| IRS990EZ/ActivitiesNotPreviouslyRptInd | 0 | false |
| IRS990EZ/BooksInCareOfDetail/PersonNm | 0 | BRUCE H HARDY |
| IRS990EZ/BooksInCareOfDetail/PhoneNum | 0 | 6034653935 |
| IRS990EZ/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 20 MAIN STREET |
| IRS990EZ/BooksInCareOfDetail/USAddress/CityNm | 0 | Hollis |
| IRS990EZ/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | NH |
| IRS990EZ/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 03049 |
| IRS990EZ/CashSavingsAndInvestmentsGrp/BOYAmt | 0 | 152867 |
| IRS990EZ/CashSavingsAndInvestmentsGrp/EOYAmt | 0 | 222564 |
| IRS990EZ/ChgMadeToOrgnzngDocNotRptInd | 0 | false |
| IRS990EZ/ContributionsGiftsGrantsEtcAmt | 0 | 6227 |
| IRS990EZ/DonorAdvisedFndsInd | 0 | false |
| IRS990EZ/EngagedInExcessBenefitTransInd | 0 | false |
| IRS990EZ/ExcessOrDeficitForYearAmt | 0 | 69697 |
| IRS990EZ/FiledScheduleAInd | 0 | true |
| IRS990EZ/ForeignFinancialAccountInd | 0 | false |
| IRS990EZ/ForeignOfficeInd | 0 | false |
| IRS990EZ/Form1120PolFiledInd | 0 | false |
| IRS990EZ/Form990TotalAssetsGrp/BOYAmt | 0 | 193867 |
| IRS990EZ/Form990TotalAssetsGrp/EOYAmt | 0 | 263564 |
| IRS990EZ/FundraisingGrossIncomeAmt | 0 | 7421 |
| IRS990EZ/GrantsAndSimilarAmountsPaidAmt | 0 | 1820 |
| IRS990EZ/GrossReceiptsAmt | 0 | 111861 |
| IRS990EZ/InfoInScheduleOPartIInd | 0 | X |
| IRS990EZ/InvestmentIncomeAmt | 0 | 1360 |
| IRS990EZ/LandAndBuildingsGrp/BOYAmt | 0 | 41000 |
| IRS990EZ/LandAndBuildingsGrp/EOYAmt | 0 | 41000 |
| IRS990EZ/LobbyingActivitiesInd | 0 | false |
| IRS990EZ/MadeLoansToFromOfficersInd | 0 | false |
| IRS990EZ/MembershipDuesAmt | 0 | 5790 |
| IRS990EZ/MethodOfAccountingCashInd | 0 | X |
| IRS990EZ/NetAssetsOrFundBalancesBOYAmt | 0 | 193867 |
| IRS990EZ/NetAssetsOrFundBalancesEOYAmt | 0 | 263564 |
| IRS990EZ/NetAssetsOrFundBalancesGrp/BOYAmt | 0 | 193867 |
| IRS990EZ/NetAssetsOrFundBalancesGrp/EOYAmt | 0 | 263564 |
| IRS990EZ/OccupancyRentUtltsAndMaintAmt | 0 | 35567 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 0 | 4.00 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 1 | 4.00 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 2 | 4.00 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 3 | 4.00 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 4 | 4.00 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 5 | 2.00 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 6 | 2.00 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 7 | 2.00 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 0 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 1 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 2 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 3 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 4 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 5 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 6 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 7 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt | 0 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt | 1 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt | 2 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt | 3 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt | 4 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt | 5 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt | 6 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt | 7 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt | 0 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt | 1 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt | 2 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt | 3 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt | 4 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt | 5 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt | 6 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt | 7 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 0 | BRUCE H HARDY |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 1 | LOUANN SWANEY |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 2 | FREDRICKA OLSON |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 3 | BRIDGET MEINHARDT |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 4 | CHERYL LIEBLING |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 5 | NANCY BELL |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 6 | DAVID SULLIVAN |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 7 | DOUG NYE |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 0 | PRESIDENT |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 1 | VP-PROGRAM DIRECTOR |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 2 | CLERK |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 3 | TREASURER |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 4 | CURATOR |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 5 | DIRECTOR |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 6 | DIRECTOR |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 7 | DIRECTOR |
| IRS990EZ/OperateHospitalInd | 0 | false |
| IRS990EZ/Organization501c3Ind | 0 | X |
| IRS990EZ/OrganizationDissolvedEtcInd | 0 | false |
| IRS990EZ/OrganizationHadUBIInd | 0 | false |
| IRS990EZ/OtherAssetsTotalDetail/BOYAmt | 0 | 0 |
| IRS990EZ/OtherAssetsTotalDetail/EOYAmt | 0 | 0 |
| IRS990EZ/OtherExpensesTotalAmt | 0 | 761 |
| IRS990EZ/OtherRevenueTotalAmt | 0 | 91063 |
| IRS990EZ/PartVIHghstPdCntrctProfSrvcTxt | 0 | NONE |
| IRS990EZ/PartVIOfCompOfHghstPdEmplTxt | 0 | NONE |
| IRS990EZ/PoliticalCampaignActyInd | 0 | false |
| IRS990EZ/PrimaryExemptPurposeTxt | 0 | PUBLIC PGMS OF LOCAL HISTORY AND MUSEUMS |
| IRS990EZ/PrintingPublicationsPostageAmt | 0 | 4016 |
| IRS990EZ/ProgramSrvcAccomplishmentGrp/DescriptionProgramSrvcAccomTxt | 0 | PROVIDE PUBLIC PROGRAMS OF HISTORICAL INTEREST WITH AN EMPHASIS ON LOCAL OR STATE HISTORY. OPEN TO THE PUBLIC. FIVE PROGRAMS PER YEAR WITH AN AVERAGE ATTENDANCE OF 50-60 PEOPLE |
| IRS990EZ/ProgramSrvcAccomplishmentGrp/DescriptionProgramSrvcAccomTxt | 1 | MAINTAIN TWO MUSEUMS FEATURING LOCAL HISTORICAL EVENTS INCLUDING PARTICIPATION IN THE US REVOLUTIONARY WAR. OPEN TO THE PUBLIC. VARIOUS ATTENDANCE DURING THE YEAR |
| IRS990EZ/ProgramSrvcAccomplishmentGrp/DescriptionProgramSrvcAccomTxt | 2 | PROVIDE GENEALOGICAL REFERENCE MATERIAL FOR TOWN RESIDENTS AND OTHERS SEEKING FAMILY HISTORY INFORMATION |
| IRS990EZ/ProgramSrvcAccomplishmentGrp/GrantsAndAllocationsAmt | 0 | 400 |
| IRS990EZ/ProgramSrvcAccomplishmentGrp/ProgramServiceExpensesAmt | 0 | 1820 |
| IRS990EZ/ProgramSrvcAccomplishmentGrp/ProgramServiceExpensesAmt | 1 | 10000 |
| IRS990EZ/ProgramSrvcAccomplishmentGrp/ProgramServiceExpensesAmt | 2 | 2000 |
| IRS990EZ/ProhibitedTaxShelterTransInd | 0 | false |
| IRS990EZ/RelatedOrganizationCtrlEntInd | 0 | false |
| IRS990EZ/ScheduleBNotRequiredInd | 0 | X |
| IRS990EZ/SchoolOperatingInd | 0 | false |
| IRS990EZ/SpecialEventsNetIncomeLossAmt | 0 | 7421 |
| IRS990EZ/StatesWhereCopyOfReturnIsFldCd | 0 | NH |
| IRS990EZ/SubjectToProxyTaxInd | 0 | false |
| IRS990EZ/SumOfTotalLiabilitiesGrp/BOYAmt | 0 | 0 |
| IRS990EZ/SumOfTotalLiabilitiesGrp/EOYAmt | 0 | 0 |
| IRS990EZ/TanningServicesProvidedInd | 0 | false |
| IRS990EZ/TotalExpensesAmt | 0 | 42164 |
| IRS990EZ/TotalProgramServiceExpensesAmt | 0 | 13820 |
| IRS990EZ/TotalRevenueAmt | 0 | 111861 |
| IRS990EZ/TransactionWithControlEntInd | 0 | false |
| IRS990EZ/TrnsfrExmptNonChrtblRltdOrgInd | 0 | false |
| IRS990EZ/TypeOfOrganizationCorpInd | 0 | X |
| IRS990EZ/WebsiteAddressTxt | 0 | HOLLISHISTORICALSOCIETY.ORG |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearAmt | 0 | 12017 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus1YearAmt | 0 | 17249 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus2YearsAmt | 0 | 80617 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus3YearsAmt | 0 | 7102 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus4YearsAmt | 0 | 9609 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/TotalAmt | 0 | 126594 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearAmt | 0 | 1360 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus1YearAmt | 0 | 179 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus2YearsAmt | 0 | 64 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus3YearsAmt | 0 | 1359 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus4YearsAmt | 0 | 661 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/TotalAmt | 0 | 3623 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearAmt | 0 | 7421 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus1YearAmt | 0 | 9760 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus2YearsAmt | 0 | 2785 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus3YearsAmt | 0 | 4176 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus4YearsAmt | 0 | 4718 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/TotalAmt | 0 | 28860 |
| IRS990ScheduleA/GrossReceiptsNonUnrltBusGrp/CurrentTaxYearAmt | 0 | 91064 |
| IRS990ScheduleA/GrossReceiptsNonUnrltBusGrp/TotalAmt | 0 | 91064 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearAmt | 0 | 1360 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearMinus1YearAmt | 0 | 179 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearMinus2YearsAmt | 0 | 64 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearMinus3YearsAmt | 0 | 1359 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearMinus4YearsAmt | 0 | 661 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/TotalAmt | 0 | 3623 |
| IRS990ScheduleA/InvestmentIncomeCYPct | 0 | 0.01000 |
| IRS990ScheduleA/InvestmentIncomePYPct | 0 | 0.02000 |
| IRS990ScheduleA/PubliclySupportedOrg509a2Ind | 0 | X |
| IRS990ScheduleA/PublicSupportCY509Pct | 0 | 0.98550 |
| IRS990ScheduleA/PublicSupportPY509Pct | 0 | 0.98360 |
| IRS990ScheduleA/PublicSupportTotal509Amt | 0 | 246518 |
| IRS990ScheduleA/ThirtyThrPctSuprtTestsCY509Ind | 0 | X |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearAmt | 0 | 110502 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus1YearAmt | 0 | 27009 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus2YearsAmt | 0 | 83402 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus3YearsAmt | 0 | 11278 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus4YearsAmt | 0 | 14327 |
| IRS990ScheduleA/Total509Grp/TotalAmt | 0 | 246518 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearAmt | 0 | 111862 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus1YearAmt | 0 | 27188 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus2YearsAmt | 0 | 83466 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus3YearsAmt | 0 | 12637 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus4YearsAmt | 0 | 14988 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/TotalAmt | 0 | 250141 |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | Description AmountOTHER REVENUE 91,063IN THIS FISCAL YEAR, HOLLIS HISTORICAL SOCIETY,INC.,PARTICIPATED FOR THE FIRST TIME IN A GAMING PARTNERSHIP WITH EESKAY NH,A LICENSED GAME OPERATOR,PURSUANT TO PROVISIONS AND REQUIREMENTS OF THE NH LOTTERY COMMISSION,WHEREBY EESKAY NH (AS WELL AS ALL OTHER GAMING ESTABLISHMENTS IN THE STATE OF NH) IS REQUIRED TO SHARE ITS PROFITS DERIVED FROM GAMING OPERATIONS WITH CHARITABLE ORGANIZATIONS,AS APPROVED BY THE NH LOTTERY COMMISSION.THE CHARITABLE ORGANIZATIONS MUST BE 501(C)(3) ORGANIZATIONS AND MUST APPLY TO THE NH LOTTERY COMMISSION FOR INCLUSION IN THE PARTNERSHIP PROGRAM. ALL ASPECTS OF THE PARTNERING ARE REGULATED BY THE NH LOTTERY COMMISSION.EESKAY NH PROVIDED THE FACILITY AND ALL PERSONNEL REQUIRED FOR THE OPERATION OF THE GAMING EVENT.THE REVENUE OF $91,063.76 IS THE FULL AMOUNT RECEIVED FROM EESKAY NH.THE ONLY EXPENSE WAS A $50 FEE PAID TO THE NH LOTTERY COMMISSION. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | Amount 1,820A TOTAL OF $1,820.00 WAS PAID TO VARIOUS INDIVIDUALS AS FEES FOR PRESENTING VARIOUS HISTORICAL PROGRAMS, OPEN TOTHE PUBLIC. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 2 | Description AmountOTHER EXPENSES 761MEMBERSHIP FEES IN OTHER ORGANIZATIONS, SUCH AS THE NH HISTORICAL SOCIETY, AND MISCELLANEOUS EXPENSES $760.55 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | Description of other revenue Part I line 8 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | List of grants and similar amounts paid Part I line 10 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | Description of other expenses Part I line 16 |
| ReturnHeader/BuildTS | 0 | 2025-03-06 01:10:19Z |
| ReturnHeader/BusinessOfficerGrp/DiscussWithPaidPreparerInd | 0 | true |
| ReturnHeader/BusinessOfficerGrp/PersonNm | 0 | BRUCE H HARDY |
| ReturnHeader/BusinessOfficerGrp/PersonTitleTxt | 0 | PRESIDENT |
| ReturnHeader/BusinessOfficerGrp/PhoneNum | 0 | 6034653935 |
| ReturnHeader/BusinessOfficerGrp/SignatureDt | 0 | 2025-05-13 |
| ReturnHeader/Filer/BusinessName/BusinessNameLine1Txt | 0 | HOLLIS HISTORICAL SOCIETY |
| ReturnHeader/Filer/BusinessNameControlTxt | 0 | HOLL |
| ReturnHeader/Filer/EIN | 0 | 237033982 |
| ReturnHeader/Filer/USAddress/AddressLine1Txt | 0 | PO BOX 754 |
| ReturnHeader/Filer/USAddress/CityNm | 0 | Hollis |
| ReturnHeader/Filer/USAddress/StateAbbreviationCd | 0 | NH |
| ReturnHeader/Filer/USAddress/ZIPCd | 0 | 03049 |
| ReturnHeader/IRSResponsiblePrtyInfoCurrInd | 0 | true |
| ReturnHeader/PreparerFirmGrp/PreparerFirmEIN | 0 | 861708441 |
| ReturnHeader/PreparerFirmGrp/PreparerFirmName/BusinessNameLine1Txt | 0 | Egreentax LLC |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/AddressLine1Txt | 0 | 330 Broad Street |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/CityNm | 0 | Hollis |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/StateAbbreviationCd | 0 | NH |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/ZIPCd | 0 | 03049 |
| ReturnHeader/PreparerPersonGrp/PhoneNum | 0 | 6035214605 |
| ReturnHeader/PreparerPersonGrp/PreparationDt | 0 | 2025-05-13 |
| ReturnHeader/PreparerPersonGrp/PreparerPersonNm | 0 | Malarvizhi Senthilkumar EA |
| ReturnHeader/PreparerPersonGrp/SelfEmployedInd | 0 | X |
| ReturnHeader/ReturnTs | 0 | 2025-05-13T18:36:52-04:00 |
| ReturnHeader/ReturnTypeCd | 0 | 990EZ |
| ReturnHeader/TaxPeriodBeginDt | 0 | 2023-07-01 |
| ReturnHeader/TaxPeriodEndDt | 0 | 2024-06-30 |
| ReturnHeader/TaxYr | 0 | 2023 |
