| IRS990/AccountantCompileOrReviewInd | 0 | 0 |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 53723 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 19909 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | TO ENHANCE EQUITY BY PROVIDING SCHOLARSHIPS TO LOW INCOME FAMILIES. |
| IRS990/AdvertisingGrp/FundraisingAmt | 0 | 9483 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 9483 |
| IRS990/AllOtherContributionsAmt | 0 | 11104240 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | 1 |
| IRS990/AuditCommitteeInd | 0 | 1 |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | RACHEL ELGINSMITH |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 4159865650 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 475 14TH STREET 290 |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | OAKLAND |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | CA |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 94612 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | 0 |
| IRS990/BusinessRlnWithFamMemInd | 0 | 0 |
| IRS990/BusinessRlnWithOrgMemInd | 0 | 0 |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 190457 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 356797 |
| IRS990/ChangeToOrgDocumentsInd | 0 | 0 |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/CollectionsOfArtInd | 0 | 0 |
| IRS990/CompCurrentOfcrDirectorsGrp/FundraisingAmt | 0 | 288341 |
| IRS990/CompCurrentOfcrDirectorsGrp/ManagementAndGeneralAmt | 0 | 78841 |
| IRS990/CompCurrentOfcrDirectorsGrp/ProgramServicesAmt | 0 | 67578 |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 434760 |
| IRS990/CompensationFromOtherSrcsInd | 0 | 0 |
| IRS990/CompensationProcessCEOInd | 0 | 1 |
| IRS990/CompensationProcessOtherInd | 0 | 0 |
| IRS990/ConferencesMeetingsGrp/FundraisingAmt | 0 | 7366 |
| IRS990/ConferencesMeetingsGrp/ManagementAndGeneralAmt | 0 | 2710 |
| IRS990/ConferencesMeetingsGrp/ProgramServicesAmt | 0 | 10362 |
| IRS990/ConferencesMeetingsGrp/TotalAmt | 0 | 20438 |
| IRS990/ConflictOfInterestPolicyInd | 0 | 1 |
| IRS990/ConservationEasementsInd | 0 | 0 |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | 1 |
| IRS990/CreditCounselingInd | 0 | 0 |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 11691478 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 7758315 |
| IRS990/CYInvestmentIncomeAmt | 0 | 498072 |
| IRS990/CYOtherExpensesAmt | 0 | 676401 |
| IRS990/CYOtherRevenueAmt | 0 | 0 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 0 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 2225005 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 1529829 |
| IRS990/CYTotalExpensesAmt | 0 | 9964545 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 946353 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 12189550 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | 0 |
| IRS990/DeductibleArtContributionInd | 0 | 0 |
| IRS990/DeductibleNonCashContriInd | 0 | 0 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 0 |
| IRS990/DepreciationDepletionGrp/FundraisingAmt | 0 | 3827 |
| IRS990/DepreciationDepletionGrp/ManagementAndGeneralAmt | 0 | 1786 |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 6633 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 12246 |
| IRS990/Desc | 0 | THE BASIC FUND (THE FUND) IS A PRIVATELY FUNDED PROGRAM DEDICATED TO BROADENING THE EDUCATIONAL EQUITY BY HELPING LOW-INCOME FAMILIES IN ALAMEDA, CONTRA COSTA, MARIN, NAPA, SAN FRANCISCO, SAN MATEO, SANTA CLARA, SOLANO, AND SONOMA COUNTIES AFFORD THE COST OF TUITION AT PRIVATE OR PAROCHIAL SCHOOLS OF THEIR CHOICE. THE SCHOLARSHIPS ARE OFFERED TO STUDENTS IN PRE-KINDERGARTEN THROUGH EIGHTH GRADE. |
| IRS990/DescribedInSection501c3Ind | 0 | 1 |
| IRS990/DisregardedEntityInd | 0 | 0 |
| IRS990/DocumentRetentionPolicyInd | 0 | 1 |
| IRS990/DonorAdvisedFundInd | 0 | 0 |
| IRS990/DonorRestrictionNetAssetsGrp/BOYAmt | 0 | 18132440 |
| IRS990/DonorRestrictionNetAssetsGrp/EOYAmt | 0 | 19273767 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | 0 |
| IRS990/ElectionOfBoardMembersInd | 0 | 0 |
| IRS990/EmployeeCnt | 0 | 13 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | 1 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | 0 |
| IRS990/ExpenseAmt | 0 | 8712795 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 0 |
| IRS990/FederalGrantAuditRequiredInd | 0 | 0 |
| IRS990/FeesForServicesAccountingGrp/FundraisingAmt | 0 | 1132 |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 426 |
| IRS990/FeesForServicesAccountingGrp/ProgramServicesAmt | 0 | 1442 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 3000 |
| IRS990/FeesForServicesLegalGrp/FundraisingAmt | 0 | 543 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 543 |
| IRS990/FeesForServicesOtherGrp/FundraisingAmt | 0 | 277251 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 58708 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 32534 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 368493 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/ManagementAndGeneralAmt | 0 | 1632 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/TotalAmt | 0 | 1632 |
| IRS990/ForeignActivitiesInd | 0 | 0 |
| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 0 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 1 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 2 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 3 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 4 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 5 | 1.00 |
| 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/AverageHoursPerWeekRltdOrgRt | 10 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 11 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 12 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 13 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 14 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 15 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 16 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 17 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 18 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 19 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 20 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 21 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 50.00 |
| 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 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 11 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 12 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 13 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 14 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 15 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 16 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 17 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 18 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 19 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 20 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 21 | 50.00 |
| 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/IndividualTrusteeOrDirectorInd | 9 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 10 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 11 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 12 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 13 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 14 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 15 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 16 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 17 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 18 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 19 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 20 | X |
| IRS990/Form990PartVIISectionAGrp/KeyEmployeeInd | 0 | 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/OtherCompensationAmt | 14 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 15 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 16 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 17 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 18 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 19 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 20 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 21 | 0 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | RACHEL ELGINSMITH |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | JAMES H HERBERT II |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | BRIAN GRIGGS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | JOHN COUCH |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | JEREMY PETERS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | JANISHA SABNANI |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | LAUREL BROWMAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | CRYSTAL BRYANT |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | JONO GRAYSON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | JURGEN HUCK |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | RUPERT H JOHNSON JR |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | JOHN C KERN JR |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | JOHN E KERRIGAN JR |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 13 | TED KRUTTSCHNITT |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 14 | RONNIE LOTT |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 15 | MICHAEL MCCARTHY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 16 | TIM RANZETTA |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 17 | WILLIAM T RING |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 18 | MARTIN ROMO |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 19 | ERIC A SCHWARTZ |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 20 | WARREN E SPIEKER JR |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 21 | LAURA REED |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 199900 |
| 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/ReportableCompFromOrgAmt | 14 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 15 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 16 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 17 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 18 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 19 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 20 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 21 | 205800 |
| 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 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 14 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 15 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 16 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 17 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 18 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 19 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 20 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 21 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | CHIEF EXECUTIVE OFFICER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | CHAIRMAN |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | VICE PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | DEPUTY GENERAL COUNSEL |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 13 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 14 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 15 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 16 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 17 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 18 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 19 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 20 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 21 | CHIEF ADVANCEMENT OFFICER |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | 1 |
| IRS990/FormationYr | 0 | 1997 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 0 |
| IRS990/FSAuditedBasisGrp/ConsolidatedBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | 1 |
| IRS990/FundraisingActivitiesInd | 0 | 0 |
| IRS990/GainOrLossGrp/SecuritiesAmt | 0 | 0 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 20 |
| IRS990/GrantAmt | 0 | 7758315 |
| IRS990/GrantsToDomesticIndividualsGrp/ProgramServicesAmt | 0 | 7758315 |
| IRS990/GrantsToDomesticIndividualsGrp/TotalAmt | 0 | 7758315 |
| IRS990/GrantsToIndividualsInd | 0 | 1 |
| IRS990/GrantsToOrganizationsInd | 0 | 0 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
| IRS990/GrossAmountSalesAssetsGrp/SecuritiesAmt | 0 | 30638873 |
| IRS990/GrossReceiptsAmt | 0 | 42828423 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 1 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 0 |
| IRS990/IndependentVotingMemberCnt | 0 | 20 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 2 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InformationTechnologyGrp/FundraisingAmt | 0 | 16542 |
| IRS990/InformationTechnologyGrp/ManagementAndGeneralAmt | 0 | 4814 |
| IRS990/InformationTechnologyGrp/ProgramServicesAmt | 0 | 17882 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 39238 |
| IRS990/InsuranceGrp/FundraisingAmt | 0 | 1355 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 7475 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 2349 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 11179 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 498072 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 498072 |
| IRS990/InvestmentInJointVentureInd | 0 | 0 |
| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 7797260 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 14138329 |
| IRS990/IRPDocumentCnt | 0 | 0 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 95914 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 27412 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 19439 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 115353 |
| IRS990/LegalDomicileStateCd | 0 | CA |
| IRS990/LessCostOthBasisSalesExpnssGrp/SecuritiesAmt | 0 | 30638873 |
| IRS990/LoanOutstandingInd | 0 | 0 |
| IRS990/LobbyingActivitiesInd | 0 | 0 |
| IRS990/LocalChaptersInd | 0 | 0 |
| IRS990/MaterialDiversionOrMisuseInd | 0 | 0 |
| IRS990/MembersOrStockholdersInd | 0 | 0 |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | 1 |
| IRS990/MinutesOfGoverningBodyInd | 0 | 1 |
| IRS990/MissionDesc | 0 | THE BASIC FUND IS A PRIVATELY FUNDED PROGRAM WHOSE MISSION IS TO ADVANCE EDUCATIONAL EQUITY FOR LOW-INCOME FAMILIES BY HELPING OFFSET THE COST OF TUITION AT PRIVATE SCHOOLS IN THE BAY AREA. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | 0 |
| IRS990/MoreThan5000KToOrgInd | 0 | 0 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 21288198 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 23855319 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | 342116 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 3155758 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 4581552 |
| IRS990/NoncashContributionsAmt | 0 | 19603 |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OccupancyGrp/FundraisingAmt | 0 | 41653 |
| IRS990/OccupancyGrp/ManagementAndGeneralAmt | 0 | 19438 |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 72199 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 133290 |
| IRS990/OfficeExpensesGrp/FundraisingAmt | 0 | 20198 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 4188 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 34509 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 58895 |
| IRS990/OfficerMailingAddressInd | 0 | 0 |
| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 355908 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 336836 |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 0 |
| IRS990/OtherEmployeeBenefitsGrp/FundraisingAmt | 0 | 38596 |
| IRS990/OtherEmployeeBenefitsGrp/ManagementAndGeneralAmt | 0 | 4665 |
| IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt | 0 | 92042 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 135303 |
| IRS990/OtherExpensesGrp/Desc | 0 | PROGRAM COSTS |
| IRS990/OtherExpensesGrp/Desc | 1 | OTHER |
| IRS990/OtherExpensesGrp/FundraisingAmt | 0 | 161 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 590 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 10665 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 277 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 10665 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 1028 |
| IRS990/OtherLiabilitiesGrp/BOYAmt | 0 | 511475 |
| IRS990/OtherLiabilitiesGrp/EOYAmt | 0 | 286186 |
| IRS990/OtherSalariesAndWagesGrp/FundraisingAmt | 0 | 201304 |
| IRS990/OtherSalariesAndWagesGrp/ManagementAndGeneralAmt | 0 | 105569 |
| IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt | 0 | 556220 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 863093 |
| IRS990/PartialLiquidationInd | 0 | 0 |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | 0 |
| IRS990/PayrollTaxesGrp/FundraisingAmt | 0 | 36235 |
| IRS990/PayrollTaxesGrp/ManagementAndGeneralAmt | 0 | 13664 |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 46774 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 96673 |
| IRS990/PledgesAndGrantsReceivableGrp/BOYAmt | 0 | 1910734 |
| IRS990/PledgesAndGrantsReceivableGrp/EOYAmt | 0 | 2377043 |
| IRS990/PoliticalCampaignActyInd | 0 | 0 |
| IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt | 0 | 35755 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 69219 |
| IRS990/PrincipalOfficerNm | 0 | RACHEL ELGINSMITH |
| IRS990/ProfessionalFundraisingInd | 0 | 0 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | 0 |
| IRS990/PYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/PYContributionsGrantsAmt | 0 | 14873471 |
| IRS990/PYExcessBenefitTransInd | 0 | 0 |
| IRS990/PYGrantsAndSimilarPaidAmt | 0 | 15261255 |
| IRS990/PYInvestmentIncomeAmt | 0 | 705780 |
| IRS990/PYOtherExpensesAmt | 0 | 590330 |
| IRS990/PYOtherRevenueAmt | 0 | 0 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 0 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | -1637139 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 1364805 |
| IRS990/PYTotalExpensesAmt | 0 | 17216390 |
| IRS990/PYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/PYTotalRevenueAmt | 0 | 15579251 |
| IRS990/QuidProQuoContributionsInd | 0 | 0 |
| IRS990/RcvFndsToPayPrsnlBnftCntrctInd | 0 | 0 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | 2225005 |
| IRS990/RegularMonitoringEnfrcInd | 0 | 1 |