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| IRS990/ActivitiesConductedPrtshpInd | 0 | false |
| IRS990/ActivityOrMissionDesc | 0 | Seamless Bay Area is advocating to transform the Bay Areas fragmented and inconvenient public transit into a world-class, unified, equitable, and widely-used system. Seamless Bay Area is primarily an advocate for legislative change at the local and state levels in California, but also conducts educational, research, and engagement activities. |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 0 |
| IRS990/AllOtherContributionsAmt | 0 | 199165 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 0 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | false |
| IRS990/BackupWthldComplianceInd | 0 | true |
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| IRS990/BooksInCareOfDetail/PersonNm | 0 | The organization |
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| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 189 Fair Oaks St |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | San Francisco |
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| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 94110 |
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| IRS990/BusinessRlnWithOrgMemInd | 0 | false |
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| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 83246 |
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| IRS990/CollectionsOfArtInd | 0 | false |
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| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 72282 |
| IRS990/CompDisqualPersonsGrp/TotalAmt | 0 | 0 |
| IRS990/CompensationFromOtherSrcsInd | 0 | false |
| IRS990/CompensationProcessCEOInd | 0 | true |
| IRS990/CompensationProcessOtherInd | 0 | false |
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| IRS990/ConflictOfInterestPolicyInd | 0 | true |
| IRS990/ConservationEasementsInd | 0 | false |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | false |
| IRS990/CostOfGoodsSoldAmt | 0 | 9708 |
| IRS990/CreditCounselingInd | 0 | false |
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| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/CYInvestmentIncomeAmt | 0 | 164 |
| IRS990/CYOtherExpensesAmt | 0 | 35712 |
| IRS990/CYOtherRevenueAmt | 0 | -9693 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 18261 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 77319 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 94866 |
| IRS990/CYTotalExpensesAmt | 0 | 130578 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 4332 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 207897 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | false |
| IRS990/DeductibleArtContributionInd | 0 | false |
| IRS990/DeductibleNonCashContriInd | 0 | false |
| IRS990/DelegationOfMgmtDutiesInd | 0 | false |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 0 |
| IRS990/Desc | 0 | - Advocacy (Non-Lobbying): Advanced seamless transit principles and policy at local and regional level in the Bay Area through charitable activities - Advocacy (Lobbying): Advanced seamless transit principles and policy at local and regional level in the Bay Area through legislative activities - Engagement: Educated and engaged members of the public about better transit planning through events across the region |
| IRS990/DescribedInSection501c3Ind | 0 | false |
| IRS990/DisregardedEntityInd | 0 | false |
| IRS990/DocumentRetentionPolicyInd | 0 | false |
| IRS990/DonorAdvisedFundInd | 0 | false |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | false |
| IRS990/ElectionOfBoardMembersInd | 0 | false |
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| IRS990/EmploymentTaxReturnsFiledInd | 0 | true |
| IRS990/EngagedInExcessBenefitTransInd | 0 | false |
| IRS990/ExpenseAmt | 0 | 113965 |
| IRS990/FamilyOrBusinessRlnInd | 0 | false |
| IRS990/FederalGrantAuditRequiredInd | 0 | false |
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| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 6590 |
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| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 5025 |
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| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 3565 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 12786 |
| IRS990/FeesForServicesProfFundraising/TotalAmt | 0 | 0 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/TotalAmt | 0 | 0 |
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| IRS990/ForeignFinancialAccountInd | 0 | false |
| IRS990/ForeignGrantsGrp/TotalAmt | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | false |
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| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 1 | 0.00 |
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| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 4 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 5 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 6 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 7 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 8 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 9 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 8.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 10.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 20.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 2.00 |
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| 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 |
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| 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/PersonNm | 0 | Ian Griffiths |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | BEAUDRY KOCK |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | SARA BARZ |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | Adina Levin |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | David Sorrell |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | Ron Kilcoyne |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | Liz Broekhuyse |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | Felix Pomerantz |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | Stephanie Beechem |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | Serena Mau |
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| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 4 | 0 |
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| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | Secr. & Treasur |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | Chairperson |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | Advocacy Dir |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | Director |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | Director |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | Director |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | Director |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | Director |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | Director |
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| IRS990/FormationYr | 0 | 2020 |
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| IRS990/FSAuditedInd | 0 | false |
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| IRS990/GamingActivitiesInd | 0 | false |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 10 |
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| IRS990/GrantsToOrganizationsInd | 0 | false |
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| IRS990/GroupReturnForAffiliatesInd | 0 | false |
| IRS990/IncludeFIN48FootnoteInd | 0 | false |
| IRS990/IncmFromInvestBondProceedsGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/IndependentAuditFinclStmtInd | 0 | false |
| IRS990/IndependentVotingMemberCnt | 0 | 9 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/IndoorTanningServicesInd | 0 | false |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InformationTechnologyGrp/ProgramServicesAmt | 0 | 70 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 70 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 1707 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 1707 |
| IRS990/IntangibleAssetsGrp/EOYAmt | 0 | 0 |
| IRS990/InterestGrp/ManagementAndGeneralAmt | 0 | 789 |
| IRS990/InterestGrp/TotalAmt | 0 | 789 |
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| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 164 |
| IRS990/InvestmentInJointVentureInd | 0 | false |
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| IRS990/IRPDocumentCnt | 0 | 4 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
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| IRS990/LegalDomicileStateCd | 0 | CA |
| IRS990/LoanOutstandingInd | 0 | false |
| IRS990/LocalChaptersInd | 0 | false |
| IRS990/MaterialDiversionOrMisuseInd | 0 | false |
| IRS990/MembersOrStockholdersInd | 0 | false |
| IRS990/MethodOfAccountingCashInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | true |
| IRS990/MinutesOfGoverningBodyInd | 0 | true |
| IRS990/MissionDesc | 0 | Seamless Bay Area is advocating to transform the Bay Areas fragmented and inconvenient public transit into a world-class, unified, equitable, and widely-used system. Seamless Bay Area is primarily an advocate for legislative change at the local and state levels in California, but also conducts educational, research, and engagement activities. |
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| IRS990/MoreThan5000KToOrgInd | 0 | false |
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| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 82395 |
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| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/NetIncomeFromGamingGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/NetIncomeOrLossGrp/RelatedOrExemptFuncIncomeAmt | 0 | -9708 |
| IRS990/NetIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | -9708 |
| IRS990/NetRentalIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 1225 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 82395 |
| IRS990/NondeductibleContributionsInd | 0 | false |
| IRS990/OccupancyGrp/TotalAmt | 0 | 0 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 2189 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 2189 |
| IRS990/OfficerMailingAddressInd | 0 | false |
| IRS990/OperateHospitalInd | 0 | false |
| IRS990/Organization501cInd | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 0 |
| IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt | 0 | 12108 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 12108 |
| IRS990/OtherExpensesGrp/Desc | 0 | Fundraising Services |
| IRS990/OtherExpensesGrp/Desc | 1 | Payroll Processing Fees |
| IRS990/OtherExpensesGrp/Desc | 2 | Taxes |
| IRS990/OtherExpensesGrp/Desc | 3 | Licenses, fees and taxes |
| IRS990/OtherExpensesGrp/FundraisingAmt | 0 | 4332 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 564 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 770 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 731 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 4332 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 770 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 731 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 564 |
| IRS990/OtherInd | 0 | X |
| IRS990/OtherRevenueMiscGrp/BusinessCd | 0 | 900099 |
| IRS990/OtherRevenueMiscGrp/Desc | 0 | Other Income |
| IRS990/OtherRevenueMiscGrp/RelatedOrExemptFuncIncomeAmt | 0 | 15 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 0 | 15 |
| IRS990/OtherRevenueTotalAmt | 0 | 15 |
| IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt | 0 | 4869 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 4869 |
| IRS990/OthNotesLoansReceivableNetGrp/EOYAmt | 0 | 0 |
| IRS990/PartialLiquidationInd | 0 | false |
| IRS990/PaymentsToAffiliatesGrp/TotalAmt | 0 | 0 |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 5607 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 5607 |
| IRS990/PensionPlanContributionsGrp/TotalAmt | 0 | 0 |
| IRS990/PledgesAndGrantsReceivableGrp/EOYAmt | 0 | 0 |
| IRS990/PoliticalCampaignActyInd | 0 | true |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 0 |
| IRS990/PrincipalOfficerNm | 0 | BEAUDRY KOCK |
| IRS990/PriorPeriodAdjustmentsAmt | 0 | 3851 |
| IRS990/ProfessionalFundraisingInd | 0 | false |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 0 | 541610 |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | Consulting and Sales |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 18261 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 18261 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | false |
| IRS990/PYExcessBenefitTransInd | 0 | false |
| IRS990/PymtTravelEntrtnmntPubOfclGrp/TotalAmt | 0 | 0 |
| IRS990/RcvblFromDisqualifiedPrsnGrp/EOYAmt | 0 | 0 |
| IRS990/ReceivablesFromOfficersEtcGrp/EOYAmt | 0 | 0 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | 77319 |
| IRS990/RegularMonitoringEnfrcInd | 0 | true |
| IRS990/RelatedEntityInd | 0 | false |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | false |
| IRS990/ReportInvestmentsOtherSecInd | 0 | false |
| IRS990/ReportLandBuildingEquipmentInd | 0 | false |
| IRS990/ReportOtherAssetsInd | 0 | false |
| IRS990/ReportOtherLiabilitiesInd | 0 | false |
| IRS990/ReportProgramRelatedInvstInd | 0 | false |
| IRS990/RevenueAmt | 0 | 18261 |
| IRS990/RoyaltiesGrp/TotalAmt | 0 | 0 |
| IRS990/RoyaltiesRevenueGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/SavingsAndTempCashInvstGrp/EOYAmt | 0 | 0 |
| 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 |
| IRS990ScheduleC/Form1120POLFiledInd | 0 | false |
| IRS990ScheduleC/PoliticalExpendituresAmt | 0 | 30000 |
| IRS990/ScheduleJRequiredInd | 0 | false |
| IRS990/ScheduleORequiredInd | 0 | true |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | The tax return is prepared by an outside accounting firm. After completion of said returns, the organization is sent a draft of the tax returns to be reviewed and examined. The organization makes copies of the returns and distributes to those individuals charged with governance. Those individuals at that time can review and if applicable discuss any line items in the return with the accountant who has prepared the return. If all items are found to be acceptable, an authorization is signed and provided to authorize the outside accounting firm to process, sign and provide copies of the returns to be filed (paper or electronically) with the designated governmental agencies. The tax returns are then signed by the organization, stamped and mailed with certified return receipt or the signed form 8879 is provided to the outside accounting firm allowing electronic filing. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | Yes. Conflicted Board members are excluded from all ad hoc and regular Board meeting discussions and committee meetings where they have any sort of financial or other potentially conflicted interest |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 2 | Compensation is determined at the discretion of the Board of Directors |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 3 | Can be provided upon request |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 4 | Governing documents are available for public inspection at the principal place of business.The conflict of interest policy and the organization's financial statements are available upon request. |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | Form 990, Part VI, Line 11b: Form 990 Review Process |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | Form 990, Part VI, Line 12c: Explanation of Monitoring and Enforcement of Conflicts |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | Form 990, Part VI, Line 15a: Compensation Review & Approval Process - CEO, Top Management |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 3 | Form 990, Part VI, Line 18: Explanation of Other Means Forms Available For Public Inspection |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 4 | Form 990, Part VI, Line 19: Other Organization Documents Publicly Available |
| IRS990/SchoolOperatingInd | 0 | false |
| IRS990/SignificantChangeInd | 0 | false |
| IRS990/SignificantNewProgramSrvcInd | 0 | false |
| IRS990/StatesWhereCopyOfReturnIsFldCd | 0 | CA |
| IRS990/SubjectToExcsTaxNetInvstIncInd | 0 | false |
| IRS990/SubjectToProxyTaxInd | 0 | false |
| IRS990/SubjToTaxRmnrtnExPrchtPymtInd | 0 | false |
| IRS990/TaxablePartyNotificationInd | 0 | false |
| IRS990/TaxExemptBondsInd | 0 | false |
| IRS990/TerminateOperationsInd | 0 | false |
| IRS990/TotalAssetsBOYAmt | 0 | 1225 |
| IRS990/TotalAssetsEOYAmt | 0 | 83246 |
| IRS990/TotalAssetsGrp/BOYAmt | 0 | 1225 |
| IRS990/TotalAssetsGrp/EOYAmt | 0 | 83246 |
| IRS990/TotalCompGreaterThan150KInd | 0 | false |
| IRS990/TotalContributionsAmt | 0 | 199165 |
| IRS990/TotalEmployeeCnt | 0 | 1 |
| IRS990/TotalFunctionalExpensesGrp/FundraisingAmt | 0 | 4332 |
| IRS990/TotalFunctionalExpensesGrp/ManagementAndGeneralAmt | 0 | 12281 |
| IRS990/TotalFunctionalExpensesGrp/ProgramServicesAmt | 0 | 113965 |
| IRS990/TotalFunctionalExpensesGrp/TotalAmt | 0 | 130578 |
| IRS990/TotalGrossUBIAmt | 0 | 0 |
| IRS990/TotalLiabilitiesEOYAmt | 0 | 851 |
| IRS990/TotalLiabilitiesGrp/BOYAmt | 0 | 0 |
| IRS990/TotalLiabilitiesGrp/EOYAmt | 0 | 851 |
| IRS990/TotalNetAssetsFundBalanceGrp/BOYAmt | 0 | 1225 |
| IRS990/TotalNetAssetsFundBalanceGrp/EOYAmt | 0 | 82395 |
| IRS990/TotalProgramServiceExpensesAmt | 0 | 113965 |
| IRS990/TotalProgramServiceRevenueAmt | 0 | 18261 |
| IRS990/TotalReportableCompFromOrgAmt | 0 | 72282 |
| IRS990/TotalRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 8732 |
| IRS990/TotalRevenueGrp/TotalRevenueColumnAmt | 0 | 207897 |
| IRS990/TotalVolunteersCnt | 0 | 250 |
| IRS990/TotLiabNetAssetsFundBalanceGrp/BOYAmt | 0 | 1225 |
| IRS990/TotLiabNetAssetsFundBalanceGrp/EOYAmt | 0 | 83246 |
| IRS990/TravelGrp/ProgramServicesAmt | 0 | 159 |
| IRS990/TravelGrp/TotalAmt | 0 | 159 |
| IRS990/TypeOfOrganizationCorpInd | 0 | X |
| IRS990/UnrelatedBusIncmOverLimitInd | 0 | false |
| IRS990/UponRequestInd | 0 | X |
| IRS990/USAddress/AddressLine1Txt | 0 | 189 Fair Oaks St |
| IRS990/USAddress/CityNm | 0 | San Francisco |
| IRS990/USAddress/StateAbbreviationCd | 0 | CA |
| IRS990/USAddress/ZIPCd | 0 | 94110 |
| IRS990/VotingMembersGoverningBodyCnt | 0 | 10 |
| IRS990/VotingMembersIndependentCnt | 0 | 9 |
| IRS990/WebsiteAddressTxt | 0 | WWW.SEAMLESSBAYAREA.ORG |
| IRS990/WhistleblowerPolicyInd | 0 | false |
| ReturnHeader/AdditionalFilerInformation/TrustedCustomerGrp/AuthenticationAssuranceLevelCd | 0 | AAL1 |
| ReturnHeader/AdditionalFilerInformation/TrustedCustomerGrp/FederatedAssuranceLevelCd | 0 | FAL1 |
| ReturnHeader/AdditionalFilerInformation/TrustedCustomerGrp/IdentityAssuranceLevelCd | 0 | IAL1 |
| ReturnHeader/AdditionalFilerInformation/TrustedCustomerGrp/TrustedCustomerCd | 0 | 2 |
| ReturnHeader/BuildTS | 0 | 2022-09-23 18:48:47Z |
| ReturnHeader/BusinessOfficerGrp/DiscussWithPaidPreparerInd | 0 | true |
| ReturnHeader/BusinessOfficerGrp/PersonNm | 0 | Felix Pomerantz |
| ReturnHeader/BusinessOfficerGrp/PersonTitleTxt | 0 | Director |
| ReturnHeader/BusinessOfficerGrp/SignatureDt | 0 | 2022-10-25 |
| ReturnHeader/Filer/BusinessName/BusinessNameLine1Txt | 0 | Seamless Bay Area |
| ReturnHeader/Filer/BusinessName/BusinessNameLine2Txt | 0 | FKA Seamless Bay Area Action Fund |
| ReturnHeader/Filer/BusinessNameControlTxt | 0 | SEAM |
| ReturnHeader/Filer/EIN | 0 | 845085090 |
| ReturnHeader/Filer/PhoneNum | 0 | 4156121664 |
| ReturnHeader/Filer/USAddress/AddressLine1Txt | 0 | 189 Fair Oaks St |
| ReturnHeader/Filer/USAddress/CityNm | 0 | San Francisco |
| ReturnHeader/Filer/USAddress/StateAbbreviationCd | 0 | CA |
| ReturnHeader/Filer/USAddress/ZIPCd | 0 | 94110 |
| ReturnHeader/PreparerFirmGrp/PreparerFirmEIN | 0 | 811489821 |
| ReturnHeader/PreparerFirmGrp/PreparerFirmName/BusinessNameLine1Txt | 0 | HEALY AND ASSOCIATES |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/AddressLine1Txt | 0 | 1200 CONCORD AVE STE 250 |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/CityNm | 0 | CONCORD |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/StateAbbreviationCd | 0 | CA |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/ZIPCd | 0 | 94520 |
| ReturnHeader/PreparerPersonGrp/PhoneNum | 0 | 9256030800 |
| ReturnHeader/PreparerPersonGrp/PreparerPersonNm | 0 | Suzanne R Healy |
| ReturnHeader/ReturnTs | 0 | 2022-10-25T09:10:19-07:00 |
| ReturnHeader/ReturnTypeCd | 0 | 990 |
| ReturnHeader/SigningOfficerGrp/PersonFullName/PersonFirstNm | 0 | Felix |
| ReturnHeader/SigningOfficerGrp/PersonFullName/PersonLastNm | 0 | Pomerantz |
| ReturnHeader/TaxPeriodBeginDt | 0 | 2021-01-01 |
| ReturnHeader/TaxPeriodEndDt | 0 | 2021-12-31 |
| ReturnHeader/TaxYr | 0 | 2021 |