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| IRS990/ActivityOrMissionDesc | 0 | TO OPERATE A MUSEUM OF MATHEMATICS, PUBLIC EXHIBITIONS,INTERACTIVE DISPLAYS, AND EDUCATIONAL PROGRAMS ABOUT MATHEMATICS TO ENHANCE PUBLIC UNDERSTANDING OF MATHEMATICS AND THE IMPORTANCE OF MATHEMATICS IN EVERYDAY LIFE. |
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| IRS990/Desc | 0 | MUSEUM: DURING FISCAL 2014, MOMATH OPERATED A HANDS-ON MUSEUM FOCUSED ON MATHEMATICS. SCHOOL GROUPS FLOCKED TO THE MUSEUM DURING THE SCHOOL YEAR, WITH FAMILIES AND TOURISTS ROUNDING OUT VISITATION THROUGHOUT THE YEAR AND ESPECIALLY ON WEEKENDS. |
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| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 13 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 14 | TRUSTEE UNTIL 3/4/14 |
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| IRS990/Form990PartVIISectionAGrp/TitleTxt | 16 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 17 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 18 | TRUSTEE |
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| IRS990/Form990PartVIISectionAGrp/TitleTxt | 20 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 21 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 22 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 23 | CO-EXECUTIVE DIRECTOR |
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| IRS990/FormationYr | 0 | 2009 |
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| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | 1 |
| IRS990/FundraisingActivitiesInd | 0 | 1 |
| IRS990/FundraisingAmt | 0 | 2046309 |
| IRS990/FundraisingDirectExpensesAmt | 0 | 215302 |
| IRS990/FundraisingGrossIncomeAmt | 0 | 66387 |
| IRS990/GainOrLossGrp/OtherAmt | 0 | 108287 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 20 |
| IRS990/GovernmentGrantsAmt | 0 | 100000 |
| IRS990/GrantsToIndividualsInd | 0 | 0 |
| IRS990/GrantsToOrganizationsInd | 0 | 0 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
| IRS990/GrossAmountSalesAssetsGrp/OtherAmt | 0 | 219948 |
| IRS990/GrossReceiptsAmt | 0 | 6706029 |
| IRS990/GrossRentsGrp/RealAmt | 0 | 50517 |
| IRS990/GrossSalesOfInventoryAmt | 0 | 527416 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 1 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 1 |
| IRS990/IndependentVotingMemberCnt | 0 | 20 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 2 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartIIIInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InfoInScheduleOPartXIIInd | 0 | X |
| IRS990/InformationTechnologyGrp/FundraisingAmt | 0 | 1157 |
| IRS990/InformationTechnologyGrp/ManagementAndGeneralAmt | 0 | 2958 |
| IRS990/InformationTechnologyGrp/ProgramServicesAmt | 0 | 50623 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 54738 |
| IRS990/InsuranceGrp/FundraisingAmt | 0 | 914 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 1782 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 8010 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 10706 |
| IRS990/IntangibleAssetsGrp/BOYAmt | 0 | 31692 |
| IRS990/IntangibleAssetsGrp/EOYAmt | 0 | 32268 |
| IRS990/InventoriesForSaleOrUseGrp/BOYAmt | 0 | 73551 |
| IRS990/InventoriesForSaleOrUseGrp/EOYAmt | 0 | 84790 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 19111 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 19111 |
| IRS990/InvestmentInJointVentureInd | 0 | 0 |
| IRS990/IRPDocumentCnt | 0 | 47 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 2641629 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 15196167 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 14000369 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 16641998 |
| IRS990/LegalDomicileStateCd | 0 | NY |
| IRS990/LessCostOthBasisSalesExpnssGrp/OtherAmt | 0 | 111661 |
| IRS990/LessRentalExpensesGrp/RealAmt | 0 | 0 |
| IRS990/LoanOutstandingInd | 0 | 0 |
| IRS990/LobbyingActivitiesInd | 0 | 0 |
| IRS990/LocalChaptersInd | 0 | 0 |
| IRS990/MaterialDiversionOrMisuseInd | 0 | 0 |
| IRS990/MembershipDuesAmt | 0 | 194112 |
| IRS990/MembersOrStockholdersInd | 0 | 0 |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | 1 |
| IRS990/MinutesOfGoverningBodyInd | 0 | 1 |
| IRS990/MissionDesc | 0 | MATHEMATICS ILLUMINATES THE PATTERNS THAT ABOUND IN OUR WORLD. THE NATIONAL MUSEUM OF MATHEMATICS STRIVES TO ENHANCE PUBLIC UNDERSTANDING AND PERCEPTION OF MATHEMATICS. ITS DYNAMIC EXHIBITS AND PROGRAMS STIMULATE INQUIRY, SPARK CURIOSITY, AND REVEAL THE WONDERS OF MATHEMATICS. THE MUSEUM'S ACTIVITIES LEAD A BROAD AND DIVERSE AUDIENCE TO UNDERSTAND THE EVOLVING, CREATIVE, HUMAN, AND AESTHETIC NATURE OF MATHEMATICS. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | 0 |
| IRS990/MoreThan5000KToOrgInd | 0 | 0 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 22862978 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 23909186 |
| IRS990/NetGainOrLossInvestmentsGrp/ExclusionAmt | 0 | 108287 |
| IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt | 0 | 108287 |
| IRS990/NetIncmFromFundraisingEvtGrp/ExclusionAmt | 0 | -148915 |
| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | -148915 |
| IRS990/NetIncomeOrLossGrp/RelatedOrExemptFuncIncomeAmt | 0 | 254258 |
| IRS990/NetIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | 254258 |
| IRS990/NetRentalIncomeOrLossGrp/ExclusionAmt | 0 | 50517 |
| IRS990/NetRentalIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | 50517 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NoncashContributionsAmt | 0 | 34566 |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OccupancyGrp/FundraisingAmt | 0 | 86725 |
| IRS990/OccupancyGrp/ManagementAndGeneralAmt | 0 | 115042 |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 717628 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 919395 |
| IRS990/OfficeExpensesGrp/FundraisingAmt | 0 | 20426 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 106919 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 342719 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 470064 |
| IRS990/OfficerMailingAddressInd | 0 | 0 |
| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsSFAS117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 1600690 |