| IRS990/AccountantCompileOrReviewInd | 0 | false |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 0 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 118094 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | false |
| IRS990/ActivityOrMissionDesc | 0 | NT GREEN FUND, INC. D/B/A REPURPOSE CAPITAL IS AN EMERGING COMMUNITY DEVELOPMENT FINANCIAL INSTITUTION ("CDFI") DEPLOYING LOAN FUNDS IN ECONOMICALLY MARGINALIZED PLACES THROUGHOUT THE U.S. ITS MISSION IS TO REINVEST IN ECONOMICALLY DISTRESSED PLACES BY PROVIDING FINANCING AND CAPACITY-BUILDING RESOURCES TO REACTIVATE PLACES AND IMPROVE OPPORTUNITY, LOCAL ECONOMIES, AND HEALTH. |
| IRS990/AllOtherContributionsAmt | 0 | 105250 |
| IRS990/AllOtherExpensesGrp/FundraisingAmt | 0 | 0 |
| IRS990/AllOtherExpensesGrp/ManagementAndGeneralAmt | 0 | 0 |
| IRS990/AllOtherExpensesGrp/ProgramServicesAmt | 0 | 0 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 0 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | true |
| IRS990/AuditCommitteeInd | 0 | true |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | DENISE WISE |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 2025886000 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 600 14TH ST NW SUITE 500 |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | WASHINGTON |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | DC |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 20005 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | false |
| IRS990/BusinessRlnWithFamMemInd | 0 | false |
| IRS990/BusinessRlnWithOrgMemInd | 0 | false |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 0 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 588823 |
| IRS990/ChangeToOrgDocumentsInd | 0 | false |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/CollectionsOfArtInd | 0 | false |
| IRS990/CompCurrentOfcrDirectorsGrp/FundraisingAmt | 0 | 102281 |
| IRS990/CompCurrentOfcrDirectorsGrp/ManagementAndGeneralAmt | 0 | 25570 |
| IRS990/CompCurrentOfcrDirectorsGrp/ProgramServicesAmt | 0 | 127852 |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 255703 |
| IRS990/CompensationFromOtherSrcsInd | 0 | false |
| IRS990/CompensationProcessCEOInd | 0 | true |
| IRS990/CompensationProcessOtherInd | 0 | false |
| IRS990/ConflictOfInterestPolicyInd | 0 | true |
| IRS990/ConservationEasementsInd | 0 | false |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | true |
| IRS990/CreditCounselingInd | 0 | false |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 1805250 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/CYInvestmentIncomeAmt | 0 | 5625 |
| IRS990/CYOtherExpensesAmt | 0 | 576213 |
| IRS990/CYOtherRevenueAmt | 0 | 0 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 10000 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 970729 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 273933 |
| IRS990/CYTotalExpensesAmt | 0 | 850146 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 227397 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 1820875 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | false |
| IRS990/DeductibleArtContributionInd | 0 | false |
| IRS990/DeductibleNonCashContriInd | 0 | false |
| IRS990/DelegationOfMgmtDutiesInd | 0 | false |
| IRS990/Desc | 0 | LENDING SERVICES: REPURPOSE CAPITAL FINANCES SMALL-SCALE ADAPTIVE REUSE AND RETROFIT PROJECTS IN DISINVESTED COMMUNITIES. IT BORROWS LENDING CAPITAL FROM PRIVATE FOUNDATIONS AND INVESTORS WHO ARE COMMITTED TO ITS MISSION AND SEEK SOCIAL AND ENVIRONMENTAL RETURNS. RPC ALSO SEEKS LENDING CAPITAL FROM COMMERCIAL BANKS WHO ARE REQUIRED TO MAKE LENDING CAPITAL AVAILABLE TO COMMUNITIES IN THEIR GEOGRAPHIC FOOTPRINT THAT THEY DO NOT SERVE, AS PART OF THEIR COMMUNITY REINVESTMENT ACT (CRA) OBLIGATIONS. |
| IRS990/DescribedInSection501c3Ind | 0 | true |
| IRS990/DisregardedEntityInd | 0 | false |
| IRS990/DocumentRetentionPolicyInd | 0 | true |
| IRS990/DoingBusinessAsName/BusinessNameLine1Txt | 0 | RePurpose Capital |
| IRS990/DonorAdvisedFundInd | 0 | false |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | false |
| IRS990/ElectionOfBoardMembersInd | 0 | false |
| IRS990/EmployeeCnt | 0 | 1 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | true |
| IRS990/EngagedInExcessBenefitTransInd | 0 | false |
| IRS990/EscrowAccountInd | 0 | false |
| IRS990/ExpenseAmt | 0 | 295872 |
| IRS990/FamilyOrBusinessRlnInd | 0 | false |
| IRS990/FederalGrantAuditRequiredInd | 0 | false |
| IRS990/FeesForServicesLegalGrp/ManagementAndGeneralAmt | 0 | 64311 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 64311 |
| IRS990/FeesForServicesOtherGrp/FundraisingAmt | 0 | 108001 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 156936 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 180643 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 445580 |
| IRS990/ForeignActivitiesInd | 0 | false |
| IRS990/ForeignFinancialAccountInd | 0 | false |
| IRS990/ForeignOfficeInd | 0 | false |
| IRS990/Form8282PropertyDisposedOfInd | 0 | false |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 0 | 0.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 1 | 0.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 2 | 0.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 3 | 0.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 4 | 0.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 5 | 0.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 6 | 0.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 7 | 38.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 8 | 0.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 2.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 2.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 2.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 2.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 2.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 2.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 2.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 2.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 40.0 |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 5 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 6 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 7 | 27463 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 8 | 822 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | John Mitterholzer |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | Kevin Daniels |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | Michael Pokorny |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | Camille Strachan |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | Darryl Young |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | Farshad Maltes |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | Teresa Jankovic |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | Denise Wise |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | Patrice Frey |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 8 | 72196 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 7 | 230083 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | Secretary |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | Chair |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | Treasurer |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | Director |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | Director |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | Director |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | Director |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | Assistant Treasurer |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | President & CEO (As of 10/24) |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | true |
| IRS990/FormationYr | 0 | 2024 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | false |
| IRS990/FSAuditedInd | 0 | true |
| IRS990/FundraisingActivitiesInd | 0 | false |
| IRS990/GainOrLossGrp/OtherAmt | 0 | 0 |
| IRS990/GainOrLossGrp/SecuritiesAmt | 0 | 0 |
| IRS990/GamingActivitiesInd | 0 | false |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 7 |
| IRS990/GrantAmt | 0 | 0 |
| IRS990/GrantsToIndividualsInd | 0 | false |
| IRS990/GrantsToOrganizationsInd | 0 | false |
| IRS990/GrantToRelatedPersonInd | 0 | false |
| IRS990/GrossReceiptsAmt | 0 | 1820875 |
| IRS990/GroupReturnForAffiliatesInd | 0 | false |
| IRS990/IncludeFIN48FootnoteInd | 0 | true |
| IRS990/IndependentAuditFinclStmtInd | 0 | true |
| IRS990/IndependentVotingMemberCnt | 0 | 7 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/IndoorTanningServicesInd | 0 | false |
| IRS990/InfoInScheduleOPartIXInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InformationTechnologyGrp/ManagementAndGeneralAmt | 0 | 1240 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 1240 |
| IRS990/InitialReturnInd | 0 | X |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 6903 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 6903 |
| IRS990/InterestGrp/ProgramServicesAmt | 0 | 3333 |
| IRS990/InterestGrp/TotalAmt | 0 | 3333 |
| IRS990/InvestmentIncomeGrp/RelatedOrExemptFuncIncomeAmt | 0 | 5625 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 5625 |
| IRS990/InvestmentInJointVentureInd | 0 | false |
| IRS990/InvestmentsOtherSecuritiesGrp/BOYAmt | 0 | 0 |
| IRS990/InvestmentsProgramRelatedGrp/BOYAmt | 0 | 0 |
| IRS990/IRPDocumentCnt | 0 | 0 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 0 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 0 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 0 |
| IRS990/LegalDomicileStateCd | 0 | DE |
| IRS990/LoanOutstandingInd | 0 | false |
| IRS990/LoansFromOfficersDirectorsGrp/EOYAmt | 0 | 0 |
| IRS990/LobbyingActivitiesInd | 0 | false |
| IRS990/LocalChaptersInd | 0 | false |
| IRS990/MaterialDiversionOrMisuseInd | 0 | false |
| IRS990/MembersOrStockholdersInd | 0 | false |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | true |
| IRS990/MinutesOfGoverningBodyInd | 0 | true |
| IRS990/MiscellaneousRevenueGrp/ExclusionAmt | 0 | 0 |
| IRS990/MiscellaneousRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 0 |
| IRS990/MiscellaneousRevenueGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/MiscellaneousRevenueGrp/UnrelatedBusinessRevenueAmt | 0 | 0 |
| IRS990/MissionDesc | 0 | NT GREEN FUND, INC. D/B/A REPURPOSE CAPITAL IS AN EMERGING COMMUNITY DEVELOPMENT FINANCIAL INSTITUTION ("CDFI") DEPLOYING LOAN FUNDS IN ECONOMICALLY MARGINALIZED PLACES THROUGHOUT THE U.S. ITS MISSION IS TO REINVEST IN ECONOMICALLY DISTRESSED PLACES BY PROVIDING FINANCING AND CAPACITY-BUILDING RESOURCES TO REACTIVATE PLACES AND IMPROVE OPPORTUNITY, LOCAL ECONOMIES, AND HEALTH. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | false |
| IRS990/MoreThan5000KToOrgInd | 0 | false |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 0 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 970729 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 0 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 970729 |
| IRS990/NondeductibleContributionsInd | 0 | false |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 1850 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 1850 |
| IRS990/OfficerMailingAddressInd | 0 | false |
| IRS990/OnBehalfOfIssuerInd | 0 | false |
| IRS990/OperateHospitalInd | 0 | false |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 0 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 0 |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 0 |
| IRS990/OtherExpensesGrp/Desc | 0 | Other Expenses |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 22627 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 22627 |
| IRS990/OtherLiabilitiesGrp/BOYAmt | 0 | 0 |
| IRS990/OtherLiabilitiesGrp/EOYAmt | 0 | 0 |
| IRS990/OtherRevenueTotalAmt | 0 | 0 |
| IRS990/PartialLiquidationInd | 0 | false |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | false |
| IRS990/PayrollTaxesGrp/FundraisingAmt | 0 | 7292 |
| IRS990/PayrollTaxesGrp/ManagementAndGeneralAmt | 0 | 1823 |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 9115 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 18230 |
| IRS990/PoliciesReferenceChaptersInd | 0 | false |
| IRS990/PoliticalCampaignActyInd | 0 | false |
| IRS990/PrincipalOfcrBusinessName/BusinessNameLine1Txt | 0 | PATRICE FREY |
| IRS990/ProfessionalFundraisingInd | 0 | false |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 0 | 900099 |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | CONTRACT SERVICES/TECHNICAL ASSISTANCE |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 10000 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 10000 |
| IRS990/ProgSrvcAccomActy2Grp/Desc | 0 | TECHNICAL ASSISTANCE: REPURPOSE CAPITAL WORKS WITH NEW AND EMERGING DEVELOPERS OF OLDER AND HISTORIC BUILDINGS TO HELP THEM WORK THROUGH THE MANY COMPLEXITIES OF BUILDING REHABILITATION, INCLUDING BUILDING CAPITAL STACKS, NAVIGATING THE LOAN APPLICATION PROCESS, ACCESSING MENTORS, AND MORE. |
| IRS990/ProgSrvcAccomActy2Grp/ExpenseAmt | 0 | 37350 |
| IRS990/ProgSrvcAccomActy2Grp/GrantAmt | 0 | 0 |
| IRS990/ProgSrvcAccomActy2Grp/RevenueAmt | 0 | 10000 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | false |
| IRS990/PYContributionsGrantsAmt | 0 | 0 |
| IRS990/PYExcessBenefitTransInd | 0 | false |
| IRS990/PYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/PYInvestmentIncomeAmt | 0 | 0 |
| IRS990/PYOtherExpensesAmt | 0 | 0 |
| IRS990/PYOtherRevenueAmt | 0 | 0 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 0 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | 0 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 0 |
| IRS990/PYTotalExpensesAmt | 0 | 0 |
| IRS990/PYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/PYTotalRevenueAmt | 0 | 0 |
| IRS990/QuidProQuoContributionsInd | 0 | false |
| IRS990/RcvblFromDisqualifiedPrsnGrp/EOYAmt | 0 | 0 |
| IRS990/RcvFndsToPayPrsnlBnftCntrctInd | 0 | false |
| IRS990/ReceivablesFromOfficersEtcGrp/EOYAmt | 0 | 0 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | 970729 |
| IRS990/RegularMonitoringEnfrcInd | 0 | true |
| IRS990/RelatedEntityInd | 0 | true |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | false |
| IRS990/RelatedOrganizationsAmt | 0 | 1700000 |
| IRS990/RentalIncomeOrLossGrp/PersonalAmt | 0 | 0 |
| IRS990/RentalIncomeOrLossGrp/RealAmt | 0 | 0 |
| IRS990/ReportInvestmentsOtherSecInd | 0 | false |
| IRS990/ReportLandBuildingEquipmentInd | 0 | false |
| IRS990/ReportOtherAssetsInd | 0 | false |
| IRS990/ReportOtherLiabilitiesInd | 0 | false |
| IRS990/ReportProgramRelatedInvstInd | 0 | false |
| IRS990/RevenueAmt | 0 | 5625 |
| IRS990/SavingsAndTempCashInvstGrp/BOYAmt | 0 | 0 |
| IRS990/SavingsAndTempCashInvstGrp/EOYAmt | 0 | 1500000 |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/Contribution35ControlledInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/ContributionControllerInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/ContributionFamilyInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/ControlledDisqualifiedPrsnInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/DisqualifiedPrsnControllIntInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/DisqualifiedPrsnOwnrIntInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/ExcessBusinessHoldingsRulesInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/ListedByNameGoverningDocInd | 0 | true |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/LoanDisqualifiedPersonInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/OrganizationChangeSuprtOrgInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/PaymentSubstantialContribtrInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/SupportedOrgNotOrganizedUSInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/SupportedOrgSectionC456Ind | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/SupportNonSupportedOrgInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/SuprtOrgNoIRSDeterminationInd | 0 | false |
| IRS990ScheduleA/Form990SchAType1SuprtOrgGrp/OperateBenefitNonSuprtOrgInd | 0 | false |
| IRS990ScheduleA/Form990SchAType1SuprtOrgGrp/PowerAppointMajorityDirTrstInd | 0 | true |
| IRS990ScheduleA/IRSWrittenDeterminationInd | 0 | X |
| IRS990ScheduleA/OtherSupportSumAmt | 0 | 69610 |
| IRS990ScheduleA/SupportedOrganizationsCnt | 0 | 1 |
| IRS990ScheduleA/SupportedOrganizationsTotalCnt | 0 | 1 |
| IRS990ScheduleA/SupportedOrgInformationGrp/EIN | 0 | 530210807 |
| IRS990ScheduleA/SupportedOrgInformationGrp/GoverningDocumentListedInd | 0 | true |
| IRS990ScheduleA/SupportedOrgInformationGrp/OrganizationTypeCd | 0 | 7 |
| IRS990ScheduleA/SupportedOrgInformationGrp/OtherSupportAmt | 0 | 69610 |
| IRS990ScheduleA/SupportedOrgInformationGrp/SupportAmt | 0 | 1700000 |
| IRS990ScheduleA/SupportedOrgInformationGrp/SupportedOrganizationName/BusinessNameLine1Txt | 0 | National Trust for Historic Preservation in the United States |
| IRS990ScheduleA/SupportingOrganization509a3Ind | 0 | X |
| IRS990ScheduleA/SupportingOrgType1Ind | 0 | X |
| IRS990ScheduleA/SupportSumAmt | 0 | 1700000 |
| IRS990ScheduleB/ContributorInformationGrp/ContributorBusinessName/BusinessNameLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorNum | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine2 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/City | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/State | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/ZIPCode | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/TotalContributionsAmt | 0 | RESTRICTED |
| IRS990/ScheduleBRequiredInd | 0 | true |
| IRS990ScheduleD/ExpensesNotReportedAmt | 0 | 0 |
| IRS990ScheduleD/ExpensesNotRptFinclStmtAmt | 0 | 0 |
| IRS990ScheduleD/ExpensesSubtotalAmt | 0 | 850146 |
| IRS990ScheduleD/FootnoteTextInd | 0 | X |
| IRS990ScheduleD/OtherExpensesIncludedAmt | 0 | 0 |
| IRS990ScheduleD/OtherExpensesNotIncludedAmt | 0 | 0 |
| IRS990ScheduleD/OtherRevenueAmt | 0 | 0 |
| IRS990ScheduleD/OtherRevenuesNotIncludedAmt | 0 | 0 |
| IRS990ScheduleD/RevenueNotReportedAmt | 0 | 0 |
| IRS990ScheduleD/RevenueNotReportedFinclStmtAmt | 0 | 0 |
| IRS990ScheduleD/RevenueSubtotalAmt | 0 | 1820875 |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 0 | NT GREEN FUND, INC. IS EXEMPT FROM FEDERAL INCOME TAXES UNDER SECTION 501(C)(3) OF THE INTERNAL REVENUE CODE (IRC). IN ACCORDANCE WITH FINANCIAL ACCOUNTING STANDARDS BOARD (FASB) ACCOUNTING STANDARDS CODIFICATION (ASC) 740: INCOME TAXES, NT GREEN FUND, INC. RECOGNIZES TAX LIABILITIES FOR UNCERTAIN TAX POSITIONS WHEN IT IS MORE LIKELY THAN NOT THAT A TAX POSITION WILL NOT BE SUSTAINED UPON EXAMINATION AND SETTLEMENT WITH VARIOUS TAXING AUTHORITIES. LIABILITIES FOR UNCERTAIN TAX POSITIONS ARE MEASURED BASED UPON THE LARGEST AMOUNT OF BENEFIT THAT IS GREATER THAN 50% LIKELY OF BEING REALIZED UPON SETTLEMENT. THE GUIDANCE ON ACCOUNTING FOR UNCERTAINTY IN INCOME TAXES ALSO ADDRESSES DE-RECOGNITION, CLASSIFICATION, INTEREST AND PENALTIES ON INCOME TAXES, AND ACCOUNTING IN INTERIM PERIODS. MANAGEMENT HAS EVALUATED THE TAX POSITIONS AND HAS CONCLUDED THAT THE NT GREEN FUND, INC. HAS TAKEN NO UNCERTAIN TAX POSITIONS THAT REQUIRE ADJUSTMENT TO THE FINANCIAL STATEMENTS TO COMPLY WITH THE PROVISIONS OF THIS GUIDANCE. |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | Schedule D, Part X, Line 2 FIN 48 (ASC 740) footnote |
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| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | THE EXECUTIVE COMMITTEE OF THE BOARD OF DIRECTORS CONSISTS OF THE CHAIR, SECRETARY, AND TREASURER. THE EXECUTIVE COMMITTEE SHALL HAVE AND EXERCISE ALL THE POWERS OF THE BOARD OF DIRECTORS BETWEEN THE MEETINGS OF THE BOARD OF DIRECTORS, SUBJECT TO GENERAL POLICIES ESTABLISHED BY THE BOARD, EXCEPT THAT THE FULL BOARD OF DIRECTORS SHALL RETAIN EXCLUSIVE AUTHORITY TO AMEND THE BYLAWS, TO EXERCISE THE BOARD'S AUTHORITY TO FILL TEMPORARY VACANCIES ON THE BOARD, AND TO ELECT THE CHAIR OF THE ORGANIZATION. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | THE FORM 990 IS PREPARED BY THE INDEPENDENT ACCOUNTING FIRM BDO USA AND REVIEWED BY MANAGEMENT. THE DRAFT IS THEN MADE AVAILABLE TO THE BOARD MEMBERS. ANY CHANGES FOLLOWING THESE REVIEWS ARE AGAIN REVIEWED BY BDO USA BEFORE THE FINAL 990 IS FILED. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 2 | THE ORGANIZATION'S CONFLICT OF INTEREST POLICY IS SENT TO THE BOARD MEMBERS ONCE A YEAR WITH A DISCLOSURE FORM THAT ASKS DIRECTORS TO DESCRIBE INTEREST IN OR RELATIONSHIPS WITH BOTH FOR-PROFIT AND NON-PROFIT ENTITIES AND TO DESCRIBE ANY TRANSACTIONS (DIRECT OR INDIRECT) WITH THE ORGANIZATION. DIRECTORS ARE ALSO REQUIRED TO DISCLOSE ANNUALLY ANY BUSINESS OR FAMILY RELATIONSHIPS WITH OTHER DIRECTORS AND WITH OFFICERS AND KEY EMPLOYEES OF THE ORGANIZATION (IDENTIFIED BY NAME), CONSISTENT WITH THE DISCLOSURE OBLIGATION OF PART VI, LINE 2. DIRECTORS ARE REGULARLY REMINDED OF THEIR OBLIGATION UNDER THE POLICY FOR POTENTIAL TRANSACTIONS. THE POLICY ALSO PROVIDES A PROCESS FOR REVIEW OF POTENTIAL CONFLICTS. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 3 | THE ORGANIZATION'S COMPENSATION COMMITTEE, MADE UP OF INDEPENDENT MEMBERS AND REPRESENTING THE EXECUTIVE COMMITTEE OF THE BOARD, COMMISSIONED AN OUTSIDE COMPENSATION FIRM TO CONDUCT A SALARY SURVEY FOR THE POSITION OF PRESIDENT AND CEO AND MADE A RECOMMENDATION TO THE COMPENSATION COMMITTEE WHO APPROVED THE RECOMMENDATION. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 4 | THE ORGANIZATION MAKES THESE DOCUMENTS AVAILABLE UPON REQUEST. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 5 | Development Consulting - Total Expense: 122108, Program Service Expense: 122108, Management and General Expenses: 0, Fundraising Expenses: 0; CDFI Startup Consulting and Underwriting Services - Total Expense: 104266, Program Service Expense: 42500, Management and General Expenses: 61766, Fundraising Expenses: 0; Fundraising Support - Total Expense: 90001, Program Service Expense: 0, Management and General Expenses: 0, Fundraising Expenses: 90001; Fractional Chief Financial Officer - Total Expense: 24000, Program Service Expense: 12000, Management and General Expenses: 12000, Fundraising Expenses: 0; GGRF Application Support - Total Expense: 18000, Program Service Expense: 0, Management and General Expenses: 0, Fundraising Expenses: 18000; Website/Graphic Design - Total Expense: 8813, Program Service Expense: 0, Management and General Expenses: 8813, Fundraising Expenses: 0; Compensation Study - Total Expense: 6581, Program Service Expense: 0, Management and General Expenses: 6581, Fundraising Expenses: 0; Other misc. services - Total Expense: 71811, Program Service Expense: 4035, Management and General Expenses: 67776, Fundraising Expenses: ; |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | Form 990, Part VI, Line 1a |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | Form 990, Part VI, Line 11b Review of form 990 by governing body |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | Form 990, Part VI, Line 12c Conflict of interest policy |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 3 | Form 990, Part VI, Line 15a Process to establish compensation of top management official |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 4 | Form 990, Part VI, Line 19 Required documents available to the public |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 5 | Form 990, Part IX, Line 11g Other Fees |
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