| IRS990/AccountantCompileOrReviewInd | 0 | 0 |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 107485 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 15972 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | TO ENHANCE EQUITY BY PROVIDING SCHOLARSHIPS TO LOW INCOME FAMILIES. |
| IRS990/AdvertisingGrp/FundraisingAmt | 0 | 18842 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 18842 |
| IRS990/AllOtherContributionsAmt | 0 | 8036379 |
| IRS990/AllOtherExpensesGrp/ManagementAndGeneralAmt | 0 | 400 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 400 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | 1 |
| IRS990/AuditCommitteeInd | 0 | 1 |
| IRS990/BackupWthldComplianceInd | 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 | 227064 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 46726 |
| IRS990/ChangeToOrgDocumentsInd | 0 | 0 |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/CollectionsOfArtInd | 0 | 0 |
| IRS990/CompCurrentOfcrDirectorsGrp/FundraisingAmt | 0 | 287320 |
| IRS990/CompCurrentOfcrDirectorsGrp/ManagementAndGeneralAmt | 0 | 71920 |
| IRS990/CompCurrentOfcrDirectorsGrp/ProgramServicesAmt | 0 | 71920 |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 431160 |
| IRS990/CompensationFromOtherSrcsInd | 0 | 0 |
| IRS990/CompensationProcessCEOInd | 0 | 1 |
| IRS990/CompensationProcessOtherInd | 0 | 0 |
| IRS990/ConferencesMeetingsGrp/FundraisingAmt | 0 | 4929 |
| IRS990/ConferencesMeetingsGrp/ManagementAndGeneralAmt | 0 | 21553 |
| IRS990/ConferencesMeetingsGrp/ProgramServicesAmt | 0 | 6463 |
| IRS990/ConferencesMeetingsGrp/TotalAmt | 0 | 32945 |
| IRS990/ConflictOfInterestPolicyInd | 0 | 1 |
| IRS990/ConservationEasementsInd | 0 | 0 |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | 0 |
| IRS990/CreditCounselingInd | 0 | 0 |
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| IRS990/CYContributionsGrantsAmt | 0 | 8036379 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 7834003 |
| IRS990/CYInvestmentIncomeAmt | 0 | 537581 |
| IRS990/CYOtherExpensesAmt | 0 | 629914 |
| IRS990/CYOtherRevenueAmt | 0 | 0 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 0 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | -1056769 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 1166812 |
| IRS990/CYTotalExpensesAmt | 0 | 9630729 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 731314 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 8573960 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | 0 |
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| IRS990/DeductibleNonCashContriInd | 0 | 1 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 0 |
| IRS990/DepreciationDepletionGrp/FundraisingAmt | 0 | 4734 |
| IRS990/DepreciationDepletionGrp/ManagementAndGeneralAmt | 0 | 1816 |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 12906 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 19456 |
| 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. |
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| IRS990/DocumentRetentionPolicyInd | 0 | 1 |
| IRS990/DonorAdvisedFundInd | 0 | 0 |
| IRS990/DonorRestrictionNetAssetsGrp/BOYAmt | 0 | 21697730 |
| IRS990/DonorRestrictionNetAssetsGrp/EOYAmt | 0 | 20372367 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | 0 |
| IRS990/ElectionOfBoardMembersInd | 0 | 0 |
| IRS990/EmployeeCnt | 0 | 16 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | 1 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | 0 |
| IRS990/ExpenseAmt | 0 | 8687789 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 0 |
| IRS990/FederalGrantAuditRequiredInd | 0 | 0 |
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| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 1941 |
| IRS990/FeesForServicesAccountingGrp/ProgramServicesAmt | 0 | 32505 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 48515 |
| IRS990/FeesForServicesLegalGrp/FundraisingAmt | 0 | 56151 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 56151 |
| IRS990/FeesForServicesOtherGrp/FundraisingAmt | 0 | 53801 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 18967 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 12505 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 85273 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/ManagementAndGeneralAmt | 0 | 7500 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/TotalAmt | 0 | 7500 |
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| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | 0 |
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| 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 |
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| 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 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 22 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 23 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 24 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 25 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 26 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 27 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 28 | 50.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 29 | 50.00 |
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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/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/IndividualTrusteeOrDirectorInd | 21 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 22 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 23 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 24 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 25 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 26 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 27 | 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/OfficerInd | 5 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 6 | 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/OtherCompensationAmt | 22 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 23 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 24 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 25 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 26 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 27 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 28 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 29 | 0 |
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| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | JAMES H HERBERT II |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | STEVEN S KLEIN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | JOHN COUCH |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | JEREMY PETERS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | RICHARD C BARKER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | WILLIAM T RING |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | ROBERT G BARRETT |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | RICHARD J BERTERO |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | CRYSTAL BRYANT |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | RICHARD CHOW |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | JAMES P CONN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | KENNETH T DERR |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 13 | JEFFREY G EDWARDS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 14 | EDWARD JAMIESON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 15 | RUPERT JOHNSON JR |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 16 | JOHN E KERRIGAN JR |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 17 | THEODORE KRUTTSCHNITT |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 18 | MICHAEL MCCARTHY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 19 | EDWARD MCDERMOTT |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 20 | STEPHEN L MILLHAM |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 21 | J WILLIAM MORRIS III |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 22 | TIMOTHY RANZETTA |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 23 | MARTIN ROMO |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 24 | ERIC A SCHWARTZ |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 25 | WARREN E SPIEKER JR |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 26 | MICHAEL W WILSEY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 27 | JANISHA SABNANI |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 28 | RACHEL ELGINSMITH |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 29 | CHRISTINE WEISS |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 0 |
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| 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 |
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| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 18 | 0 |
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| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 24 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 25 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 26 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 27 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 28 | 194795 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 29 | 197510 |
| 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/ReportableCompFromRltdOrgAmt | 22 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 23 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 24 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 25 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 26 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 27 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 28 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 29 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | CHAIRMAN |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | VICE PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | VICE PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | TREASURER |
| 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 |
| 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 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 22 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 23 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 24 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 25 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 26 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 27 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 28 | CHIEF EXECUTIVE OFFICER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 29 | CHIEF ADV. OFFICER |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | 1 |
| IRS990/FormationYr | 0 | 1997 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 0 |
| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | 1 |
| IRS990/FundraisingActivitiesInd | 0 | 0 |
| IRS990/GainOrLossGrp/SecuritiesAmt | 0 | -46 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 28 |
| IRS990/GrantAmt | 0 | 7834003 |
| IRS990/GrantsToDomesticIndividualsGrp/ProgramServicesAmt | 0 | 7834003 |
| IRS990/GrantsToDomesticIndividualsGrp/TotalAmt | 0 | 7834003 |
| IRS990/GrantsToIndividualsInd | 0 | 1 |
| IRS990/GrantsToOrganizationsInd | 0 | 0 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
| IRS990/GrossAmountSalesAssetsGrp/SecuritiesAmt | 0 | 63280072 |
| IRS990/GrossReceiptsAmt | 0 | 71854078 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 1 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 1 |
| IRS990/IndependentVotingMemberCnt | 0 | 28 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 2 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InformationTechnologyGrp/FundraisingAmt | 0 | 22276 |
| IRS990/InformationTechnologyGrp/ManagementAndGeneralAmt | 0 | 15141 |
| IRS990/InformationTechnologyGrp/ProgramServicesAmt | 0 | 33118 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 70535 |
| IRS990/InsuranceGrp/FundraisingAmt | 0 | 9553 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 1161 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 3164 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 13878 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 537627 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 537627 |
| IRS990/InvestmentInJointVentureInd | 0 | 0 |
| IRS990/InvestmentsOtherSecuritiesGrp/BOYAmt | 0 | 285000 |
| IRS990/InvestmentsOtherSecuritiesGrp/EOYAmt | 0 | 360000 |
| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 18526117 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 18917489 |
| IRS990/IRPDocumentCnt | 0 | 7 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 66719 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 56219 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 41898 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 108617 |
| IRS990/LegalDomicileStateCd | 0 | CA |
| IRS990/LessCostOthBasisSalesExpnssGrp/SecuritiesAmt | 0 | 63280118 |
| 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 | 23395223 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 22575742 |
| IRS990/NetGainOrLossInvestmentsGrp/ExclusionAmt | 0 | -46 |
| IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt | 0 | -46 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | 237288 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 1697493 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 2203375 |
| IRS990/NoncashContributionsAmt | 0 | 266012 |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OccupancyGrp/FundraisingAmt | 0 | 38186 |
| IRS990/OccupancyGrp/ManagementAndGeneralAmt | 0 | 5267 |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 88223 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 131676 |
| IRS990/OfficeExpensesGrp/FundraisingAmt | 0 | 5674 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 939 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 13113 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 19726 |
| IRS990/OfficerMailingAddressInd | 0 | 0 |
| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 9036 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 475099 |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 0 |
| IRS990/OtherEmployeeBenefitsGrp/FundraisingAmt | 0 | 11023 |
| IRS990/OtherEmployeeBenefitsGrp/ManagementAndGeneralAmt | 0 | 5453 |
| IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt | 0 | 65561 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 82037 |
| IRS990/OtherExpensesGrp/Desc | 0 | BAD DEBT EXPENSE |
| IRS990/OtherExpensesGrp/Desc | 1 | PROGRAM COSTS |
| IRS990/OtherExpensesGrp/FundraisingAmt | 0 | 110000 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 11369 |