| IRS990/AccountantCompileOrReviewInd | 0 | 0 |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 75129 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 146178 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 2422 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | THE PRIMARY EXEMPT PURPOSE OF TERRAFIRMA IS TO OPERATE AS A QUALIFIED CHARITABLE RISK POOL PURSUANT TO I.R.C. SECTION 501(N). |
| IRS990/AddressChangeInd | 0 | X |
| IRS990/AdvertisingGrp/ManagementAndGeneralAmt | 0 | 2059 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 2059 |
| IRS990/AllOtherContributionsAmt | 0 | 800 |
| IRS990/AllOtherExpensesGrp/ManagementAndGeneralAmt | 0 | 5502 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 5502 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | 1 |
| IRS990/AuditCommitteeInd | 0 | 1 |
| IRS990/BackupWthldComplianceInd | 0 | 1 |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | MARSH MANAGEMENT SERVICES INC |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 8028645599 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 463 MOUNTAIN VIEW DR SUITE 301 |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | COLCHESTER |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | VT |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 05446 |
| IRS990/BusinessRlnWithFamMemInd | 0 | 0 |
| IRS990/BusinessRlnWithOfficerEntInd | 0 | 0 |
| IRS990/BusinessRlnWithOrgMemInd | 0 | 0 |
| IRS990/CapStkTrPrinCurrentFundsGrp/BOYAmt | 0 | 0 |
| IRS990/CapStkTrPrinCurrentFundsGrp/EOYAmt | 0 | 0 |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 61675 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 402750 |
| IRS990/ChangeToOrgDocumentsInd | 0 | 0 |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 1 |
| IRS990/CollectionsOfArtInd | 0 | 0 |
| IRS990/CompensationFromOtherSrcsInd | 0 | 0 |
| IRS990/CompensationProcessCEOInd | 0 | 0 |
| IRS990/CompensationProcessOtherInd | 0 | 0 |
| IRS990/ConferencesMeetingsGrp/ManagementAndGeneralAmt | 0 | 20182 |
| IRS990/ConferencesMeetingsGrp/TotalAmt | 0 | 20182 |
| IRS990/ConflictOfInterestPolicyInd | 0 | 1 |
| IRS990/ConservationEasementsInd | 0 | 0 |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | 0 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 0 | 215000 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 0 | 1250 H ST NW SUITE 600 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 0 | WASHINGTON |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 0 | DC |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 0 | 20005 |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 0 | ALLIANCE RISK MANAGEMENT SERVICES LLC |
| IRS990/ContractorCompensationGrp/ServicesDesc | 0 | MANAGEMENT & OVERSIGHT |
| IRS990/CreditCounselingInd | 0 | 0 |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 800 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/CYInvestmentIncomeAmt | 0 | 167725 |
| IRS990/CYOtherExpensesAmt | 0 | 1465973 |
| IRS990/CYOtherRevenueAmt | 0 | 0 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 1510426 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 212978 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 0 |
| IRS990/CYTotalExpensesAmt | 0 | 1465973 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 0 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 1678951 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | 1 |
| IRS990/DeductibleArtContributionInd | 0 | 0 |
| IRS990/DeductibleNonCashContriInd | 0 | 0 |
| IRS990/DeferredRevenueGrp/BOYAmt | 0 | 263190 |
| IRS990/DeferredRevenueGrp/EOYAmt | 0 | 276047 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 1 |
| IRS990/Desc | 0 | THE PRIMARY PURPOSE OF TERRAFIRMA IS TO OPERATE AS A QUALIFIED CHARITABLE RISK POOL PURSUANT TO I.R.C. SECTION 501(N), ORGANIZED AND OPERATED TO POOL AND INSURE THE INSURANCE RISKS OF ITS MEMBERS AND TO PROVIDE INFORMATION TO ITS MEMBERS WITH RESPECT TO LOSS CONTROL AND RISK MANAGEMENT. EACH MEMBER OF SUCH POOL SHALL AT ALL TIMES BE AN ORGANIZATION DESCRIBED IN SECTION 501(C)(3) AND EXEMPT FROM INCOME TAX UNDER SECTION 501(A). FUNDAMENTALY, TERRAFIRMA IS DESIGNED TO PROVIDE A SAFETY NET FOR A CHARITABLE LAND TRUST FROM CATASTROPHIC LEGAL EXPENSES AND PROVIDE THE CONFIDENCE AND CAPABILITY TO UPHOLD OUR CONSERVATION OBLIGATIONS FOREVER. HOWEVER, TERRAFIRMA WILL ALSO OFFER LOSS PREVENTION AND RISK MANAGEMENT SERVICES TO ITS MEMBERS THROUGH ALLIANCE RISK MANAGEMENT SERVICES, LLC (ARMS), A WHOLLY OWNED SUBSIDIARY OF THE LAND TRUST ALLIANCE, INC. AND THE MANAGER OF TERRAFIRMA WILL ALSO PROVIDE FREE CLAIMS ASSISTANCE TO LAND TRUSTS AND EARLY ADVICE TO ASSIST DISPUTE RESOLUTION AND AVOID UNNECESSARY LITIGATION. |
| IRS990/DescribedInSection501c3Ind | 0 | 1 |
| IRS990/DisregardedEntityInd | 0 | 0 |
| IRS990/DocumentRetentionPolicyInd | 0 | 1 |
| IRS990/DonorAdvisedFundInd | 0 | 0 |
| IRS990/ElectionOfBoardMembersInd | 0 | 1 |
| IRS990/EmployeeCnt | 0 | 0 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | 0 |
| IRS990/ExpenseAmt | 0 | 994002 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 0 |
| IRS990/FederalGrantAuditRequiredInd | 0 | 0 |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 18946 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 18946 |
| IRS990/FeesForServicesLegalGrp/ManagementAndGeneralAmt | 0 | 34488 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 34488 |
| IRS990/FeesForServicesManagementGrp/ManagementAndGeneralAmt | 0 | 304600 |
| IRS990/FeesForServicesManagementGrp/TotalAmt | 0 | 304600 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 6500 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 6500 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/ManagementAndGeneralAmt | 0 | 27309 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/TotalAmt | 0 | 27309 |
| IRS990/ForeignActivitiesInd | 0 | 0 |
| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 11 | 20.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 12 | 10.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 13 | 10.00 |
| 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/IndividualTrusteeOrDirectorInd | 7 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 8 | 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 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 13 | 0 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | MARLENE FRISBIE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | CURT GLEAVES |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | WILLIAM G HASUERMAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | HARRY POLLACK |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | DEREK SCHAEFER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | GRANT SMITH |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | LAURIE SMITH |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | MICHELLE SMITH |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | DEBORAH STANLEY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | ANDREW BOWMAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | RENEE KIVIKKO |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | LESLIE RATLEY-BEACH |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | CHASE WARDEN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 13 | MARILYN AYRES |
| 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 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 13 | 0 |
| 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 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 13 | 0 |
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| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | MEMBERS COMMITTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | MEMBERS COMMITTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | MEMBERS COMMITTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | MEMBERS COMMITTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | MEMBERS COMMITTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | MEMBERS COMMITTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | MEMBERS COMMITTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | MEMBERS COMMITTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | PRESIDENT - ARMS |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | VICE PRESIDENT - ARMS FROM 5/2018 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | VICE PRESIDENT & SECRETARY - ARMS |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | TREASURER - ARMS FROM 5/2018 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 13 | TREASURER - ARMS THRU 5/2018 |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | 1 |
| IRS990/FormationYr | 0 | 2011 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 0 |
| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | 1 |
| IRS990/FundraisingActivitiesInd | 0 | 0 |
| IRS990/GainOrLossGrp/SecuritiesAmt | 0 | 16742 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 9 |
| IRS990/GrantsToIndividualsInd | 0 | 0 |
| IRS990/GrantsToOrganizationsInd | 0 | 0 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
| IRS990/GrossAmountSalesAssetsGrp/SecuritiesAmt | 0 | 3407147 |
| IRS990/GrossReceiptsAmt | 0 | 5069356 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 1 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 1 |
| IRS990/IndependentVotingMemberCnt | 0 | 9 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartIIIInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InformationTechnologyGrp/ManagementAndGeneralAmt | 0 | 12280 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 12280 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 28445 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 28445 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 150983 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 150983 |
| IRS990/InvestmentInJointVentureInd | 0 | 0 |
| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 6523865 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 6780266 |
| IRS990/IRPDocumentCnt | 0 | 28 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 83406 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 0 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 0 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 83406 |
| IRS990/LegalDomicileStateCd | 0 | VT |
| IRS990/LessCostOthBasisSalesExpnssGrp/SecuritiesAmt | 0 | 3390405 |
| IRS990/LoanOutstandingInd | 0 | 0 |
| IRS990/LobbyingActivitiesInd | 0 | 0 |
| IRS990/LocalChaptersInd | 0 | 0 |
| IRS990/MaterialDiversionOrMisuseInd | 0 | 0 |
| IRS990/MembersOrStockholdersInd | 0 | 1 |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | 1 |
| IRS990/MinutesOfGoverningBodyInd | 0 | 1 |
| IRS990/MissionDesc | 0 | THE PRIMARY EXEMPT PURPOSE OF TERRAFIRMA IS TO OPERATE AS A QUALIFIEDCHARITABLE RISK POOL PURSUANT TO I.R.C. SECTION 501(N). |
| IRS990/MoreThan5000KToIndividualsInd | 0 | 0 |
| IRS990/MoreThan5000KToOrgInd | 0 | 0 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 4854188 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 4920352 |
| IRS990/NetGainOrLossInvestmentsGrp/ExclusionAmt | 0 | 16742 |
| IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt | 0 | 16742 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | -146814 |
| IRS990/NoListedPersonsCompensatedInd | 0 | X |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 377 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 377 |
| IRS990/OfficerMailingAddressInd | 0 | 0 |
| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrgDoesNotFollowSFAS117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 29277 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 32282 |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 0 |
| IRS990/OtherExpensesGrp/Desc | 0 | INSURANCE LOSSES |
| IRS990/OtherExpensesGrp/Desc | 1 | PREMIUM TAX |
| IRS990/OtherExpensesGrp/Desc | 2 | REGULATORY & LICENSING |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 11283 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 946773 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 47229 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 946773 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 47229 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 11283 |
| IRS990/OtherLiabilitiesGrp/BOYAmt | 0 | 1607971 |
| IRS990/OtherLiabilitiesGrp/EOYAmt | 0 | 2197417 |
| IRS990/OtherOrganizationDsc | 0 | LLC |
| IRS990/OwnWebsiteInd | 0 | X |
| IRS990/PartialLiquidationInd | 0 | 0 |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | 0 |
| IRS990/PdInCapSrplsLandBldgEqpFundGrp/BOYAmt | 0 | 4255100 |
| IRS990/PdInCapSrplsLandBldgEqpFundGrp/EOYAmt | 0 | 4255900 |
| IRS990/PoliticalCampaignActyInd | 0 | 0 |
| IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt | 0 | 7601 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 10017 |
| IRS990/PrincipalOfficerNm | 0 | LESLIE RATLEY-BEACH |
| IRS990/ProfessionalFundraisingInd | 0 | 0 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 0 | 524298 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 1 | 524298 |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | EARNED PREMIUMS |
| IRS990/ProgramServiceRevenueGrp/Desc | 1 | REGISTRATION FEES |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 1505901 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 1 | 4525 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 1505901 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 1 | 4525 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | 0 |
| IRS990/PYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/PYContributionsGrantsAmt | 0 | 2500 |
| IRS990/PYExcessBenefitTransInd | 0 | 0 |
| IRS990/PYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/PYInvestmentIncomeAmt | 0 | 139618 |
| IRS990/PYOtherExpensesAmt | 0 | 1403258 |
| IRS990/PYOtherRevenueAmt | 0 | 0 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 1383990 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | 122850 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 0 |
| IRS990/PYTotalExpensesAmt | 0 | 1403258 |
| IRS990/PYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/PYTotalRevenueAmt | 0 | 1526108 |
| IRS990/QuidProQuoContributionsInd | 0 | 0 |
| IRS990/RcvFndsToPayPrsnlBnftCntrctInd | 0 | 0 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | 212978 |
| IRS990/RegularMonitoringEnfrcInd | 0 | 1 |
| IRS990/RelatedEntityInd | 0 | 0 |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | 0 |
| IRS990/ReportInvestmentsOtherSecInd | 0 | 0 |
| IRS990/ReportLandBuildingEquipmentInd | 0 | 1 |
| IRS990/ReportOtherAssetsInd | 0 | 0 |
| IRS990/ReportOtherLiabilitiesInd | 0 | 1 |
| IRS990/ReportProgramRelatedInvstInd | 0 | 0 |
| IRS990/RevenueAmt | 0 | 1510426 |
| IRS990/RtnEarnEndowmentIncmOthFndsGrp/BOYAmt | 0 | 599088 |
| IRS990/RtnEarnEndowmentIncmOthFndsGrp/EOYAmt | 0 | 664452 |
| IRS990/SavingsAndTempCashInvstGrp/BOYAmt | 0 | 178060 |
| IRS990/SavingsAndTempCashInvstGrp/EOYAmt | 0 | 312257 |
| IRS990ScheduleA/AmountsRcvdDsqlfyPersonGrp/TotalAmt | 0 | 0 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearAmt | 0 | 800 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus1YearAmt | 0 | 2500 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus2YearsAmt | 0 | 1600 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus3YearsAmt | 0 | 2300 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus4YearsAmt | 0 | 800 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/TotalAmt | 0 | 8000 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearAmt | 0 | 150983 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus1YearAmt | 0 | 111343 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus2YearsAmt | 0 | 88587 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus3YearsAmt | 0 | 60394 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus4YearsAmt | 0 | 31161 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/TotalAmt | 0 | 442468 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearAmt | 0 | 1510426 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus1YearAmt | 0 | 1383990 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus2YearsAmt | 0 | 1299587 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus3YearsAmt | 0 | 1204417 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus4YearsAmt | 0 | 1101892 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/TotalAmt | 0 | 6500312 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearAmt | 0 | 150983 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearMinus1YearAmt | 0 | 111343 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearMinus2YearsAmt | 0 | 88587 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearMinus3YearsAmt | 0 | 60394 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearMinus4YearsAmt | 0 | 31161 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/TotalAmt | 0 | 442468 |
| IRS990ScheduleA/InvestmentIncomeCYPct | 0 | 0.06370 |
| IRS990ScheduleA/InvestmentIncomePYPct | 0 | 0.05070 |
| IRS990ScheduleA/PubliclySupportedOrg509a2Ind | 0 | X |
| IRS990ScheduleA/PublicSupportCY509Pct | 0 | 0.90210 |
| IRS990ScheduleA/PublicSupportPY509Pct | 0 | 0.91860 |
| IRS990ScheduleA/PublicSupportTotal509Amt | 0 | 6270074 |
| IRS990ScheduleA/SubstAndDsqlfyPrsnsTotGrp/CurrentTaxYearAmt | 0 | 48062 |
| IRS990ScheduleA/SubstAndDsqlfyPrsnsTotGrp/CurrentTaxYearMinus1YearAmt | 0 | 45568 |
| IRS990ScheduleA/SubstAndDsqlfyPrsnsTotGrp/CurrentTaxYearMinus2YearsAmt | 0 | 49710 |
| IRS990ScheduleA/SubstAndDsqlfyPrsnsTotGrp/CurrentTaxYearMinus3YearsAmt | 0 | 42263 |
| IRS990ScheduleA/SubstAndDsqlfyPrsnsTotGrp/CurrentTaxYearMinus4YearsAmt | 0 | 52635 |
| IRS990ScheduleA/SubstAndDsqlfyPrsnsTotGrp/TotalAmt | 0 | 238238 |
| IRS990ScheduleA/SubstantialContributorsAmtGrp/CurrentTaxYearAmt | 0 | 48062 |
| IRS990ScheduleA/SubstantialContributorsAmtGrp/CurrentTaxYearMinus1YearAmt | 0 | 45568 |
| IRS990ScheduleA/SubstantialContributorsAmtGrp/CurrentTaxYearMinus2YearsAmt | 0 | 49710 |
| IRS990ScheduleA/SubstantialContributorsAmtGrp/CurrentTaxYearMinus3YearsAmt | 0 | 42263 |
| IRS990ScheduleA/SubstantialContributorsAmtGrp/CurrentTaxYearMinus4YearsAmt | 0 | 52635 |
| IRS990ScheduleA/SubstantialContributorsAmtGrp/TotalAmt | 0 | 238238 |
| IRS990ScheduleA/ThirtyThrPctSuprtTestsCY509Ind | 0 | X |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearAmt | 0 | 1511226 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus1YearAmt | 0 | 1386490 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus2YearsAmt | 0 | 1301187 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus3YearsAmt | 0 | 1206717 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus4YearsAmt | 0 | 1102692 |
| IRS990ScheduleA/Total509Grp/TotalAmt | 0 | 6508312 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearAmt | 0 | 1662209 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus1YearAmt | 0 | 1497833 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus2YearsAmt | 0 | 1389774 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus3YearsAmt | 0 | 1267111 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus4YearsAmt | 0 | 1133853 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/TotalAmt | 0 | 6950780 |
| IRS990/ScheduleBRequiredInd | 0 | 0 |
| IRS990ScheduleD/ExpensesNotReportedAmt | 0 | 0 |
| IRS990ScheduleD/ExpensesNotRptFinclStmtAmt | 0 | 27309 |
| IRS990ScheduleD/ExpensesSubtotalAmt | 0 | 1438664 |
| IRS990ScheduleD/FootnoteTextInd | 0 | X |
| IRS990ScheduleD/InvestmentExpensesNotIncld2Amt | 0 | 27309 |
| IRS990ScheduleD/InvestmentExpensesNotIncldAmt | 0 | 27309 |
| IRS990ScheduleD/NetUnrealizedGainsInvstAmt | 0 | -146814 |
| IRS990ScheduleD/OtherLandBuildingsGrp/BookValueAmt | 0 | 0 |
| IRS990ScheduleD/OtherLandBuildingsGrp/DepreciationAmt | 0 | 83406 |
| IRS990ScheduleD/OtherLandBuildingsGrp/OtherCostOrOtherBasisAmt | 0 | 83406 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Amt | 0 | 2197417 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Desc | 0 | UNPAID LOSSES & LOSS ADJUSTMENT EXPENSES |
| IRS990ScheduleD/OtherRevenuesNotIncludedAmt | 0 | 800 |
| IRS990ScheduleD/RevenueNotReportedAmt | 0 | -146814 |
| IRS990ScheduleD/RevenueNotReportedFinclStmtAmt | 0 | 28109 |
| IRS990ScheduleD/RevenueSubtotalAmt | 0 | 1650842 |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 0 | TERRAFIRMA HAS NOT TAKEN ANY UNCERTAIN TAX POSITIONS THAT WOULD JEOPARDIZE ITS FEDERAL INCOME TAX EXEMPTION STATUS. |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 1 | CONTRIBUTED CAPITAL 800. |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | PART X, LINE 2: |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | PART XI, LINE 4B - OTHER ADJUSTMENTS: |
| IRS990ScheduleD/TotalBookValueLandBuildingsAmt | 0 | 0 |
| IRS990ScheduleD/TotalExpensesPerForm990Amt | 0 | 1465973 |
| IRS990ScheduleD/TotalLiabilityAmt | 0 | 2197417 |
| IRS990ScheduleD/TotalRevenuePerForm990Amt | 0 | 1678951 |
| IRS990ScheduleD/TotalRevEtcAuditedFinclStmtAmt | 0 | 1504028 |
| IRS990ScheduleD/TotExpnsEtcAuditedFinclStmtAmt | 0 | 1438664 |
| IRS990/ScheduleJRequiredInd | 0 | 0 |