingMember2023-12-310001059142us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:TheResidencyAtMayerMemberghi:SeriesATMortgageMemberghi:MortgageRevenueBondsAndTaxableMortgageRevenueBondsMember2023-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:CentennialCrossingsGovernmentalIssuerLoanMemberghi:MizuhoCapitalMarketsLLCMember2022-01-012022-12-310001059142ghi:BurbankCaliforniaMemberghi:ResidencyAtEmpireBbOneMember2022-01-012022-12-310001059142ghi:HilltopAtSignalHillsMemberghi:GovernmentalIssuerLoansMember2023-01-012023-12-310001059142ghi:UnfundedCommitmentsMemberghi:PerformingMember2023-12-310001059142ghi:BondPurchaseCommitmentMember2023-12-310001059142ghi:AlbuquerqueNewMexicoMemberus-gaap:FirstMortgageMemberghi:SilverMoonMember2023-12-310001059142stpr:CA2022-12-310001059142ghi:LegacyCommonsAtSignalHillsMemberghi:SaintPaulMinnesotaMemberus-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2022-12-310001059142ghi:LafayetteIndianaMemberghi:CopperGateApartmentsMember2022-01-012022-12-310001059142ghi:The5050MfPropertyMortgageMember2023-12-310001059142us-gaap:FairValueInputsLevel3Memberghi:TaxableGovernmentalIssuerLoanMember2023-12-310001059142ghi:SouthparkMemberghi:MortgageRevenueBondsMemberstpr:TX2023-12-3100010591422022-04-012022-06-300001059142ghi:HardenRanchMemberus-gaap:FirstMortgageMemberghi:SalinasCaliforniaMember2023-01-012023-12-310001059142ghi:SeasonsLakewoodMemberstpr:CAghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:SanAntonioTexasMemberus-gaap:FirstMortgageMemberghi:AvistarAtOaksMember2023-01-012023-12-310001059142ghi:TheResidencyAtEmpireMemberghi:SeriesBbThreeMortgageMember2023-01-012023-12-310001059142ghi:WillowPlaceApartmentsSupplementalMemberghi:McDonoughGeorgiaMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2023-01-012023-12-310001059142us-gaap:SecuredDebtMemberghi:BankersTrustAcquisitionMemberus-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember2022-01-012022-12-310001059142us-gaap:FairValueInputsLevel3Memberus-gaap:DerivativeMember2022-12-310001059142ghi:SeriesAPreferredUnitsIssuedOnAugustTwoThousandSeventeenMember2022-12-310001059142ghi:MortgageRevenueBondsMemberghi:LynnhavenApartmentsMemberghi:DurhamNorthCarolinaMember2022-12-310001059142us-gaap:OperatingSegmentsMemberghi:NetResultFromDerivativeTransactionsMemberghi:SeniorsAndSkilledNursingMortgageRevenueBondInvestmentsSegmentMember2023-01-012023-12-310001059142us-gaap:FairValueInputsLevel3Memberghi:TaxableBondsMember2022-12-310001059142ghi:TheParkAtViettiSeriesTwoThousandTwentyTwoAMemberghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2022-12-310001059142ghi:SeriesA1PreferredUnitsIssuedOnOctoberTwoThousandTwentyTwoMember2023-12-310001059142ghi:VantageJVEquityInvestmentsMemberus-gaap:SubsequentEventMember2024-01-012024-01-310001059142ghi:MortgageRevenueBondMemberghi:OcotilloSpringsSeriesAMember2023-07-310001059142ghi:MemphisTennesseeMemberghi:ArborsAtHickoryRidgeMember2022-01-012022-12-310001059142ghi:PropertyLoansMemberus-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:OspreyVillageMember2023-12-310001059142ghi:TierTwoDistributionMemberghi:LimitedPartnerRestrictedAndUnrestrictedMember2022-01-012022-12-310001059142ghi:BakersfieldCaliforniaMemberghi:HarmonyCourtBakersfieldMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:DallasTexasMemberghi:BrutonApartmentsMember2022-12-310001059142ghi:GreensPropertyMemberghi:MortgageRevenueBondsMemberstpr:NC2022-12-310001059142ghi:AvistarIn09Memberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberstpr:TX2022-12-310001059142us-gaap:CarryingReportedAmountFairValueDisclosureMember2022-12-310001059142us-gaap:SecuredDebtMemberus-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember2022-12-310001059142ghi:VantageAtBulverdeMemberghi:BulverdeTXMember2022-01-012022-12-310001059142ghi:CompanionAtThornHillApartmentsMemberghi:LexingtonSouthCarolinaMember2023-01-012023-12-310001059142us-gaap:DerivativeMember2023-12-310001059142stpr:CAghi:MortgageRevenueBondsMemberghi:ResidencyAtEmpireBbOneMember2022-12-310001059142ghi:ResidencyAtTheEntrepreneurJOneMemberstpr:CAghi:MortgageRevenueBondsHeldInTrustMember2022-12-310001059142us-gaap:SecuredDebtMemberghi:BankUnitedNAAndBankersTrustCompanyMember2021-06-300001059142ghi:HeritageSquareMemberus-gaap:FirstMortgageMemberghi:EdinburgTexasMember2023-01-012023-12-310001059142ghi:SantaFeApartmentsMemberus-gaap:FirstMortgageMemberghi:HesperiaCaliforniaMember2022-12-310001059142ghi:MortgageRevenueBondsMember2023-12-310001059142ghi:GovernmentalIssuerLoansAndTaxableGovernmentalIssuerLoansMember2023-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMemberghi:SandyCreekApartmentsGILMember2023-12-310001059142us-gaap:SecuredDebtMemberghi:BankersTrustAcquisitionMember2023-12-310001059142ghi:WestsideVillageMarketMemberghi:ShafterCaliforniaMember2023-01-012023-12-310001059142ghi:MagnoliaHeightsMember2023-01-012023-12-310001059142ghi:VallejoCaliforniaMemberghi:SolanoVistaMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:GermantownTNMemberghi:VantageAtGermantownMember2022-12-012022-12-310001059142ghi:AvistarAtParkwayMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberstpr:TX2022-12-310001059142ghi:VariableNotesMemberghi:ResidencyAtEmpireMrbsMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2023-01-012023-12-310001059142ghi:MortgageRevenueBondsMemberstpr:ILghi:BrookstoneMember2023-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMemberghi:SandyCreekApartmentsGILMember2023-01-012023-12-310001059142us-gaap:GeneralPartnerMemberghi:OtherExpensesMember2023-12-310001059142ghi:RunnymedeMemberghi:AustinTexasMember2023-12-310001059142ghi:Live929ApartmentsMember2023-01-010001059142ghi:CapitalImprovementsMembersrt:MinimumMember2023-12-310001059142ghi:WillowRunMemberghi:ColumbiaSouthCarolinaMember2022-12-310001059142ghi:AvistarPortfolio2Membersrt:OtherPropertyMember2023-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:TrustTwentyTwentyOneXfTwoThousandNineHundredAndTwentySixMemberghi:MizuhoCapitalMarketsLLCMember2022-12-310001059142ghi:SanAntonioTexasMemberghi:CrossingAtOneThousandFourHundredFifteenMemberus-gaap:FirstMortgageMember2022-01-012022-12-310001059142ghi:OspreyVillageGilMemberghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2023-12-310001059142ghi:TOBTrustMemberus-gaap:SubsequentEventMember2024-02-220001059142us-gaap:OperatingSegmentsMemberghi:MfPropertiesSegmentMemberus-gaap:InterestExpenseMember2023-01-012023-12-310001059142us-gaap:GeneralPartnerMember2023-01-012023-12-310001059142ghi:GovernmentalIssuerLoansMemberghi:SandyCreekApartmentsMember2023-08-012023-08-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:TheParkAtSondrioSeriesTwoThousandTwentyTwoAMemberghi:MizuhoCapitalMarketsLLCMember2023-01-012023-12-310001059142ghi:GreensPropertyMemberghi:DurhamNorthCarolinaMemberus-gaap:FirstMortgageMember2022-01-012022-12-310001059142us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMembersrt:ScenarioForecastMemberghi:GovernmentalIssuerLoansMemberghi:SandyCreekApartmentsMember2025-02-010001059142ghi:TwoThousandAndTwentyThreeBeneficialUnitCertificatesDistributionMemberghi:BeneficialUnitCertificatesMember2023-09-130001059142stpr:CAghi:LasPalmasTwoMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMember2023-12-310001059142us-gaap:FairValueInputsLevel3Memberghi:MortgageRevenueBondsIncludingBondsHeldInTrustMember2022-12-310001059142ghi:SeriesBPreferredUnitsMember2023-01-012023-12-310001059142ghi:VariableNotesMemberghi:LegacyCommonsAtSignalHillsAndHilltopAtSignalHillsGilsMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2023-12-310001059142ghi:SeriesA1PreferredUnitsIssuedOnAprilTwoThousandTwentyTwoMember2022-01-012022-12-310001059142ghi:RunnymedeMemberghi:AustinTexasMember2022-12-310001059142ghi:The5050StudentHousingUNLMembersrt:OtherPropertyMember2022-12-310001059142ghi:MortgageRevenueBondsHeldInTrustMember2022-12-310001059142ghi:SoLaImpactOpportunityZoneFundMemberghi:MezzanineFinancingMember2023-12-310001059142us-gaap:OperatingSegmentsMemberghi:SeniorsAndSkilledNursingMortgageRevenueBondInvestmentsSegmentMember2022-12-310001059142ghi:ResidencyAtEmpireMemberghi:SeriesBBFourMemberghi:BurbankCaliforniaMemberghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2022-01-012022-12-310001059142ghi:HoustonTexasMemberghi:ConcordAtWilliamcrestMemberus-gaap:FirstMortgageMember2022-01-012022-12-310001059142ghi:LosAngelesCaliforniaMemberus-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:ResidencyAtTheEntrepreneurJFiveMember2023-12-310001059142ghi:FreestoneAtGreeleyMemberghi:GreeleyCoMemberus-gaap:InvestmentsMember2022-12-310001059142ghi:MortgageRevenueBondsMemberghi:DurhamNorthCarolinaMemberghi:GatewayVillageMember2022-01-012022-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMemberghi:AvistarAtWoodHollowSeriesAMember2023-12-310001059142us-gaap:AvailableforsaleSecuritiesMember2022-12-310001059142ghi:CapitalUnitsRestrictedAndUnrestrictedMember2021-12-310001059142ghi:LovelandColoradoMemberus-gaap:InvestmentsMemberghi:VantageAtLovelandMember2022-12-310001059142ghi:PropertyLoansMember2023-12-310001059142ghi:TierThreeDistributionMemberus-gaap:LimitedPartnerMember2023-12-310001059142stpr:CAghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberghi:VillageAtMaderaMember2022-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMemberghi:AvistarAtWoodHollowSeriesAMember2022-12-310001059142ghi:SeriesA1PreferredUnitsIssuedOnJuneTwoThousandTwentyThreeMember2023-01-012023-12-310001059142ghi:BurbankCaliforniaMemberghi:ResidencyAtEmpireBbOneMember2023-12-310001059142stpr:CAghi:WestsideVillageMarketMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:BondPurchaseCommitmentMember2022-12-310001059142ghi:MortgageRevenueBondMember2023-12-310001059142ghi:AnaheimAndWalnutMemberghi:BondPurchaseCommitmentMember2022-12-310001059142ghi:GovernmentalIssuerLoansAndTaxableGovernmentalIssuerLoansMemberghi:PoppyGroveThreeMember2023-01-012023-12-310001059142ghi:PoppyGroveIIIMemberghi:TOBTrustMember2022-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:Live929Memberghi:MizuhoCapitalMarketsLLCMember2023-12-310001059142ghi:TierOneDistributionMemberus-gaap:GeneralPartnerMember2023-12-310001059142ghi:MortgageRevenueBondsMember2023-12-310001059142ghi:SouthparkMemberghi:MortgageRevenueBondMemberghi:TOBTrustMemberus-gaap:SubsequentEventMember2024-01-310001059142ghi:MizuhoCapitalMarketsTwoMember2022-12-310001059142ghi:PropertyLoansMember2022-12-310001059142ghi:MortgageRevenueBondsMemberus-gaap:SecondMortgageMemberghi:CrescentVillageWillowBendAndPostwoodsMemberghi:OhioPropertiesMember2022-12-310001059142ghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberstpr:TXghi:AvistarAtOaksMember2022-12-310001059142ghi:HoustonTexasMemberghi:AvistarAtCopperfieldMemberus-gaap:FirstMortgageMember2022-01-012022-12-310001059142ghi:MortgageRevenueBondsMemberghi:ResidencyAtEmpireMemberghi:BurbankCaliforniaMemberghi:SeriesBBThreeMember2022-12-310001059142ghi:JointVentureInvestmentsMemberghi:VantageAtLovelandMember2023-07-310001059142ghi:WillowPlaceApartmentsSupplementalMemberus-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:McDonoughGeorgiaMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2023-12-310001059142ghi:ScharbauerFlatsApartmentsMemberghi:SeniorConstructionFinancingMember2022-01-012022-12-310001059142us-gaap:RestrictedStockUnitsRSUMember2021-12-310001059142ghi:BarclaysCapitalIncMemberghi:VariableNotesMemberghi:VillagePointMemberghi:TOBTrustsSecuritizationMember2023-12-310001059142ghi:TOBTrustMemberghi:PoppyGroveIIMember2022-12-310001059142ghi:BarclaysCapitalIncMemberghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:PoppyGroveIiiGilMember2022-12-310001059142ghi:Trust2024Xf3219Memberghi:TOBTrustMemberus-gaap:SubsequentEventMember2024-02-012024-02-220001059142ghi:FirstMortgageOneMemberghi:MortgageRevenueBondsMemberghi:CrescentVillageWillowBendAndPostwoodsMemberghi:OhioPropertiesMember2022-01-012022-12-310001059142ghi:ResidencyAtEmpireBbThreeMemberghi:BurbankCaliforniaMember2023-01-012023-12-310001059142ghi:VillageAtRiversEdgeMemberghi:ColumbiaSouthCarolinaMember2022-12-310001059142ghi:AvistarOnBoulevardMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberstpr:TX2023-12-310001059142us-gaap:OperatingSegmentsMemberghi:MfPropertiesSegmentMemberus-gaap:InterestExpenseMember2022-01-012022-12-310001059142srt:OtherPropertyMember2023-12-310001059142stpr:CAghi:ResidencyAtTheEntrepreneurMemberus-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:SeriesJFiveMortgageMemberghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2023-01-012023-12-310001059142ghi:VillageAtRiversEdgeMemberghi:ColumbiaSouthCarolinaMember2023-01-012023-12-310001059142us-gaap:GeneralAndAdministrativeExpenseMemberus-gaap:RestrictedStockUnitsRSUMember2022-01-012022-12-310001059142ghi:MortgageRevenueBondsMemberus-gaap:SecondMortgageMemberghi:AvistarAtCrestMemberstpr:TX2023-12-310001059142ghi:AtTheMarketOfferingMemberghi:LimitedPartnerRestrictedAndUnrestrictedMember2022-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:LegacyCommonsAtSignalHillsAndHilltopAtSignalHillsGilsMemberghi:MizuhoCapitalMarketsLLCMember2022-01-012022-12-310001059142ghi:TaxExemptBondSecuritizationMember2023-12-310001059142ghi:LafayetteIndianaMemberghi:CopperGateApartmentsMember2022-12-310001059142ghi:SeasonsSanJuanCapistranoMemberghi:SanJuanCapistranoCaliforniaMemberus-gaap:FirstMortgageMember2022-01-012022-12-310001059142ghi:MortgageRevenueBondsHeldInTrustMemberghi:AvistarAtWoodHollowMemberus-gaap:FirstMortgageMemberstpr:TX2023-12-310001059142ghi:TwoThousandAndTwentyTwoBeneficialUnitCertificatesDistributionMemberghi:BeneficialUnitCertificatesMember2022-12-192022-12-190001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:TheIvyApartmentsMemberghi:MizuhoCapitalMarketsLLCMember2023-12-310001059142us-gaap:FairValueInputsLevel3Member2022-12-310001059142ghi:MemphisTennesseeMemberghi:ArborsAtHickoryRidgeMember2022-12-310001059142ghi:RenaissanceMemberghi:BatonRougeLouisianaMemberus-gaap:FirstMortgageMember2023-01-012023-12-310001059142ghi:LosAngelesCaliforniaMemberghi:HopeOnBroadwayMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2022-01-012022-12-310001059142ghi:PoppyGroveIMemberghi:GovernmentalIssuerLoansMember2022-12-310001059142ghi:TheParkAtViettiSeriesTwoThousandTwentyTwoAMemberghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2023-12-310001059142us-gaap:AvailableforsaleSecuritiesMember2023-12-310001059142ghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2023-12-310001059142stpr:CAghi:MortgageRevenueBondsHeldInTrustMemberghi:SeasonsAtSimiValleyMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:OspreyVillageSupplementalMemberghi:TOBTrustMemberus-gaap:SubsequentEventMember2024-02-012024-02-220001059142us-gaap:FirstMortgageMemberghi:MontclairApartmentsMemberghi:LemooreCaliforniaMember2023-01-012023-12-310001059142ghi:ParkAtViettiMemberghi:MortgageRevenueBondsMemberghi:Series2022BMortgageMember2022-12-310001059142stpr:CAghi:SycamoreWalkMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:MortgageRevenueBondsHeldInTrustMemberstpr:ILghi:BrookstoneMember2022-12-310001059142ghi:VariableNotesMemberghi:MizuhoAndBarclaysMember2020-12-310001059142ghi:MortgageRevenueBondsHeldInTrustMemberghi:JacksonManorApartmentsMemberstpr:MS2022-12-310001059142ghi:TierThreeDistributionMember2022-01-012022-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:ResidencyAtTheEntrepreneurMrbsMemberghi:MizuhoCapitalMarketsLLCMember2022-12-310001059142ghi:Seriesa1PreferredunitsissuedonfebruarytwothousandtwentythreeMember2023-01-012023-12-310001059142ghi:MorganStanleyBankMemberghi:VillageAtAvalonMemberghi:TermTobTrustSecuritizationMember2022-12-310001059142ghi:CrossingAtOneThousandFourHundredFifteenMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberstpr:TX2023-12-310001059142ghi:BarclaysCapitalIncMemberghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:TrustTwentyTwentyOneXfTwoThousandNineHundredAndFiftyThreeMember2022-12-310001059142ghi:MizuhoCapitalMarketsSixMember2023-12-310001059142ghi:MaderaCaliforniaMemberus-gaap:FirstMortgageMemberghi:VillageAtMaderaMember2023-01-012023-12-310001059142ghi:LegacyCommonsAtSignalHillsMemberus-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:SeniorConstructionFinancingMember2022-12-310001059142us-gaap:FairValueInputsLevel3Member2021-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMemberghi:MaryaliceCircleApartmentsMember2023-01-012023-12-310001059142ghi:SanAntonioTexasMemberghi:EsperanzaAtPaloAltoMember2023-01-012023-12-310001059142ghi:SummerhillMemberstpr:CAghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:TheParkAtSondrioSeriesTwoThousandTwentyTwoAMemberghi:MizuhoCapitalMarketsLLCMember2022-12-310001059142stpr:CAghi:CCBASeniorGardenApartmentsMemberghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2022-01-012022-12-310001059142ghi:Live929ApartmentsMemberghi:BaltimoreMarylandMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:ThirdMortgageMemberghi:ParkAtSondrioMemberghi:GreenvilleSouthCarolinaMemberghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2022-12-310001059142ghi:SummerhillMemberghi:BakersfieldCaliforniaMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:TaxableMortgageRevenueBondsMemberghi:EffectiveRateMinimumMember2022-12-310001059142ghi:ColumbiaGardensMemberghi:ColumbiaSouthCarolinaMember2022-01-012022-12-310001059142ghi:LosAngelesCaliforniaMemberghi:ResidencyAtTheEntrepreneurJThreeMember2023-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMemberghi:JacksonManorApartmentsMember2022-01-012022-12-310001059142ghi:CentennialCrossingsOneMember2023-01-012023-12-310001059142ghi:MortgageRevenueBondAndTaxableMortgageRevenueBondInvestmentsMember2023-01-012023-12-310001059142ghi:LegacyCommonsAtSignalHillsMemberghi:SaintPaulMinnesotaMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2022-12-310001059142ghi:MagnoliaHeightsMemberghi:CovingtonGeorgiaMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2023-01-012023-12-310001059142ghi:SanAntonioTexasMemberghi:AvistarAtCrestMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:TheJessamAtHaysFarmsMemberghi:JointVentureInvestmentsMember2023-12-310001059142ghi:SanAntonioTexasMemberus-gaap:SecondMortgageMemberghi:AvistarAtParkwayMember2023-12-310001059142country:AZghi:TheSaffordMemberghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2023-01-012023-12-310001059142stpr:CAghi:MortgageRevenueBondsMemberghi:CCBASeniorGardenApartmentsMember2023-12-310001059142ghi:RenaissanceMemberghi:MortgageRevenueBondsHeldInTrustMemberstpr:LAus-gaap:FirstMortgageMember2023-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMemberghi:HopeOnBroadwayGilMember2022-01-012022-12-310001059142ghi:VariableMThirtyOneMemberghi:TaxExemptBondSecuritizationMember2022-12-310001059142ghi:MortgageRevenueBondsHeldInTrustMember2023-12-310001059142ghi:SeriesAPreferredUnitsIssuedOnMarchTwoThousandSixteenMember2022-12-310001059142ghi:WillowPlaceApartmentsSupplementalMemberghi:SeniorConstructionFinancingMember2023-12-310001059142us-gaap:TotalReturnSwapMember2022-01-012022-12-310001059142ghi:VariableNotesMemberghi:OspreyVillageGilMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2022-12-310001059142ghi:GovernmentalIssuerLoanMemberus-gaap:FairValueInputsLevel3Member2022-12-310001059142ghi:MortgageRevenueBondsMemberghi:FortyOnColonyMemberghi:SeriesPTMortgageMember2023-12-310001059142us-gaap:InterestRateFloorMemberghi:GovernmentalIssuerLoansMembersrt:MinimumMember2023-12-310001059142ghi:MizuhoCapitalMarketsTwoMember2023-01-012023-12-310001059142ghi:AvistarAtCrestMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberstpr:TX2022-12-310001059142stpr:CAghi:VineyardGardensMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:MortgageRevenueBondsMemberghi:CrossCreekMemberghi:BeaufortSouthCarolinaMember2022-12-310001059142us-gaap:OperatingSegmentsMemberghi:MarketRateJointVentureInvestmentsMember2022-01-012022-12-310001059142us-gaap:AccumulatedOtherComprehensiveIncomeMember2022-01-012022-12-3100010591422022-12-310001059142srt:MaximumMemberus-gaap:InterestRateFloorMember2023-12-310001059142ghi:MagnoliaHeightsMemberghi:CovingtonGeorgiaMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2023-12-310001059142us-gaap:AccumulatedOtherComprehensiveIncomeMember2022-12-310001059142ghi:ResidencyAtTheEntrepreneurJOneMemberghi:LosAngelesCaliforniaMember2022-12-310001059142ghi:HarmonyTerraceMemberstpr:CAghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:MizuhoCapitalMarketsLLCMemberus-gaap:SubsequentEventMember2024-01-012024-01-310001059142us-gaap:AccountingStandardsUpdate201613Member2023-01-010001059142ghi:TaxableGovernmentalIssuerLoansMemberghi:PoppyGroveThreeMember2023-01-012023-12-310001059142us-gaap:SwapMember2023-12-310001059142ghi:GovernmentalIssuerLoansMemberghi:ScharbauerFlatsApartmentsMember2023-06-012023-06-300001059142ghi:LosAngelesCaliforniaMemberghi:ResidencyAtTheEntrepreneurJThreeMember2023-01-012023-12-310001059142ghi:SycamoreWalkMemberghi:BakersfieldCaliforniaMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:HardenRanchMemberus-gaap:FirstMortgageMemberghi:SalinasCaliforniaMember2022-01-012022-12-310001059142us-gaap:SeriesAPreferredStockMember2023-10-012023-10-310001059142stpr:CAghi:FortyOnColonyMemberghi:SeriesPMortgageMemberghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2023-12-310001059142ghi:JointVentureInvestmentsMemberghi:VantageAtLovelandMember2023-12-310001059142ghi:SanDiegoCaliforniaMemberghi:CCBASeniorGardenApartmentsMember2022-12-310001059142ghi:TaxableGovernmentalIssuerLoansMemberghi:PoppyGroveThreeMember2023-12-310001059142ghi:MortgageRevenueBondsMemberghi:ProvisionCenter20141Memberstpr:TN2022-12-310001059142stpr:CAghi:ResidencyAtTheEntrepreneurMemberus-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:SeriesJFourMortgageMemberghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2022-01-012022-12-310001059142us-gaap:FairValueInputsLevel2Member2023-12-310001059142us-gaap:FairValueInputsLevel2Memberus-gaap:DerivativeMember2022-12-310001059142ghi:MurfreesboroTNMemberghi:VantageAtMurfreesboroMember2022-01-012022-12-310001059142ghi:UnfundedCommitmentsMember2023-12-310001059142srt:MaximumMemberghi:CapitalImprovementsMember2023-12-310001059142stpr:CAghi:VillageAtHanfordSquareMemberghi:SeriesHMortgageMemberghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2023-12-310001059142ghi:SanAntonioTexasMemberghi:HeightsAtHeightsAtFiveHundredFifteenMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:TheParkAtViettiSeriesTwoThousandTwentyTwoAMemberghi:SpartanburgSouthCarolinaMember2023-01-012023-12-310001059142ghi:WillowPlaceApartmentsMemberghi:GovernmentalIssuerLoansMember2023-11-012023-11-300001059142ghi:LandHeldForDevelopmentMember2022-12-310001059142ghi:BarclaysBankPLCMember2023-01-012023-12-310001059142stpr:NMghi:VillageAtAvalonMemberghi:MortgageRevenueBondsHeldInTrustMember2022-12-310001059142ghi:TaxExemptBondSecuritizationMemberghi:FixedMFortyFiveMember2023-12-310001059142ghi:AvistarAtCopperfieldMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberstpr:TX2022-12-310001059142us-gaap:SifmaMunicipalSwapRateMemberghi:LosAngelesCaliforniaMemberghi:HopeOnBroadwayMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2022-12-310001059142ghi:AtTheMarketOfferingMember2022-12-310001059142stpr:CAghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberghi:MontclairApartmentsMember2023-12-310001059142ghi:MortgageRevenueBondsMember2022-12-310001059142ghi:LegacyCommonsAtSignalHillsGilAndLegacyCommonsAtSignalHillsMember2023-01-012023-12-310001059142ghi:SanMarcosTXMemberghi:VantageAtSanMarcosMember2022-12-310001059142ghi:SeriesA1PreferredUnitsIssuedOnOctoberTwoThousandTwentyTwoMember2023-01-012023-12-310001059142ghi:MortgageRevenueBondMemberghi:OcotilloSpringsSeriesA1Member2023-07-310001059142us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMemberghi:PropertyLoansMember2023-12-310001059142ghi:Live929ApartmentsMemberghi:MortgageRevenueBondsMemberghi:BaltimoreMdMemberghi:TwoThousandFourteenSecondMortgageMember2022-01-012022-01-310001059142stpr:CAghi:ResidencyAtTheEntrepreneurMemberghi:SeriesJFiveMortgageMemberghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2023-01-012023-12-310001059142ghi:GreystoneManagerMembersrt:MaximumMemberus-gaap:RestrictedStockUnitsRSUMember2023-12-310001059142ghi:SoledadCaliforniaMemberghi:SanVicenteMemberus-gaap:FirstMortgageMember2023-01-012023-12-310001059142ghi:AustinTexasMemberus-gaap:FirstMortgageMemberghi:AvistarAtWoodHollowMember2022-12-310001059142ghi:MizuhoCapitalMarketsSevenMember2023-01-012023-12-310001059142ghi:Live929ApartmentsMemberghi:MortgageRevenueBondsMemberghi:BaltimoreMdMemberghi:TwoThousandFourteenSecondMortgageMember2022-01-310001059142ghi:SummerhillMemberghi:BakersfieldCaliforniaMemberus-gaap:FirstMortgageMember2023-01-012023-12-310001059142ghi:TaxableGovernmentalIssuerLoanMember2023-12-310001059142stpr:CAghi:WestsideVillageMarketMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMember2022-12-310001059142us-gaap:FirstMortgageMemberghi:SantaFeApartmentsMemberghi:HesperiaCaliforniaMember2023-01-012023-12-310001059142ghi:BufordGeorgiaMemberghi:MaryaliceCircleApartmentsMember2023-12-310001059142ghi:MaderaCaliforniaMemberus-gaap:FirstMortgageMemberghi:VillageAtMaderaMember2022-12-310001059142ghi:The5050StudentHousingUNLAndTheSuitesOnPaseoMfPropertyMember2023-01-012023-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMemberghi:MaryaliceCircleApartmentsMember2023-12-310001059142ghi:MizuhoCapitalMarketsTwelveMember2023-01-012023-12-310001059142ghi:TheResidencyAtEntrepreneurMemberghi:SeriesJFiveMortgageMemberghi:MortgageRevenueBondsAndTaxableMortgageRevenueBondsMember2023-12-310001059142us-gaap:OperatingSegmentsMemberghi:SeniorsAndSkilledNursingMortgageRevenueBondInvestmentsSegmentMember2023-01-012023-12-310001059142ghi:WillowPlaceApartmentsMemberghi:McDonoughGeorgiaMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2023-01-012023-12-310001059142ghi:PropertyLoansMember2023-01-012023-12-310001059142ghi:ResidencyAtTheMayerMemberghi:HollywoodCaMemberus-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:LegacyCommonsAtSignalHillsGilAndLegacyCommonsAtSignalHillsMemberus-gaap:SubsequentEventMember2024-02-012024-02-220001059142stpr:CAghi:MortgageRevenueBondsMemberghi:ResidencyAtEmpireBbTwoMember2022-12-310001059142ghi:NetResultFromDerivativeTransactionsMember2023-01-012023-12-310001059142ghi:TheJessamAtHaysFarmsMemberghi:HuntsvilleALMemberus-gaap:InvestmentsMember2023-12-310001059142ghi:TheResidencyAtEmpireMemberghi:SeriesBbThreeMortgageMemberghi:MortgageRevenueBondsAndTaxableMortgageRevenueBondsMember2023-01-012023-12-310001059142ghi:LandHeldForDevelopmentMember2023-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMemberghi:SoLaImpactOpportunityZoneFundMember2023-01-012023-12-310001059142stpr:CAghi:MontecitoAtWilliamsRanchApartmentsMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:ConcordAtWilliamcrestMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberstpr:TX2023-12-310001059142ghi:MizuhoCapitalMarketsSixMember2023-01-012023-12-310001059142ghi:LegacyCommonsAtSignalHillsMemberus-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:TOBTrustMemberus-gaap:SubsequentEventMember2024-02-012024-02-220001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:AvistarAtCopperfieldSeriesAMemberghi:MizuhoCapitalMarketsLLCMember2022-12-310001059142ghi:OaksAtGeorgetownMemberghi:GeorgetownTexasMemberus-gaap:FirstMortgageMember2022-01-012022-12-310001059142ghi:TaxableMortgageRevenueBondsMember2022-12-310001059142stpr:CAghi:MortgageRevenueBondsHeldInTrustMemberghi:HardenRanchMemberus-gaap:FirstMortgageMember2022-12-310001059142us-gaap:RelatedPartyMemberus-gaap:AccountsPayableAndAccruedLiabilitiesMember2022-12-310001059142ghi:MontecitoAtWilliamsRanchApartmentsMemberus-gaap:FirstMortgageMemberghi:SalinasCaliforniaMember2023-01-012023-12-310001059142ghi:SoLaImpactOpportunityZoneFundMember2022-12-012022-12-310001059142ghi:MckinneyFallsTexasMemberghi:VantageAtMckinneyFallsMemberus-gaap:InvestmentsMember2022-12-310001059142ghi:MizuhoCapitalMarketsLLCMemberus-gaap:SubsequentEventMember2024-01-310001059142ghi:OspreyVillageSupplementalMemberus-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:SeniorConstructionFinancingMember2023-12-310001059142us-gaap:GeneralPartnerMemberghi:ConsultingAndTravelExpensesMember2023-12-310001059142ghi:TheParkAtViettiMembercountry:SCghi:MortgageRevenueBondsHeldInTrustMember2022-12-310001059142ghi:GreensPropertyMemberus-gaap:SecondMortgageMemberghi:DurhamNorthCarolinaMember2022-12-310001059142us-gaap:LatestTaxYearMember2023-01-012023-12-310001059142ghi:GreensHoldCoMember2022-12-310001059142ghi:JointVentureInvestmentsMemberghi:FreestoneGreeleyMember2023-01-012023-12-310001059142ghi:ResidencyAtEmpireBbThreeMemberghi:BurbankCaliforniaMember2022-12-310001059142stpr:CA2023-12-310001059142ghi:MortgageRevenueBondsHeldInTrustMemberstpr:TXghi:BrutonApartmentsMember2022-12-310001059142ghi:BarclaysCapitalIncMemberghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:PoppyGroveIGilMember2023-01-012023-12-310001059142us-gaap:FairValueInputsLevel3Memberghi:MortgageRevenueBondsHeldInTrustMember2023-12-310001059142ghi:MaderaCaliforniaMemberus-gaap:FirstMortgageMemberghi:VillageAtMaderaMember2022-01-012022-12-310001059142us-gaap:GeneralPartnerMemberghi:OfficeExpensesMember2022-12-310001059142ghi:KissimmeeFloridaMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMemberghi:OspreyVillageMember2023-01-012023-12-310001059142ghi:SeriesA1PreferredUnitsIssuedOnOctoberTwoThousandTwentyTwoMember2022-12-310001059142ghi:Live929ApartmentsMemberghi:ThirdMortgageMemberghi:BaltimoreMdMember2022-01-310001059142ghi:OasisAtTwinLakesMemberghi:GovernmentalIssuerLoansMember2023-01-012023-12-310001059142ghi:MortgageRevenueBondsMemberghi:ParkAtSondrioMemberghi:Series2022BMortgageMember2022-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:LegacyCommonsAtSignalHillsAndHilltopAtSignalHillsGilsMemberghi:MizuhoCapitalMarketsLLCMember2023-01-012023-12-310001059142ghi:MizuhoCapitalMarketsTwoMember2022-01-012022-12-310001059142ghi:MortgageRevenueBondsMemberghi:JacksonMsMemberghi:JacksonManorApartmentsMember2023-11-300001059142ghi:OasisAtTwinLakesMemberghi:RosevilleMNMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2022-01-012022-12-310001059142ghi:MontclairApartmentsMemberus-gaap:FirstMortgageMemberghi:LemooreCaliforniaMember2022-01-012022-12-310001059142stpr:CAghi:ResidencyAtTheEntrepreneurJThreeMemberghi:MortgageRevenueBondsHeldInTrustMember2022-12-310001059142ghi:GreensPropertyMemberus-gaap:SecondMortgageMemberghi:DurhamNorthCarolinaMember2022-01-012022-12-310001059142ghi:ResidencyAtTheMayerMemberghi:HollywoodCaMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:ForwardPurchaseCommitmentsMemberus-gaap:SubsequentEventMember2024-02-012024-02-220001059142ghi:GreerSouthCarolinaMemberghi:MortgageRevenueBondsMemberghi:BridleRidgeMember2022-01-012022-12-310001059142stpr:CAghi:ResidencyAtTheEntrepreneurMemberghi:MortgageRevenueBondsMemberghi:SeriesJFourMortgageMember2022-12-310001059142us-gaap:FairValueInputsLevel3Memberghi:MortgageRevenueBondsIncludingBondsHeldInTrustMember2023-12-310001059142ghi:HopeOnAvalonTaxableGilMemberghi:GovernmentalIssuerLoansMemberus-gaap:SubsequentEventMember2024-01-012024-01-310001059142ghi:EffectiveRateMaximumMemberghi:TaxableMortgageRevenueBondsMember2022-12-310001059142ghi:GovernmentalIssuerLoansAndTaxableGovernmentalIssuerLoansMemberghi:PoppyGroveTwoMember2023-01-012023-12-310001059142ghi:LegacyCommonsAtSignalHillsMemberghi:TOBTrustMemberus-gaap:SubsequentEventMember2024-02-220001059142ghi:FirstMortgageOneMemberghi:OcotilloSpringsMemberghi:BrawleyCAMember2023-01-012023-12-310001059142ghi:MortgageRevenueBondsAndTaxableMortgageRevenueBondsMember2023-12-310001059142ghi:SanAntonioTexasMemberghi:AvistarAtParkwayMemberus-gaap:FirstMortgageMember2022-01-012022-12-310001059142ghi:MortgageRevenueBondsMemberus-gaap:SecondMortgageMemberghi:AvistarIn09Memberstpr:TX2022-12-310001059142ghi:MagnoliaHeightsMember2022-06-300001059142us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMembersrt:ScenarioForecastMemberghi:SandyCreekApartmentsMember2025-02-010001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:AvistarAtCopperfieldSeriesAMemberghi:MizuhoCapitalMarketsLLCMember2022-01-012022-12-310001059142ghi:DecaturAngleMemberghi:FortWorthTexasMember2022-12-310001059142us-gaap:FairValueInputsLevel3Memberus-gaap:DerivativeFinancialInstrumentsAssetsMember2021-12-310001059142ghi:VariableMThirtyOneMemberghi:TaxExemptBondSecuritizationMember2022-01-012022-12-310001059142ghi:LosAngelesCaliforniaMemberghi:ResidencyAtTheEntrepreneurJTwoMember2022-01-012022-12-310001059142ghi:AlbuquerqueNewMexicoMemberus-gaap:FirstMortgageMemberghi:SilverMoonMember2022-12-310001059142ghi:FreestoneAtGreeleyMember2023-02-280001059142ghi:VariableMThirtyOneMemberghi:TaxExemptBondSecuritizationMember2023-12-310001059142ghi:TheJessamAtHaysFarmsMemberghi:JointVentureInvestmentsMember2023-01-012023-12-310001059142ghi:KissimmeeFloridaMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMemberghi:OspreyVillageMember2023-12-310001059142stpr:CAghi:ResidencyAtTheEntrepreneurMemberghi:SeriesJFourMortgageMemberghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2022-01-012022-12-310001059142ghi:VariableNotesMemberghi:AvistarAtWilcrestSeriesAMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2022-12-310001059142stpr:CAghi:CourtyardMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:SanAntonioTexasMemberghi:AvistarOnBoulevardMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:DecaturAngleMemberghi:FortWorthTexasMember2023-12-310001059142ghi:OcotilloSpringsMemberghi:LiborMemberghi:BrawleyCAMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:EsperanzaAtPaloAltoMemberghi:MortgageRevenueBondsHeldInTrustMemberstpr:TX2023-12-310001059142ghi:TomballTXMemberghi:VantageAtTomballMemberus-gaap:InvestmentsMember2023-01-012023-12-310001059142us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMemberghi:TaxableGovernmentalIssuerLoanMember2023-12-310001059142ghi:MontclairApartmentsMemberus-gaap:FirstMortgageMemberghi:LemooreCaliforniaMember2022-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMemberghi:VineyardGardensSeriesAMember2023-01-012023-12-310001059142ghi:AvistarAtCrestMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberstpr:TX2023-12-310001059142ghi:GovernmentalIssuerLoansAndTaxableGovernmentalIssuerLoansMemberghi:PoppyGroveOneMember2023-01-012023-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMemberghi:JacksonManorApartmentsMember2022-12-310001059142ghi:LegacyCommonsAtSignalHillsMemberus-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:SeniorConstructionFinancingMember2023-12-310001059142stpr:CAghi:ResidencyAtTheEntrepreneurMemberghi:SeriesJThreeMortgageMemberghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2022-01-012022-12-310001059142ghi:MontecitoAtWilliamsRanchApartmentsMemberstpr:CAghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:ParkAtViettiMemberghi:MortgageRevenueBondsMemberghi:Series2022BMortgageMember2022-01-012022-12-310001059142ghi:TheParkAtViettiSeriesTwoThousandTwentyTwoAMemberghi:SpartanburgSouthCarolinaMember2022-12-310001059142ghi:ResidencyAtMayerSeriesAMemberghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2023-01-012023-12-310001059142ghi:SeriesAPreferredUnitsIssuedOnDecemberTwoThousandSixteenMember2022-12-310001059142us-gaap:OperatingSegmentsMemberghi:AffordableMultifamilyMortgageRevenueBondInvestmentsSegmentMemberus-gaap:InterestExpenseMember2023-01-012023-12-310001059142ghi:PropertyLoansMemberghi:OspreyVillageMember2023-01-012023-12-310001059142ghi:HoustonTexasMemberus-gaap:FirstMortgageMemberghi:AvistarAtWilcrestMember2022-12-310001059142ghi:EsperanzaAtPaloAltoMemberghi:MortgageRevenueBondsHeldInTrustMemberstpr:TX2022-12-310001059142ghi:OhioPropertiesMember2022-03-012022-03-310001059142ghi:TheParkAtViettiSeriesTwoThousandTwentyTwoAMemberghi:SpartanburgSouthCarolinaMember2022-01-012022-12-310001059142stpr:CAghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberghi:MontevistaMember2022-12-310001059142us-gaap:FairValueInputsLevel3Member2022-01-012022-12-310001059142ghi:TheIvyApartmentsMemberstpr:SCghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2023-12-310001059142ghi:TheParkAtViettiSeriesTwoThousandTwentyTwoAMemberghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2022-01-012022-12-310001059142ghi:LegacyCommonsAtSignalHillsMemberghi:TOBTrustMemberus-gaap:SubsequentEventMember2024-02-012024-02-220001059142ghi:MorganStanleyBankMemberghi:VillageAtAvalonMemberghi:TermTobTrustSecuritizationMember2023-01-012023-12-310001059142srt:ConsolidationEliminationsMember2023-12-310001059142us-gaap:OperatingSegmentsMemberghi:MarketRateJointVentureInvestmentsMember2023-12-310001059142ghi:VancouverWashingtonMemberghi:FifteenWestApartmentsMemberus-gaap:FirstMortgageMember2023-01-012023-12-310001059142ghi:AustinTexasMemberghi:AvistarAtWoodHollowMemberus-gaap:FirstMortgageMember2022-01-012022-12-310001059142ghi:ElkGroveCaMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMemberghi:PoppyGroveIIMember2023-12-310001059142ghi:MizuhoCapitalMarketsThreeMember2023-12-310001059142ghi:CentennialColoradoMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMemberghi:CentennialCrossingsMember2022-01-012022-12-310001059142ghi:MizuhoCapitalMarketsThirteenMember2023-12-310001059142us-gaap:EquityMethodInvestmentsMember2023-12-310001059142ghi:MontecitoAtWilliamsRanchApartmentsMemberus-gaap:FirstMortgageMemberghi:SalinasCaliforniaMember2022-01-012022-12-310001059142ghi:MortgageRevenueBondsMemberghi:EffectiveRateMinimumMember2023-12-310001059142ghi:WillowPlaceApartmentsMemberghi:SeniorConstructionFinancingMember2022-01-012022-12-310001059142ghi:AtTheMarketOfferingMemberghi:LimitedPartnerRestrictedAndUnrestrictedMember2022-12-012022-12-310001059142us-gaap:InvestmentsMember2023-12-310001059142us-gaap:FairValueInputsLevel3Memberus-gaap:DerivativeFinancialInstrumentsAssetsMember2022-01-012022-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:AvistarAtCopperfieldSeriesAMemberghi:MizuhoCapitalMarketsLLCMember2023-01-012023-12-310001059142ghi:SeniorConstructionFinancingMember2022-12-310001059142ghi:FortyOnColonyMemberghi:SeriesPMortgageMemberghi:LaMesaCaliforniaMember2023-01-012023-12-310001059142ghi:VillagePointApartmentsMemberghi:MonroeNewJerseyMember2023-12-310001059142us-gaap:DerivativeMember2022-12-310001059142ghi:VineyardGardensMemberghi:OxnardCaliforniaMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:TierTwoDistributionMember2022-01-012022-12-310001059142ghi:PalmsAtPremierParkApartmentsMemberghi:ColumbiaSouthCarolinaMember2023-01-012023-12-310001059142ghi:SeriesA1PreferredUnitsMember2022-01-012022-12-310001059142ghi:HarmonyTerraceMemberghi:SimiValleyCaliforniaMemberus-gaap:FirstMortgageMember2023-01-012023-12-310001059142ghi:OasisAtTwinLakesMemberghi:RosevilleMNMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2022-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:VineyardGardensSeriesAMemberghi:MizuhoCapitalMarketsLLCMember2022-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMemberghi:WindsorShoresApartmentsMember2023-01-012023-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:TheSaffordMemberghi:MizuhoCapitalMarketsLLCMember2023-01-012023-12-310001059142ghi:VariableNotesMemberghi:OspreyVillageGilMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2023-01-012023-12-310001059142ghi:LimitedPartnerRestrictedAndUnrestrictedMember2023-12-310001059142ghi:TaxableBondsMember2023-12-310001059142ghi:AvistarPortfolio2Membersrt:OtherPropertyMember2023-01-012023-12-310001059142ghi:HoustonTexasMemberus-gaap:FirstMortgageMemberghi:AvistarAtWilcrestMember2022-01-012022-12-310001059142ghi:TaxExemptBondSecuritizationMemberghi:FixedMFortyFiveMember2022-12-310001059142ghi:MortgageRevenueBondMember2022-12-310001059142country:SCghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberghi:WiindsorShoresApartmentsMember2023-12-310001059142ghi:TrustTwentyTwentyOneXFTwoThousandNineHundredAndThirtyNineMemberghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2022-12-310001059142ghi:MortgageRevenueBondsMember2023-07-310001059142ghi:CentennialColoradoMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMemberghi:CentennialCrossingsMember2022-12-310001059142ghi:AffordableMultifamilyMortgageRevenueBondInvestmentsSegmentMember2023-01-012023-12-310001059142ghi:SeniorConstructionFinancingMemberghi:CentennialCrossingsMember2022-01-012022-12-310001059142srt:MaximumMemberus-gaap:InterestRateFloorMemberghi:GovernmentalIssuerLoansMember2022-12-310001059142ghi:KissimmeeFloridaMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMemberghi:OspreyVillageMember2022-01-012022-12-310001059142ghi:PoppyGroveOneMemberghi:TOBTrustMember2022-12-310001059142country:SCghi:MortgageRevenueBondsHeldInTrustMemberghi:VillageAtRiversEdgeMember2022-12-310001059142ghi:LosAngelesCaliforniaMemberghi:ResidencyAtTheEntrepreneurJFiveMember2023-01-012023-12-310001059142ghi:SanAntonioTexasMemberghi:VantageAtOConnorMember2023-01-012023-12-310001059142ghi:SeriesJOneMortgageMemberstpr:CAghi:ResidencyAtTheEntrepreneurMemberghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2022-01-012022-12-310001059142ghi:OspreyVillageMemberghi:SeniorConstructionFinancingMember2022-12-310001059142srt:MaximumMemberghi:MizuhoCapitalMarketsFourMember2023-12-310001059142us-gaap:FairValueInputsLevel3Member2023-12-310001059142ghi:AvistarAtCopperfieldMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberstpr:TX2023-12-310001059142ghi:FixedNotesMemberghi:TaxExemptBondSecuritizationResidualFinancingMember2023-01-012023-12-310001059142ghi:OspreyVillageSupplementalMemberghi:TOBTrustMemberus-gaap:SubsequentEventMember2024-02-220001059142ghi:MortgageRevenueBondsHeldInTrustMemberghi:JacksonManorApartmentsMemberstpr:MS2023-12-310001059142ghi:SeriesJTMortgageMemberus-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:TheResidencyAtEntrepreneurMemberghi:MortgageRevenueBondsAndTaxableMortgageRevenueBondsMember2023-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMemberghi:WindsorShoresApartmentsMember2023-12-310001059142ghi:MortgageRevenueBondsMemberghi:EffectiveRateMaximumMember2023-12-310001059142ghi:MizuhoCapitalMarketsOneMember2022-01-012022-12-310001059142ghi:TierThreeDistributionMemberghi:LimitedPartnerRestrictedAndUnrestrictedMember2022-01-012022-12-310001059142srt:MaximumMemberus-gaap:SecuredDebtMember2021-06-012021-06-300001059142ghi:SanAntonioTexasMemberghi:CrossingAtOneThousandFourHundredFifteenMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:TheResidencyAtEmpireMemberghi:SeriesBbThreeMortgageMemberghi:MortgageRevenueBondsAndTaxableMortgageRevenueBondsMember2023-12-310001059142ghi:The5050StudentHousingUNLMember2022-12-012022-12-310001059142ghi:SycamoreWalkMemberghi:BakersfieldCaliforniaMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:MagnoliaHeightsMemberghi:SeniorConstructionFinancingMember2023-12-310001059142stpr:CAghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberghi:TylerParkTownhomesMember2022-12-310001059142stpr:CAghi:MortgageRevenueBondsHeldInTrustMemberghi:ResidencyAtEmpireBbTwoMember2023-12-310001059142ghi:TaxableGovernmentalIssuerLoansMemberghi:PoppyGroveTwoMember2023-12-310001059142ghi:SanAntonioTexasMemberghi:AvistarAtParkwayMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:ElkGroveCaMemberghi:PoppyGroveIMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2022-12-310001059142ghi:WillowPlaceApartmentsSupplementalMemberghi:SeniorConstructionFinancingMember2023-01-012023-12-310001059142us-gaap:MortgagesMemberghi:VantageAtSanMarcosMemberus-gaap:RealEstateMember2023-12-310001059142us-gaap:SecuredDebtMemberghi:BankUnitedGeneralMember2022-01-012022-12-310001059142ghi:LakewoodCaliforniaMemberghi:SeasonsLakewoodMemberus-gaap:FirstMortgageMember2023-01-012023-12-310001059142ghi:BufordGeorgiaMemberghi:MaryaliceCircleApartmentsMember2023-01-012023-12-310001059142ghi:MizuhoCapitalMarketsElevenMember2023-12-310001059142us-gaap:FairValueInputsLevel3Memberus-gaap:DerivativeFinancialInstrumentsAssetsMember2023-12-310001059142ghi:MizuhoCapitalMarketsNineMember2023-01-012023-12-310001059142stpr:CAghi:MortgageRevenueBondsHeldInTrustMemberghi:SantaFeApartmentsMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:TierTwoDistributionMemberus-gaap:GeneralPartnerMember2022-01-012022-12-310001059142stpr:CAghi:ResidencyAtTheEntrepreneurMemberghi:MortgageRevenueBondsMemberghi:SeriesJFiveMortgageMember2023-12-310001059142ghi:FixedMThirtyThreeMemberghi:TaxExemptBondSecuritizationMember2022-12-310001059142ghi:FreestoneGreeleyMember2022-10-310001059142ghi:WillowRunMemberghi:ColumbiaSouthCarolinaMember2023-12-310001059142ghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberghi:AvistarOnHillsMemberstpr:TX2023-12-310001059142ghi:GreenfieldCaliforniaMemberghi:TylerParkTownhomesMember2023-12-310001059142ghi:LegacyCommonsAtSignalHillsMemberghi:SaintPaulMinnesotaMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2023-01-012023-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MontecitoAtWilliamsRanchSeriesAMemberghi:MizuhoCapitalMarketsLLCMember2022-12-310001059142ghi:SimiValleyCaliforniaMemberghi:HarmonyTerraceMemberus-gaap:FirstMortgageMember2022-01-012022-12-310001059142ghi:ProvisionCenter20141Memberghi:KnoxvilleTennesseeMember2023-12-310001059142ghi:MeadowValleyMemberghi:MortgageRevenueBondMember2022-12-310001059142ghi:GreenfieldCaliforniaMemberghi:TylerParkTownhomesMember2022-01-012022-12-310001059142ghi:ResidencyAtMayerSeriesAMemberghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2022-01-012022-12-310001059142us-gaap:OperatingSegmentsMemberghi:AffordableMultifamilyMortgageRevenueBondInvestmentsSegmentMember2022-01-012022-12-310001059142ghi:TierTwoDistributionMemberus-gaap:GeneralPartnerMember2023-12-310001059142ghi:Live929ApartmentsMembersrt:OtherPropertyMember2023-12-310001059142ghi:AvistarIn09Memberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberstpr:TX2023-12-310001059142srt:MaximumMemberghi:GovernmentalIssuerLoansMemberghi:PoppyGroveTwoMember2022-12-310001059142ghi:HarmonyTerraceMemberstpr:CAghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:VancouverWashingtonMemberghi:FifteenWestApartmentsMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:MagnoliaHeightsMemberghi:SeniorConstructionFinancingMember2022-12-310001059142ghi:BufordGeorgiaMemberghi:HandselMorganVillageApartmentsMember2023-01-012023-12-3100010591422022-07-012022-09-300001059142ghi:MagnoliaHeightsMemberghi:CovingtonGeorgiaMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2022-12-310001059142ghi:AffordableMultifamilyMortgageRevenueBondInvestmentsSegmentMemberus-gaap:OperatingSegmentsMemberghi:NetResultFromDerivativeTransactionsMember2022-01-012022-12-310001059142ghi:LimitedPartnerRestrictedAndUnrestrictedMember2023-01-012023-12-310001059142ghi:SandyCreekApartmentsMemberghi:SeniorConstructionFinancingMember2023-12-3100010591422023-12-012023-12-310001059142ghi:TaxableMortgageRevenueBondsMemberghi:EffectiveRateMinimumMember2023-12-310001059142stpr:CAghi:ResidencyAtTheEntrepreneurMemberghi:SeriesJTwoMortgageMemberghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2022-01-012022-12-310001059142us-gaap:RelatedPartyMember2022-12-310001059142us-gaap:EstimateOfFairValueFairValueDisclosureMember2023-12-310001059142stpr:TNghi:MortgageRevenueBondsHeldInTrustMemberghi:ArborsAtHickoryRidgeMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:HoustonTexasMemberghi:ConcordAtWilliamcrestMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:BarclaysCapitalIncMemberghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:TrustTwentyTwentyOneXfTwoThousandNineHundredAndFiftyThreeMember2023-01-012023-12-310001059142ghi:GovernmentalIssuerLoansMemberus-gaap:SubsequentEventMember2024-01-012024-01-310001059142us-gaap:CarryingReportedAmountFairValueDisclosureMember2023-12-310001059142ghi:AffordableMultifamilyMortgageRevenueBondInvestmentsSegmentMemberus-gaap:CommercialRealEstateMember2023-01-012023-12-310001059142stpr:NMghi:VillageAtAvalonMemberghi:MortgageRevenueBondsHeldInTrustMember2023-12-310001059142ghi:MindenNvMemberghi:ValageSeniorLivingCarsonValleyMemberus-gaap:InvestmentsMember2023-01-012023-12-310001059142ghi:FreestoneAtGreeleyMemberghi:GreeleyCoMemberus-gaap:InvestmentsMember2023-12-310001059142ghi:MeadowValleyMemberghi:GarfieldCharterTownshipMiMember2023-12-310001059142ghi:MontecitoAtWilliamsRanchApartmentsMemberus-gaap:FirstMortgageMemberghi:SalinasCaliforniaMember2022-12-310001059142ghi:LakewoodCaliforniaMemberghi:SeasonsLakewoodMemberus-gaap:FirstMortgageMember2022-01-012022-12-310001059142stpr:CAghi:MortgageRevenueBondsMemberghi:SolanoVistaMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMemberghi:MeadowValleyMember2023-12-310001059142ghi:SummerhillMemberghi:BakersfieldCaliforniaMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:MfPropertiesSegmentMember2023-12-310001059142ghi:ProvisionCenter20141Memberghi:KnoxvilleTennesseeMember2022-01-012022-12-310001059142ghi:GovernmentalIssuerLoansMemberghi:HopeOnAvalonMember2023-07-012023-07-310001059142ghi:VallejoCaliforniaMemberghi:SolanoVistaMemberus-gaap:FirstMortgageMember2022-01-012022-12-310001059142ghi:ResidencyAtTheMayerMemberghi:HollywoodCaMemberus-gaap:FirstMortgageMember2023-01-012023-12-310001059142us-gaap:FairValueInputsLevel3Memberghi:TaxableBondsMember2023-12-310001059142us-gaap:SeriesBPreferredStockMemberus-gaap:SubsequentEventMember2024-01-012024-01-310001059142ghi:GreystoneManagerMembersrt:MaximumMemberus-gaap:RestrictedStockUnitsRSUMember2023-01-012023-12-310001059142ghi:MaryaliceCircleApartmentsMemberstpr:GAghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2023-12-310001059142ghi:OspreyVillageMemberghi:SeniorConstructionFinancingMember2023-12-310001059142ghi:VallejoCaliforniaMemberghi:SolanoVistaMemberus-gaap:FirstMortgageMember2023-01-012023-12-310001059142ghi:ConcordAtGulfgateMemberghi:HoustonTexasMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:MizuhoCapitalMarketsNineMember2023-12-310001059142ghi:ResidencyAtEmpireMemberghi:SeriesBBFourMemberghi:BurbankCaliforniaMemberghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2022-12-310001059142ghi:ComptonCaMemberghi:LutheranGardensMember2022-12-310001059142ghi:WillowPlaceApartmentsSupplementalMemberghi:McDonoughGeorgiaMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2023-12-310001059142us-gaap:SecuredDebtMemberghi:LiborMemberghi:BankUnitedGeneralMember2022-12-310001059142ghi:LegacyCommonsAtSignalHillsMemberghi:SaintPaulMinnesotaMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2022-01-012022-12-310001059142ghi:SanAntonioTexasMemberus-gaap:FirstMortgageMemberghi:AvistarAtOaksMember2023-12-310001059142ghi:BarclaysCapitalIncMemberghi:VariableNotesMemberghi:PoppyGroveIiGilMemberghi:TOBTrustsSecuritizationMember2023-12-310001059142ghi:AffordableMultifamilyMortgageRevenueBondInvestmentsSegmentMember2023-12-310001059142ghi:ParkAtViettiMemberghi:ThirdMortgageMemberghi:SpartanburgSouthCarolinaMemberghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2022-01-012022-12-310001059142stpr:NMghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberghi:SilverMoonMember2023-12-310001059142ghi:MortgageRevenueBondsMemberghi:ResidencyAtEmpireMemberghi:SeriesBBFourMemberghi:BurbankCaliforniaMember2022-12-310001059142stpr:CAghi:MortgageRevenueBondsHeldInTrustMemberghi:SantaFeApartmentsMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:TaxableGovernmentalIssuerLoansMemberghi:PoppyGroveOneMember2023-12-310001059142us-gaap:SeriesAPreferredStockMemberus-gaap:SubsequentEventMember2024-01-012024-01-310001059142ghi:WillowPlaceApartmentsMember2023-11-300001059142ghi:SeriesAPreferredUnitsIssuedOnOctoberTwoThousandSeventeenMember2023-12-310001059142ghi:TrustTwentyTwentyOneXFTwoThousandNineHundredAndThirtyNineMemberghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2023-01-012023-12-310001059142ghi:SanDiegoCaliforniaMemberghi:TheSuitesOnPaseoMember2022-12-310001059142ghi:SimiValleyCaliforniaMemberghi:HarmonyTerraceMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:MizuhoCapitalMarketsLLCMember2022-12-310001059142us-gaap:SeriesAPreferredStockMember2023-10-310001059142stpr:CAghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberghi:TylerParkTownhomesMember2023-12-310001059142ghi:AvistarPortfolio2Membersrt:OtherPropertyMember2022-12-310001059142ghi:PropertyLoansMemberghi:WillowPlaceApartmentsMember2023-12-310001059142ghi:TierThreeDistributionMemberghi:LimitedPartnerRestrictedAndUnrestrictedMember2023-01-012023-12-310001059142ghi:MortgageRevenueBondsMemberghi:JacksonMsMemberghi:JacksonManorApartmentsMember2023-11-012023-11-300001059142ghi:ScharbauerFlatsApartmentsGovernmentalIssuerLoanMember2023-11-012023-11-300001059142ghi:VillagePointMemberstpr:NJghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2023-01-012023-12-310001059142ghi:GreensOfPineGlenMember2023-12-310001059142ghi:OaksAtGeorgetownMemberghi:GeorgetownTexasMemberus-gaap:FirstMortgageMember2023-01-012023-12-310001059142ghi:PropertyLoansMemberghi:WillowPlaceApartmentsSupplementalMember2023-12-310001059142ghi:ResidencyAtMayerSeriesAMemberghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2023-12-310001059142ghi:GermantownTNMemberghi:VantageAtGermantownMember2022-01-012022-12-310001059142srt:MaximumMemberghi:OspreyVillageSupplementalAndWillowPlaceApartmentsMember2023-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MontecitoAtWilliamsRanchSeriesAMemberghi:MizuhoCapitalMarketsLLCMember2023-12-310001059142ghi:FullertonCaliforniaMemberghi:CourtyardMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:PropertyLoansMemberghi:WillowPlaceApartmentsSupplementalMemberus-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember2023-12-310001059142ghi:ResidencyAtEmpireMemberghi:BurbankCaliforniaMemberghi:SeriesBBOneMemberghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2022-12-310001059142ghi:MortgageRevenueBondsMemberghi:SeriesJFourMortgageMemberghi:TheResidencyAtEntrepreneurMember2022-04-300001059142us-gaap:FairValueInputsLevel2Member2022-12-310001059142ghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberstpr:TXghi:AvistarAtWilcrestMember2022-12-310001059142ghi:BakersfieldCaliforniaMemberghi:HarmonyCourtBakersfieldMemberus-gaap:FirstMortgageMember2022-01-012022-12-310001059142ghi:ConcordAtGulfgateMemberghi:HoustonTexasMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:VillageAtHanfordSquareMemberghi:SeriesHTMortgageMemberghi:MortgageRevenueBondsAndTaxableMortgageRevenueBondsMember2023-12-310001059142ghi:HoustonTexasMemberghi:AvistarAtCopperfieldMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:FourtyOnColonyMemberghi:SeriesPTMemberghi:MortgageRevenueBondsAndTaxableMortgageRevenueBondsMember2023-01-012023-12-310001059142ghi:PalmsAtPremierParkMembercountry:SCghi:MortgageRevenueBondsHeldInTrustMember2023-12-310001059142stpr:CAghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberghi:VillageAtMaderaMember2023-12-310001059142ghi:RenaissanceMemberghi:BatonRougeLouisianaMemberus-gaap:FirstMortgageMember2022-01-012022-12-310001059142ghi:SycamoreWalkMemberghi:BakersfieldCaliforniaMemberus-gaap:FirstMortgageMember2023-01-012023-12-310001059142ghi:VantageAtPowdersvilleMemberghi:PowdersvilleSCMember2023-08-012023-08-310001059142ghi:SanAntonioTexasMemberghi:FreestoneAtCrestaBellaMemberus-gaap:InvestmentsMember2022-12-310001059142ghi:MortgageRevenueBondsMember2023-12-310001059142ghi:FixedMThirtyThreeMemberghi:TaxExemptBondSecuritizationMember2023-12-310001059142ghi:HilltopAtSignalHillsMember2023-01-012023-12-3100010591422021-12-310001059142ghi:SimiValleyCaliforniaMemberghi:SeasonsAtSimiValleyMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:PropertyLoansMemberghi:WillowPlaceApartmentsSupplementalMember2023-01-012023-12-310001059142ghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberstpr:TXghi:AvistarAtWilcrestMember2023-12-310001059142us-gaap:SecuredDebtMemberghi:VariableNotesMember2022-01-012022-12-310001059142ghi:TomballTXMemberghi:VantageAtTomballMemberus-gaap:InvestmentsMember2023-12-310001059142ghi:MortgageRevenueBondAndTaxableMortgageRevenueBondInvestmentsMember2023-01-012023-12-310001059142ghi:BryanTexasMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMemberghi:SandyCreekApartmentsMember2023-12-310001059142ghi:MizuhoCapitalMarketsThreeMember2022-01-012022-12-310001059142ghi:WindsorShoresApartmentsMemberus-gaap:FirstMortgageMemberstpr:SCghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2023-12-310001059142ghi:AlbuquerqueNewMexicoMemberghi:VillageAtAvalonMember2022-01-012022-12-310001059142us-gaap:InterestRateSwaptionMember2023-01-012023-12-310001059142ghi:HoustonTexasMemberghi:ConcordAtWilliamcrestMemberus-gaap:FirstMortgageMember2023-12-310001059142stpr:WAghi:MortgageRevenueBondsHeldInTrustMemberghi:FifteenWestApartmentsMember2022-12-310001059142ghi:SeriesAPreferredUnitsIssuedOnMarchTwoThousandSixteenMember2023-01-012023-12-310001059142us-gaap:FairValueInputsLevel3Memberus-gaap:DerivativeFinancialInstrumentsAssetsMember2022-12-310001059142ghi:ResidencyAtTheEntrepreneurJOneMemberstpr:CAghi:MortgageRevenueBondsHeldInTrustMember2023-12-310001059142ghi:SeriesAPreferredUnitsAndSeriesA1PreferredUnitsMember2023-01-012023-12-310001059142ghi:TheIvyApartmentsMemberstpr:SCghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2023-01-012023-12-310001059142ghi:MizuhoCapitalMarketsOneMember2023-01-012023-12-310001059142us-gaap:GeneralPartnerMemberghi:OtherExpensesMember2022-12-310001059142ghi:SeriesJTMortgageMemberghi:TheResidencyAtEntrepreneurMemberghi:MortgageRevenueBondsAndTaxableMortgageRevenueBondsMember2023-12-310001059142stpr:CAghi:MortgageRevenueBondsHeldInTrustMemberghi:GlenviewApartmentsMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:SeriesAPreferredUnitsIssuedOnMarchTwoThousandSixteenMember2023-12-310001059142ghi:MaryaliceCircleApartmentsMemberstpr:GAghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2023-01-012023-12-310001059142stpr:CAghi:MortgageRevenueBondsMemberghi:SolanoVistaMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:MagnoliaHeightsMemberghi:SeniorConstructionFinancingMember2023-01-012023-12-310001059142ghi:The5050StudentHousingUNLMembersrt:OtherPropertyMember2023-12-310001059142ghi:LasPalmasTwoMemberghi:CoachellaCaliforniaMemberus-gaap:FirstMortgageMember2022-01-012022-12-310001059142ghi:ElkGroveCaMemberghi:PoppyGroveIIIMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2022-12-310001059142ghi:ScharbauerFlatsApartmentsMember2023-06-012023-06-300001059142ghi:GreensHoldCoMember2023-12-310001059142us-gaap:SecuredDebtMemberus-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:BankUnitedGeneralMember2023-01-012023-12-310001059142us-gaap:ResidentialMortgageMemberghi:AffordableMultifamilyMortgageRevenueBondInvestmentsSegmentMember2023-12-310001059142ghi:PoppyGroveIIIMemberghi:ElkGroveCaMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2022-01-012022-12-310001059142ghi:AtTheMarketOfferingMember2023-12-310001059142us-gaap:SecuredDebtMemberghi:BankUnitedGeneralMember2023-01-012023-12-310001059142ghi:CentennialCrossingsGilMember2023-09-012023-09-300001059142us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:TheResidencyAtEntrepreneurMemberghi:MortgageRevenueBondsAndTaxableMortgageRevenueBondsMemberghi:SeriesJFiveMortgageMember2023-12-310001059142stpr:TX2023-12-310001059142ghi:VantageAtCoventryMemberghi:OmahaNebraskaMember2023-01-012023-12-310001059142ghi:PropertyLoansMemberghi:SandyCreekApartmentsMember2023-12-310001059142ghi:LimitedPartnerRestrictedAndUnrestrictedMember2022-12-310001059142ghi:TaxableGovernmentalIssuerLoanMember2022-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:Live929Memberghi:MizuhoCapitalMarketsLLCMember2022-01-012022-12-310001059142ghi:SouthparkMemberghi:AustinTexasMember2023-01-012023-12-310001059142ghi:CapitalUnitsRestrictedAndUnrestrictedMember2023-01-012023-12-310001059142ghi:HeritageSquareMemberus-gaap:FirstMortgageMemberghi:EdinburgTexasMember2023-12-310001059142ghi:ConcordAtLittleYorkMemberghi:HoustonTexasMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:BurbankCaliforniaMemberghi:ResidencyAtEmpireBbTwoMember2023-12-310001059142ghi:TheParkAtSondrioSeriesTwoThousandTwentyTwoAMemberghi:GreenvilleSouthCarolinaMember2023-01-012023-12-310001059142ghi:MortgageRevenueBondsMemberus-gaap:SecondMortgageMemberghi:AvistarAtOaksMemberstpr:TX2022-12-310001059142ghi:WindsorShoresApartmentsMemberstpr:SCus-gaap:FirstMortgageMemberghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2023-01-012023-12-310001059142srt:MinimumMemberghi:RealEstateBuildingsMember2023-12-3100010591422022-01-310001059142ghi:SanAntonioTexasMemberghi:FreestoneAtCrestaBellaMemberus-gaap:InvestmentsMember2023-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMemberghi:OasisAtTwinLakesGilMember2022-01-012022-12-310001059142ghi:PropertyLoansMemberghi:WillowPlaceApartmentsMember2023-01-012023-12-310001059142stpr:TX2022-12-310001059142ghi:TheResidencyAtEntrepreneurMemberghi:MortgageRevenueBondsAndTaxableMortgageRevenueBondsMemberghi:SeriesJFiveMortgageMember2023-01-012023-12-310001059142ghi:SanAntonioTexasMemberghi:AvistarIn09Memberus-gaap:FirstMortgageMember2023-01-012023-12-310001059142ghi:SanDiegoCaliforniaMemberghi:CCBASeniorGardenApartmentsMember2023-01-012023-12-310001059142us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:SeriesJFourMortgageMemberghi:TheResidencyAtEntrepreneurMemberghi:MortgageRevenueBondsAndTaxableMortgageRevenueBondsMember2023-12-310001059142ghi:ConcordAtGulfgateMemberghi:HoustonTexasMemberus-gaap:FirstMortgageMember2023-01-012023-12-310001059142ghi:HeritageSquareMemberus-gaap:FirstMortgageMemberghi:EdinburgTexasMember2022-12-310001059142ghi:VillageAtHanfordSquareMemberghi:MortgageRevenueBondsMemberghi:SeriesHTMortgageMember2023-12-310001059142ghi:MortgageRevenueBondsMemberghi:DurhamNorthCarolinaMemberghi:LynnhavenApartmentsMember2022-01-012022-12-310001059142ghi:VancouverWashingtonMemberghi:FifteenWestApartmentsMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:HopeOnAvalonTaxableGilMemberghi:TOBTrustMemberus-gaap:SubsequentEventMember2024-01-012024-01-310001059142stpr:CAghi:ResidencyAtEmpireBbThreeMemberghi:MortgageRevenueBondsHeldInTrustMember2023-12-310001059142ghi:LiborMemberghi:CentennialCrossingsMemberghi:SeniorConstructionFinancingMember2022-12-310001059142ghi:TheSaffordMemberghi:MortgageRevenueBondsAndTaxableMortgageRevenueBondsMember2023-12-310001059142ghi:CameronParkCaliforniaMemberghi:GlenviewApartmentsMemberus-gaap:FirstMortgageMember2023-01-012023-12-310001059142stpr:CAghi:ResidencyAtTheEntrepreneurMemberghi:SeriesJThreeMortgageMemberghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2022-12-310001059142ghi:SanAntonioTexasMemberghi:AvistarIn09Memberus-gaap:FirstMortgageMember2022-12-310001059142srt:MaximumMemberghi:MizuhoCapitalMarketsFourMember2022-12-310001059142ghi:SeasonsSanJuanCapistranoMemberghi:SanJuanCapistranoCaliforniaMemberus-gaap:FirstMortgageMember2023-01-012023-12-310001059142ghi:PropertyLoansMemberghi:SandyCreekApartmentsMember2023-01-012023-12-310001059142ghi:TaxableBondsMember2022-12-310001059142ghi:MizuhoCapitalMarketsFourMember2023-12-310001059142ghi:MizuhoCapitalMarketsFourMember2022-12-310001059142us-gaap:FirstMortgageMemberghi:SanPabloCaliforniaMemberghi:MontevistaMember2022-01-012022-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:ResidencyAtTheEntrepreneurMrbsMemberghi:MizuhoCapitalMarketsLLCMember2023-12-310001059142stpr:CAghi:VineyardGardensMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:MagnoliaCrossingMember2022-09-012022-09-300001059142ghi:VariableMThirtyOneMemberghi:TaxExemptBondSecuritizationMember2023-01-012023-12-310001059142ghi:MortgageRevenueBondAndTaxableMortgageRevenueBondInvestmentsMember2022-01-012022-12-310001059142ghi:TaxableGovernmentalIssuerLoansMemberghi:PerformingMember2023-12-310001059142ghi:SanAntonioTexasMemberghi:AvistarPortfolioMemberus-gaap:SecondMortgageMember2022-12-310001059142ghi:MortgageRevenueBondsMemberghi:ResidencyAtEmpireMemberghi:BurbankCaliforniaMember2022-01-012022-12-310001059142ghi:FreestoneLaderaMemberghi:JointVentureInvestmentsMember2023-12-310001059142ghi:SeriesJOneMortgageMemberstpr:CAghi:ResidencyAtTheEntrepreneurMemberghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2022-12-310001059142ghi:SeriesJFourMortgageMemberghi:TheResidencyAtEntrepreneurMemberghi:MortgageRevenueBondsAndTaxableMortgageRevenueBondsMember2023-12-310001059142srt:MaximumMemberghi:GovernmentalIssuerLoansMemberghi:PoppyGroveTwoMember2023-12-310001059142ghi:SolaImpactOpportunityZoneFundOneMember2023-01-012023-12-310001059142ghi:SaintPaulMinnesotaMemberus-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:HilltopAtSignalHillsMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2022-12-310001059142ghi:BarclaysCapitalIncMemberghi:VariableNotesMemberghi:PoppyGroveIiGilMemberghi:TOBTrustsSecuritizationMember2022-01-012022-12-310001059142ghi:MaderaCaliforniaMemberus-gaap:FirstMortgageMemberghi:VillageAtMaderaMember2023-12-310001059142stpr:CAghi:MortgageRevenueBondsHeldInTrustMemberghi:LutheranGardensMember2023-12-310001059142ghi:Live929ApartmentsMemberghi:ThirdMortgageMemberghi:BaltimoreMdMember2022-01-012022-01-310001059142us-gaap:GeneralPartnerMemberghi:OfficeExpensesMember2023-12-310001059142stpr:CAghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberghi:MontclairApartmentsMember2022-12-310001059142ghi:FreestoneGreenvilleMemberghi:JointVentureInvestmentsMember2023-01-012023-12-310001059142ghi:WillowPlaceApartmentsSupplementalMemberghi:TOBTrustMemberus-gaap:SubsequentEventMember2024-02-220001059142ghi:FreestoneLaderaMemberghi:JointVentureInvestmentsMember2023-01-012023-12-310001059142ghi:MortgageRevenueBondsHeldInTrustMemberstpr:TXghi:BrutonApartmentsMember2023-12-310001059142ghi:CompanionAtThornHillApartmentsMemberghi:LexingtonSouthCarolinaMember2022-12-310001059142ghi:JointVentureInvestmentsMemberghi:VantageAtLovelandMember2023-01-012023-12-310001059142us-gaap:FairValueInputsLevel3Memberus-gaap:DerivativeFinancialInstrumentsAssetsMember2023-01-012023-12-310001059142ghi:JacksonMsMemberghi:JacksonManorApartmentsMember2022-12-310001059142ghi:FullertonCaliforniaMemberghi:CourtyardMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:TrustTwentyTwentyOneXFTwoThousandNineHundredAndThirtyNineMemberghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2022-01-012022-12-310001059142us-gaap:OperatingSegmentsMemberghi:AffordableMultifamilyMortgageRevenueBondInvestmentsSegmentMemberghi:NetResultFromDerivativeTransactionsMember2023-01-012023-12-310001059142stpr:CAghi:MortgageRevenueBondsHeldInTrustMemberghi:ResidencyAtTheEntrepreneurJTwoMember2023-12-310001059142ghi:TheResidencyAtEntrepreneurMemberghi:SeriesJThreeMortgageMemberghi:MortgageRevenueBondsAndTaxableMortgageRevenueBondsMember2023-12-310001059142ghi:WillowPlaceApartmentsSupplementalMemberus-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:TOBTrustMemberus-gaap:SubsequentEventMember2024-02-012024-02-220001059142us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:OspreyVillageMemberghi:SeniorConstructionFinancingMember2023-12-310001059142ghi:AvistarPortfolioMembersrt:OtherPropertyMember2023-12-310001059142ghi:GovernmentalIssuerLoansAndTaxableGovernmentalIssuerLoansMemberghi:PoppyGroveTwoMember2023-12-310001059142us-gaap:GeneralPartnerMemberghi:ReimbursableSalariesAndBenefitsMember2022-12-310001059142srt:MaximumMemberus-gaap:SecuredDebtMember2023-12-310001059142ghi:ConcordAtGulfgateMemberghi:HoustonTexasMemberus-gaap:FirstMortgageMember2022-01-012022-12-310001059142ghi:ResidencyAtMayerSeriesAMemberghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2022-12-310001059142us-gaap:SecuredDebtMember2022-12-310001059142us-gaap:OperatingSegmentsMemberghi:MarketRateJointVentureInvestmentsMember2022-12-310001059142ghi:CompanionAtThornHillApartmentsMemberghi:LexingtonSouthCarolinaMember2023-12-310001059142ghi:TaxableGovernmentalIssuerLoanMemberghi:HopeOfAvalonMember2023-07-012023-07-310001059142ghi:ResidencyAtEmpireMemberghi:SeriesBBThreeMemberghi:BurbankCaliforniaMemberghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2022-01-012022-12-310001059142ghi:RenaissanceMemberghi:MortgageRevenueBondsHeldInTrustMemberstpr:LAus-gaap:FirstMortgageMember2022-12-310001059142ghi:RenaissanceMemberghi:BatonRougeLouisianaMemberus-gaap:FirstMortgageMember2023-12-310001059142us-gaap:SecuredDebtMemberghi:BankUnitedNAAndBankersTrustCompanyMember2021-06-012021-06-300001059142ghi:TaxableGovernmentalIssuerLoansMemberghi:PoppyGroveTwoMember2023-01-012023-12-310001059142ghi:SeriesA1PreferredUnitsIssuedOnAprilTwoThousandTwentyTwoMember2023-01-012023-12-310001059142ghi:TheResidencyAtEmpireMemberghi:SeriesBbTMortgageMemberghi:MortgageRevenueBondsAndTaxableMortgageRevenueBondsMember2023-01-012023-12-310001059142ghi:RunnymedeMemberghi:MortgageRevenueBondsHeldInTrustMemberstpr:TX2022-12-310001059142ghi:SanAntonioTexasMemberghi:AvistarIn09Memberus-gaap:FirstMortgageMember2022-01-012022-12-310001059142ghi:MizuhoCapitalMarketsTenMember2023-01-012023-12-310001059142ghi:HeritageSquareMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberstpr:TX2022-12-310001059142ghi:TheJessamAtHaysFarmsMemberghi:HuntsvilleALMemberus-gaap:InvestmentsMember2023-01-012023-12-310001059142ghi:MortgageRevenueBondsMemberus-gaap:SecondMortgageMemberghi:AvistarAtParkwayMemberstpr:TX2023-12-310001059142ghi:GreensPropertyMember2023-01-012023-12-310001059142ghi:SouthparkMemberghi:MortgageRevenueBondMemberghi:TOBTrustMemberus-gaap:SubsequentEventMember2024-01-012024-01-310001059142ghi:VillageAtHanfordSquareMemberghi:SeriesHTMortgageMemberghi:MortgageRevenueBondsAndTaxableMortgageRevenueBondsMember2023-01-012023-12-310001059142ghi:ConcordAtLittleYorkMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberstpr:TX2022-12-310001059142ghi:TheResidencyAtEmpireMemberghi:MortgageRevenueBondsMemberghi:SeriesBbFourMortgageMember2023-12-310001059142ghi:TwoThousandAndTwentyThreeBeneficialUnitCertificatesDistributionMemberghi:BeneficialUnitCertificatesMember2023-12-132023-12-130001059142ghi:ProvisionCenter20141Memberghi:KnoxvilleTennesseeMember2022-12-310001059142ghi:ComptonCaMemberghi:LutheranGardensMember2022-01-012022-12-310001059142srt:MinimumMember2023-01-012023-12-310001059142ghi:DallasTexasMemberghi:BrutonApartmentsMember2022-01-012022-12-310001059142us-gaap:FairValueInputsLevel2Memberus-gaap:DerivativeMember2023-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMemberghi:MeadowValleyMember2023-01-012023-12-310001059142ghi:MizuhoCapitalMarketsSevenMember2023-12-310001059142ghi:MortgageRevenueBondsMemberghi:VillagePointMemberstpr:NJ2023-12-310001059142ghi:GovernmentalIssuerLoansAndTaxableGovernmentalIssuerLoansMemberghi:PoppyGroveOneMember2023-12-310001059142ghi:BurbankCaliforniaMemberghi:ResidencyAtEmpireBbTwoMember2023-01-012023-12-310001059142ghi:HoustonTexasMemberghi:AvistarAtCopperfieldMemberus-gaap:FirstMortgageMember2023-01-012023-12-310001059142ghi:Live929ApartmentsMember2023-12-310001059142ghi:OaksAtGeorgetownMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMemberstpr:TX2022-12-310001059142ghi:TOBTrustMemberus-gaap:SubsequentEventMember2024-01-012024-01-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMemberghi:AvistarAtWoodHollowSeriesAMember2023-01-012023-12-310001059142ghi:GreensPropertyMemberghi:MortgageRevenueBondsMemberus-gaap:SecondMortgageMemberghi:DurhamNorthCarolinaMember2023-12-310001059142ghi:SantaFeApartmentsMemberus-gaap:FirstMortgageMemberghi:HesperiaCaliforniaMember2022-01-012022-12-310001059142ghi:ConcordAtLittleYorkMemberghi:HoustonTexasMemberus-gaap:FirstMortgageMember2022-12-310001059142us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember2022-12-310001059142ghi:MeadowValleyMemberghi:MortgageRevenueBondMember2023-12-310001059142ghi:TheJessamAtHaysFarmsMember2023-07-310001059142ghi:TOBTrustsSecuritizationMember2023-12-310001059142ghi:BarclaysCapitalIncMemberghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:PoppyGroveIGilMember2023-12-310001059142ghi:SeriesJTMortgageMemberghi:MortgageRevenueBondsMemberghi:TheResidencyAtEntrepreneurMember2022-01-012022-12-310001059142ghi:Seriesa1PreferredunitsissuedonfebruarytwothousandtwentythreeMember2023-12-310001059142ghi:TheResidencyAtEntrepreneurMemberghi:SeriesJThreeMortgageMemberghi:MortgageRevenueBondsAndTaxableMortgageRevenueBondsMember2023-01-012023-12-3100010591422022-01-012022-12-310001059142ghi:SanAntonioTexasMemberghi:AvistarPortfolioMemberus-gaap:SecondMortgageMember2023-01-012023-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMemberghi:HopeOnAvalonGilMember2023-12-310001059142ghi:Live929ApartmentsMemberghi:BaltimoreMarylandMemberus-gaap:FirstMortgageMember2022-01-012022-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:Live929Memberghi:MizuhoCapitalMarketsLLCMember2023-01-012023-12-310001059142us-gaap:SifmaMunicipalSwapRateMemberghi:CentennialColoradoMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMemberghi:CentennialCrossingsMember2022-12-310001059142ghi:SanAntonioTexasMemberghi:AvistarPortfolioMemberus-gaap:SecondMortgageMember2022-01-012022-12-310001059142ghi:BeneficialUnitCertificatesMember2023-01-012023-12-310001059142ghi:MorganStanleyBankMemberghi:VillageAtAvalonMemberghi:TermTobTrustSecuritizationMember2023-12-310001059142ghi:MizuhoCapitalMarketsFiveMember2023-01-012023-12-310001059142us-gaap:SecuredDebtMemberghi:BankersTrustAcquisitionMemberus-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember2023-01-012023-12-310001059142ghi:LegacyCommonsAtSignalHillsMemberghi:SaintPaulMinnesotaMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMember2023-12-310001059142ghi:TotalReturnSwapOneMemberus-gaap:SecuredDebtMember2022-12-310001059142ghi:VillagePointMemberstpr:NJghi:MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember2023-12-310001059142ghi:MizuhoMember2023-12-310001059142ghi:SanAntonioTexasMemberus-gaap:FirstMortgageMemberghi:HeightsAtHeightsAtFiveHundredFifteenMember2023-12-310001059142ghi:WindsorShoresApartmentsMemberghi:ColumbiaSouthCarolinaMember2023-12-310001059142ghi:RunnymedeMemberghi:AustinTexasMember2023-01-012023-12-310001059142ghi:OasisAtTwinLakesMemberghi:SeniorConstructionFinancingMember2022-12-310001059142ghi:AvistarAtWilcrestSeriesAMemberghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2023-01-012023-12-310001059142stpr:CAghi:MortgageRevenueBondsHeldInTrustMemberghi:GlenviewApartmentsMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:Live929ApartmentsMembersrt:OtherPropertyMember2022-12-310001059142us-gaap:FairValueInputsLevel3Memberus-gaap:DerivativeMember2023-12-310001059142ghi:WaukeganIllinoisMemberghi:BrookstoneMember2023-12-310001059142stpr:CAghi:ResidencyAtEmpireBbOneMemberghi:MortgageRevenueBondsHeldInTrustMember2023-12-310001059142ghi:VantageAtCoventryMemberghi:OmahaNebraskaMemberus-gaap:InvestmentsMember2022-12-310001059142ghi:VariableNotesMemberghi:TrustTwentyTwentyOneXfTwoThousandNineHundredAndTwentySixMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMember2023-12-310001059142ghi:MizuhoCapitalMarketsFiveMember2022-12-310001059142stpr:TNghi:MortgageRevenueBondsHeldInTrustMemberghi:ArborsAtHickoryRidgeMember2022-12-310001059142ghi:LasPalmasTwoMemberghi:CoachellaCaliforniaMemberus-gaap:FirstMortgageMember2023-12-310001059142us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:WillowPlaceApartmentsMemberghi:SeniorConstructionFinancingMember2023-12-310001059142ghi:GreensHoldCoMember2022-01-012022-12-310001059142ghi:SeriesAPreferredUnitsIssuedOnAugustTwoThousandSeventeenMember2022-01-012022-12-310001059142us-gaap:SecuredDebtMemberus-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberghi:BankUnitedGeneralMember2023-12-310001059142ghi:SanAntonioTexasMemberus-gaap:FirstMortgageMemberghi:AvistarOnHillsMember2023-12-310001059142ghi:MizuhoMember2022-12-310001059142ghi:BarclaysCapitalIncMemberghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:TrustTwentyTwentyOneXfTwoThousandNineHundredAndFiftyThreeMember2023-12-310001059142ghi:HelotesTexasMemberghi:VantageAtHelotesMemberus-gaap:InvestmentsMember2022-12-310001059142srt:MaximumMemberus-gaap:InterestRateFloorMemberghi:GovernmentalIssuerLoansMember2023-12-310001059142us-gaap:GeneralPartnerMemberghi:InsuranceMember2022-12-310001059142ghi:TobTrustTwentyTwentyOneXfTwoThousandNineHundredAndTwentySixMemberghi:HopeOnAvalonTaxableGilMemberus-gaap:SubsequentEventMember2024-02-012024-02-220001059142us-gaap:EquityMethodInvestmentsMember2022-12-310001059142ghi:LosAngelesCaliforniaMemberghi:GovernmentalIssuerLoansMemberghi:TOBTrustMemberghi:HopeOnAvalonMember2022-01-012022-12-310001059142ghi:GovernmentalIssuerLoanMemberus-gaap:FairValueInputsLevel3Member2023-12-310001059142ghi:SanAntonioTexasMemberus-gaap:SecondMortgageMemberghi:AvistarAtParkwayMember2022-01-012022-12-310001059142ghi:SanAntonioTexasMemberghi:VantageAtWestoverHillsMember2022-01-012022-12-310001059142ghi:OcotilloSpringsMemberghi:BrawleyCAMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:GreenfieldCaliforniaMemberghi:TylerParkTownhomesMember2023-01-012023-12-310001059142ghi:MortgageRevenueBondsMembercountry:GAghi:HandselMorganVillageApartmentsMember2023-12-310001059142ghi:VariableNotesMemberghi:TOBTrustsSecuritizationMemberghi:MizuhoCapitalMarketsLLCMemberghi:OcotilloSpringsSeriesAMember2022-12-310001059142ghi:TaxableGovernmentalIssuerLoansMember2023-12-310001059142ghi:MortgageRevenueBondsMemberus-gaap:FairValueInputsLevel3Member2022-12-310001059142ghi:MeadowValleyMemberghi:GarfieldCharterTownshipMiMember2022-12-310001059142ghi:FixedMTwentyFourMemberghi:TaxExemptBondSecuritizationMember2022-12-310001059142ghi:The5050StudentHousingUNLMember2023-12-310001059142us-gaap:MortgagesMember2023-01-012023-12-310001059142ghi:AlbuquerqueNewMexicoMemberus-gaap:FirstMortgageMemberghi:SilverMoonMember2022-01-012022-12-310001059142ghi:HarmonyTerraceMemberghi:SimiValleyCaliforniaMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:SimiValleyCaliforniaMemberghi:SeasonsAtSimiValleyMemberus-gaap:FirstMortgageMember2023-01-012023-12-310001059142stpr:CAghi:HarmonyCourtBakersfieldMemberghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:FixedNotesMemberghi:TaxExemptBondSecuritizationResidualFinancingMember2023-12-310001059142ghi:GreerSouthCarolinaMemberghi:MortgageRevenueBondsMemberghi:BridleRidgeMember2022-12-310001059142ghi:LakewoodCaliforniaMemberghi:SeasonsLakewoodMemberus-gaap:FirstMortgageMember2022-12-310001059142ghi:MortgageRevenueBondsMemberghi:SeriesBbTMortgageMemberghi:ResidencyAtEmpireBbTwoMember2022-01-012022-12-310001059142ghi:SoledadCaliforniaMemberghi:SanVicenteMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:WillowRunMemberghi:ColumbiaSouthCarolinaMember2022-01-012022-12-310001059142ghi:The5050StudentHousingUNLAndTheSuitesOnPaseoMfPropertyMember2022-01-012022-12-310001059142ghi:ResidencyAtTheMayerMemberstpr:CAghi:MortgageRevenueBondsHeldInTrustMemberus-gaap:FirstMortgageMember2023-12-310001059142ghi:SolaImpactOpportunityZoneMember2023-01-012023-12-310001059142us-gaap:EarliestTaxYearMember2023-01-012023-12-310001059142ghi:VantageAtConroeMemberus-gaap:InvestmentsMemberghi:ConroeTXMember2022-12-310001059142ghi:MizuhoCapitalMarketsFourMember2023-01-012023-12-310001059142ghi:VantageAtConroeMemberghi:ConroeTXMember2023-01-012023-12-310001059142ghi:SanAntonioTexasMemberghi:VantageAtOConnorMember2022-01-012022-12-31xbrli:pureghi:Ratingghi:Propertyghi:Bediso4217:USDxbrli:sharesghi:Segmentghi:Loanghi:Securityghi:Entitiesxbrli:sharesghi:Preferredunitghi:Extensionghi:Projectsiso4217:USDghi:Unitghi:Financingghi:BeneficialUnitCertificates