| IRS990/AccountantCompileOrReviewInd | 0 | false |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 141091 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 169987 |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 328486 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 440679 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | false |
| IRS990/ActivityOrMissionDesc | 0 | To advance the study of human ailments & injuries; the causes, prevention, relief, & cure thereof, hygiene, health & public welfare, & to assist in research in the broadest sense |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 0 |
| IRS990/AllOtherContributionsAmt | 0 | 852915 |
| IRS990/AllOtherExpensesGrp/ManagementAndGeneralAmt | 0 | 798 |
| IRS990/AllOtherExpensesGrp/ProgramServicesAmt | 0 | 48061 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 48859 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | true |
| IRS990/AuditCommitteeInd | 0 | false |
| IRS990/BenefitsToMembersGrp/TotalAmt | 0 | 0 |
| IRS990/BooksInCareOfDetail/PersonNm | 0 | JENNIFER REINING |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 6036530481 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | ONE MEDICAL CENTER DRIVE |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | LEBANON |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | NH |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 03756 |
| IRS990/BusinessRlnWithFamMemInd | 0 | false |
| IRS990/BusinessRlnWithOfficerEntInd | 0 | false |
| IRS990/BusinessRlnWithOrgMemInd | 0 | false |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 82861 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 196177 |
| IRS990/ChangeToOrgDocumentsInd | 0 | false |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 3 |
| IRS990/CollectionsOfArtInd | 0 | false |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 0 |
| IRS990/CompDisqualPersonsGrp/TotalAmt | 0 | 0 |
| IRS990/CompensationFromOtherSrcsInd | 0 | false |
| IRS990/CompensationProcessCEOInd | 0 | false |
| IRS990/CompensationProcessOtherInd | 0 | false |
| IRS990/ConferencesMeetingsGrp/ManagementAndGeneralAmt | 0 | 2838 |
| IRS990/ConferencesMeetingsGrp/ProgramServicesAmt | 0 | 218571 |
| IRS990/ConferencesMeetingsGrp/TotalAmt | 0 | 221409 |
| IRS990/ConflictOfInterestPolicyInd | 0 | true |
| IRS990/ConservationEasementsInd | 0 | false |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | true |
| IRS990/ContractorCompensationGrp/CompensationAmt | 0 | 137812 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 1 | 1116836 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 2 | 478644 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 0 | 37 Dewey Field |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 1 | One Medical Center Drive |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 2 | One Medical Center Drive |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 0 | HANOVER |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 1 | LEBANON |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 2 | LEBANON |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 0 | NH |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 1 | NH |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 2 | NH |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 0 | 03755 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 1 | 03756 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 2 | 03756 |
| IRS990/ContractorCompensationGrp/ContractorName/PersonNm | 0 | Trustees of Dartmouth College |
| IRS990/ContractorCompensationGrp/ContractorName/PersonNm | 1 | Mary Hitchcock Memorial Hospital |
| IRS990/ContractorCompensationGrp/ContractorName/PersonNm | 2 | Dartmouth-Hitchcock Clinic |
| IRS990/ContractorCompensationGrp/ServicesDesc | 0 | Contracted Services |
| IRS990/ContractorCompensationGrp/ServicesDesc | 1 | Contracted Services |
| IRS990/ContractorCompensationGrp/ServicesDesc | 2 | Contracted Services |
| IRS990/CostOfGoodsSoldAmt | 0 | 0 |
| IRS990/CreditCounselingInd | 0 | false |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 1417468 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 396023 |
| IRS990/CYInvestmentIncomeAmt | 0 | 1464624 |
| IRS990/CYOtherExpensesAmt | 0 | 2523566 |
| IRS990/CYOtherRevenueAmt | 0 | 734 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 1550433 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 1513670 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 0 |
| IRS990/CYTotalExpensesAmt | 0 | 2919589 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 0 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 4433259 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | true |
| IRS990/DeductibleArtContributionInd | 0 | false |
| IRS990/DeductibleNonCashContriInd | 0 | false |
| IRS990/DeferredRevenueGrp/BOYAmt | 0 | 0 |
| IRS990/DeferredRevenueGrp/EOYAmt | 0 | 0 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | false |
| IRS990/DepreciationDepletionGrp/ManagementAndGeneralAmt | 0 | 187 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 187 |
| IRS990/Desc | 0 | The Hitchcock Foundation provides between 15 and 20 grants per year and sponsors over 400 advised funds that support clinically oriented research and education activities in furtherance of our mission. Sponsored research Funds support discrete clinical and biomedical research projects and are funded by external sources including corporations and foundations. Advised Funds are established by the Executive Director under the authority of the Board of Trustees. They are funded with contributions intended to support activities consistent with our charitable mission - particularly clinical research and education. They are not donor advised funds; rather the advisors are scientists and clinicians with expertise in the areas of research and education supported by the fund. The foundation also provides funding for research grants and fellowships; amounts awarded range from $1,000 to $125,000 and are awarded on a competitive basis. |
| IRS990/DescribedInSection501c3Ind | 0 | true |
| IRS990/DisregardedEntityInd | 0 | false |
| IRS990/DocumentRetentionPolicyInd | 0 | true |
| IRS990/DonorAdvisedFundInd | 0 | false |
| IRS990/ElectionOfBoardMembersInd | 0 | true |
| IRS990/EmployeeCnt | 0 | 0 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | false |
| IRS990/EscrowAccountLiabilityGrp/BOYAmt | 0 | 0 |
| IRS990/EscrowAccountLiabilityGrp/EOYAmt | 0 | 0 |
| IRS990/ExpenseAmt | 0 | 2776124 |
| IRS990/FamilyOrBusinessRlnInd | 0 | true |
| IRS990/FederalGrantAuditPerformedInd | 0 | true |
| IRS990/FederalGrantAuditRequiredInd | 0 | true |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 0 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 0 |
| IRS990/FeesForServicesLobbyingGrp/TotalAmt | 0 | 0 |
| IRS990/FeesForServicesManagementGrp/ProgramServicesAmt | 0 | 42880 |
| IRS990/FeesForServicesManagementGrp/TotalAmt | 0 | 42880 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 1738764 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 1738764 |
| IRS990/FeesForServicesProfFundraising/TotalAmt | 0 | 0 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/ManagementAndGeneralAmt | 0 | 139107 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/TotalAmt | 0 | 139107 |
| IRS990/ForeignActivitiesInd | 0 | true |
| IRS990/ForeignFinancialAccountInd | 0 | false |
| IRS990/ForeignGrantsGrp/ProgramServicesAmt | 0 | 49395 |
| IRS990/ForeignGrantsGrp/TotalAmt | 0 | 49395 |
| IRS990/ForeignOfficeInd | 0 | false |
| IRS990/Form8282PropertyDisposedOfInd | 0 | false |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 0 | 40.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 1 | 0.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 2 | 0.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 3 | 0.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 4 | 2.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 5 | 0.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 6 | 2.01 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 7 | 40.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 8 | 0.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 9 | 1.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 10 | 40.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 11 | 0.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 0.3 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 0.3 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 0.3 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 0.5 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 0.5 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 0.3 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 0.3 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 3.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 0.3 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 0.5 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 0.3 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 11 | 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/IndividualTrusteeOrDirectorInd | 7 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 8 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 9 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 10 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 336136 |
| 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 | 88112 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 9 | 197191 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 10 | 51863 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 11 | 17948 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | E Ann Gormley MD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | Robert Maue PhD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | R Brooks Robey MD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | Barry Smith MD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | Edward Stansfield III MA |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | Michael Ward MS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | Duane Compton PhD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | Jeffrey Cohen MD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | William Wickner MD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | Lawrence Dacey MD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | Philip Goodney MD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | Jennifer Reining |
| 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/ReportableCompFromRltdOrgAmt | 0 | 497960 |
| 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 | 437776 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 9 | 74882 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 10 | 512774 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 11 | 107123 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | Trustee/Physician |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | Trustee/Board Secretary |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | Trustee/Board Treasurer |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | Trustee Ex-Officio |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | Trustee Ex-Officio/Physician |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | Chair/Physician |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | Trustee/Physician |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | Executive Director |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | true |
| IRS990/Form990TFiledInd | 0 | true |
| IRS990/FormationYr | 0 | 1946 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | false |
| IRS990/FSAuditedBasisGrp/ConsolidatedBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | true |
| IRS990/FundraisingActivitiesInd | 0 | false |
| IRS990/FundraisingDirectExpensesAmt | 0 | 0 |
| IRS990/FundraisingGrossIncomeAmt | 0 | 0 |
| IRS990/GainOrLossGrp/SecuritiesAmt | 0 | 1119710 |
| IRS990/GamingActivitiesInd | 0 | false |
| IRS990/GamingDirectExpensesAmt | 0 | 0 |
| IRS990/GamingGrossIncomeAmt | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 11 |
| IRS990/GrantAmt | 0 | 396023 |
| IRS990/GrantsPayableGrp/BOYAmt | 0 | 0 |
| IRS990/GrantsPayableGrp/EOYAmt | 0 | 0 |
| IRS990/GrantsToDomesticIndividualsGrp/ProgramServicesAmt | 0 | 316628 |
| IRS990/GrantsToDomesticIndividualsGrp/TotalAmt | 0 | 316628 |
| IRS990/GrantsToDomesticOrgsGrp/ProgramServicesAmt | 0 | 30000 |
| IRS990/GrantsToDomesticOrgsGrp/TotalAmt | 0 | 30000 |
| IRS990/GrantsToIndividualsInd | 0 | true |
| IRS990/GrantsToOrganizationsInd | 0 | true |
| IRS990/GrantToRelatedPersonInd | 0 | false |
| IRS990/GrossAmountSalesAssetsGrp/SecuritiesAmt | 0 | 10045851 |
| IRS990/GrossReceiptsAmt | 0 | 13359400 |
| IRS990/GrossSalesOfInventoryAmt | 0 | 0 |
| IRS990/GroupReturnForAffiliatesInd | 0 | false |
| IRS990/IncludeFIN48FootnoteInd | 0 | false |
| IRS990/IncmFromInvestBondProceedsGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/IndependentAuditFinclStmtInd | 0 | false |
| IRS990/IndependentVotingMemberCnt | 0 | 7 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/IndoorTanningServicesInd | 0 | false |
| IRS990/InfoInScheduleOPartIIIInd | 0 | X |
| IRS990/InfoInScheduleOPartIXInd | 0 | X |
| IRS990/InfoInScheduleOPartVIIInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InfoInScheduleOPartXIIInd | 0 | X |
| IRS990/InfoInScheduleOPartXInd | 0 | X |
| IRS990/InformationTechnologyGrp/ProgramServicesAmt | 0 | 3001 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 3001 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 0 |
| IRS990/IntangibleAssetsGrp/BOYAmt | 0 | 0 |
| IRS990/IntangibleAssetsGrp/EOYAmt | 0 | 0 |
| IRS990/InterestGrp/TotalAmt | 0 | 0 |
| IRS990/InventoriesForSaleOrUseGrp/BOYAmt | 0 | 0 |
| IRS990/InventoriesForSaleOrUseGrp/EOYAmt | 0 | 0 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 354495 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 344914 |
| IRS990/InvestmentIncomeGrp/UnrelatedBusinessRevenueAmt | 0 | -9581 |
| IRS990/InvestmentInJointVentureInd | 0 | false |
| IRS990/InvestmentsOtherSecuritiesGrp/BOYAmt | 0 | 0 |
| IRS990/InvestmentsOtherSecuritiesGrp/EOYAmt | 0 | 0 |
| IRS990/InvestmentsProgramRelatedGrp/BOYAmt | 0 | 0 |
| IRS990/InvestmentsProgramRelatedGrp/EOYAmt | 0 | 0 |
| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 24460798 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 26258014 |
| IRS990/IRPDocumentCnt | 0 | 34 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 5120 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 220 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 33 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 5153 |
| IRS990/LegalDomicileStateCd | 0 | NH |
| IRS990/LessCostOthBasisSalesExpnssGrp/SecuritiesAmt | 0 | 8926141 |
| IRS990/LoanOutstandingInd | 0 | false |
| IRS990/LoansFromOfficersDirectorsGrp/BOYAmt | 0 | 0 |
| IRS990/LoansFromOfficersDirectorsGrp/EOYAmt | 0 | 0 |
| IRS990/LobbyingActivitiesInd | 0 | false |
| IRS990/LocalChaptersInd | 0 | false |
| IRS990/MaterialDiversionOrMisuseInd | 0 | false |
| IRS990/MembersOrStockholdersInd | 0 | true |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | true |
| IRS990/MinutesOfGoverningBodyInd | 0 | true |
| IRS990/MissionDesc | 0 | THE PURPOSE OF THE HITCHCOCK FOUNDATION SHALL BE TO AID AND ADVANCE THE STUDY AND INVESTIGATION OF HUMAN AILMENTS AND INJURIES, AND THE CAUSES, PREVENTION, RELIEF, AND CURE THEREOF, AND THE STUDY AND INVESTIGATION OF PROBLEMS OF HYGIENE, HEALTH AND PUBLIC WELFARE, AND THE PROMOTION OF MEDICAL, SURGICAL AND SCIENTIFIC LEARNING, SKILL, EDUCATION AND INVESTIGATION, AND TO ENGAGE IN AND CONDUCT AND TO AID AND ASSIST IN MEDICAL, SURGICAL AND SCIENTIFIC RESEARCH IN THE BROADEST SENSE. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | false |
| IRS990/MoreThan5000KToOrgInd | 0 | true |
| IRS990/MortgNotesPyblScrdInvstPropGrp/BOYAmt | 0 | 0 |
| IRS990/MortgNotesPyblScrdInvstPropGrp/EOYAmt | 0 | 0 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 24690197 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 26676330 |
| IRS990/NetGainOrLossInvestmentsGrp/ExclusionAmt | 0 | 1119710 |
| IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt | 0 | 1119710 |
| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/NetIncomeFromGamingGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/NetIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/NetRentalIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | -9581 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | 472463 |
| IRS990/NondeductibleContributionsInd | 0 | false |
| IRS990/OccupancyGrp/TotalAmt | 0 | 0 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 535 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 1891 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 2426 |
| IRS990/OfficerMailingAddressInd | 0 | false |
| IRS990/OperateHospitalInd | 0 | false |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsSFAS117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 0 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 0 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 0 |
| IRS990/OtherExpensesGrp/Desc | 0 | RESEARCH EXP & SUBJECT FEES |
| IRS990/OtherExpensesGrp/Desc | 1 | EDU MATERIAL & HONORARIUMS |
| IRS990/OtherExpensesGrp/Desc | 2 | LAB FEES, EQUIPMENT, & SUPLS |
| IRS990/OtherExpensesGrp/Desc | 3 | TESTS & EXAMINATIONS |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 76867 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 43953 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 70570 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 3 | 12212 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 76867 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 43953 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 70570 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 12212 |
| IRS990/OtherLiabilitiesGrp/BOYAmt | 0 | 45077 |
| IRS990/OtherLiabilitiesGrp/EOYAmt | 0 | 50586 |
| IRS990/OtherRevenueTotalAmt | 0 | 0 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 0 |
| IRS990/OthNotesLoansReceivableNetGrp/BOYAmt | 0 | 4000 |
| IRS990/OthNotesLoansReceivableNetGrp/EOYAmt | 0 | 2000 |
| IRS990/PartialLiquidationInd | 0 | false |
| IRS990/PaymentsToAffiliatesGrp/TotalAmt | 0 | 0 |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | false |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 0 |
| IRS990/PensionPlanContributionsGrp/TotalAmt | 0 | 0 |
| IRS990/PermanentlyRstrNetAssetsGrp/BOYAmt | 0 | 2144213 |
| IRS990/PermanentlyRstrNetAssetsGrp/EOYAmt | 0 | 2144213 |
| IRS990/PledgesAndGrantsReceivableGrp/BOYAmt | 0 | 0 |
| IRS990/PledgesAndGrantsReceivableGrp/EOYAmt | 0 | 0 |
| IRS990/PoliticalCampaignActyInd | 0 | false |
| IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt | 0 | 0 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 0 |
| IRS990/PrincipalOfficerNm | 0 | E Ann Gormley MD |
| IRS990/ProfessionalFundraisingInd | 0 | false |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 0 | 541700 |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | SPONSORD RSRCH, PROGRAM RSRCH, & ED RSRCH |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 1550433 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 1550433 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | false |
| IRS990/PYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/PYContributionsGrantsAmt | 0 | 1362918 |
| IRS990/PYExcessBenefitTransInd | 0 | false |
| IRS990/PYGrantsAndSimilarPaidAmt | 0 | 348028 |
| IRS990/PYInvestmentIncomeAmt | 0 | 1159150 |
| IRS990/PymtTravelEntrtnmntPubOfclGrp/TotalAmt | 0 | 0 |
| IRS990/PYOtherExpensesAmt | 0 | 2647906 |
| IRS990/PYOtherRevenueAmt | 0 | 3836 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 1338302 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | 868272 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 0 |
| IRS990/PYTotalExpensesAmt | 0 | 2995934 |
| IRS990/PYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/PYTotalRevenueAmt | 0 | 3864206 |
| IRS990/QuidProQuoContributionsInd | 0 | false |
| IRS990/RcvblFromDisqualifiedPrsnGrp/BOYAmt | 0 | 0 |
| IRS990/RcvblFromDisqualifiedPrsnGrp/EOYAmt | 0 | 0 |
| IRS990/RcvFndsToPayPrsnlBnftCntrctInd | 0 | false |
| IRS990/ReceivablesFromOfficersEtcGrp/BOYAmt | 0 | 0 |
| IRS990/ReceivablesFromOfficersEtcGrp/EOYAmt | 0 | 0 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | 1513670 |
| IRS990/RegularMonitoringEnfrcInd | 0 | true |
| IRS990/RelatedEntityInd | 0 | true |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | true |
| IRS990/RelatedOrganizationsAmt | 0 | 564553 |
| IRS990/RentalIncomeOrLossGrp/PersonalAmt | 0 | 0 |
| IRS990/RentalIncomeOrLossGrp/RealAmt | 0 | 0 |
| IRS990/ReportInvestmentsOtherSecInd | 0 | false |
| IRS990/ReportLandBuildingEquipmentInd | 0 | true |
| IRS990/ReportOtherAssetsInd | 0 | false |
| IRS990/ReportOtherLiabilitiesInd | 0 | true |
| IRS990/ReportProgramRelatedInvstInd | 0 | false |
| IRS990/RevenueAmt | 0 | 1550433 |
| IRS990/RoyaltiesGrp/TotalAmt | 0 | 0 |
| IRS990/RoyaltiesRevenueGrp/ExclusionAmt | 0 | 734 |
| IRS990/RoyaltiesRevenueGrp/TotalRevenueColumnAmt | 0 | 734 |
| IRS990/SavingsAndTempCashInvstGrp/BOYAmt | 0 | 0 |
| IRS990/SavingsAndTempCashInvstGrp/EOYAmt | 0 | 0 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearAmt | 0 | 1417468 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus1YearAmt | 0 | 1362918 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 1416161 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 1554538 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 699178 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/TotalAmt | 0 | 6450263 |
| IRS990ScheduleA/GovtFurnSrvcFcltsVl170Grp/TotalAmt | 0 | 0 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearAmt | 0 | 355229 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus1YearAmt | 0 | 309545 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 292323 |