| IRS990/AccountantCompileOrReviewInd | 0 | 0 |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 180630 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 271493 |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 28160 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 52893 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | AT GESHER JEWISH DAY SCHOOL WE INSPIRE OUR STUDENTS TO BE PASSIONATE ABOUT LEARNING,PRACTICE JUSTICE,KINDNESS AND RESPECT,ASPIRE TO A LIFE GUIDED BY JEWISH VALUES,TORAH, AND COMMUNITY. |
| IRS990/AdvertisingGrp/ProgramServicesAmt | 0 | 39131 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 39131 |
| IRS990/AllOtherContributionsAmt | 0 | 900489 |
| IRS990/AllOtherExpensesGrp/FundraisingAmt | 0 | 836 |
| IRS990/AllOtherExpensesGrp/ManagementAndGeneralAmt | 0 | 2137 |
| IRS990/AllOtherExpensesGrp/ProgramServicesAmt | 0 | 17795 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 20768 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | 1 |
| IRS990/AuditCommitteeInd | 0 | 1 |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | MICHELLE NEWMAN LOMASKY |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 7039789789 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 4800 MATTIE MOORE CT |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | FAIRFAX |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | VA |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 22030 |
| IRS990/BusinessRlnWithFamMemInd | 0 | 0 |
| IRS990/BusinessRlnWithOfficerEntInd | 0 | 0 |
| IRS990/BusinessRlnWithOrgMemInd | 0 | 0 |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 251195 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 2353840 |
| IRS990/ChangeToOrgDocumentsInd | 0 | 0 |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/CollectionsOfArtInd | 0 | 0 |
| IRS990/CompCurrentOfcrDirectorsGrp/ManagementAndGeneralAmt | 0 | 25600 |
| IRS990/CompCurrentOfcrDirectorsGrp/ProgramServicesAmt | 0 | 102400 |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 128000 |
| IRS990/CompensationFromOtherSrcsInd | 0 | 0 |
| IRS990/CompensationProcessCEOInd | 0 | 1 |
| IRS990/CompensationProcessOtherInd | 0 | 1 |
| IRS990/ConferencesMeetingsGrp/ProgramServicesAmt | 0 | 25768 |
| IRS990/ConferencesMeetingsGrp/TotalAmt | 0 | 25768 |
| IRS990/ConflictOfInterestPolicyInd | 0 | 1 |
| IRS990/ConservationEasementsInd | 0 | 0 |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | 0 |
| IRS990/ContriRptFundraisingEventAmt | 0 | 19222 |
| IRS990/CreditCounselingInd | 0 | 0 |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 919711 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 931049 |
| IRS990/CYInvestmentIncomeAmt | 0 | 638839 |
| IRS990/CYOtherExpensesAmt | 0 | 1670675 |
| IRS990/CYOtherRevenueAmt | 0 | 250290 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 2604230 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | -26322 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 1837668 |
| IRS990/CYTotalExpensesAmt | 0 | 4439392 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 162706 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 4413070 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | 0 |
| IRS990/DeductibleArtContributionInd | 0 | 0 |
| IRS990/DeductibleNonCashContriInd | 0 | 1 |
| IRS990/DeferredRevenueGrp/BOYAmt | 0 | 395620 |
| IRS990/DeferredRevenueGrp/EOYAmt | 0 | 358869 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 0 |
| IRS990/DepreciationDepletionGrp/FundraisingAmt | 0 | 20873 |
| IRS990/DepreciationDepletionGrp/ManagementAndGeneralAmt | 0 | 53334 |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 303720 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 377927 |
| IRS990/Desc | 0 | GESHER'S CURRICULUM IS DESIGNED TO ENCOURAGE ELEMENTARY AND MIDDLE SCHOOL-AGED CHILDREN TO ACHIEVE PERSONAL ACADEMIC SUCCESS IN BOTH GENERAL AND JEWISH STUDIES. THE GENERAL STUDIES CURRICULUM STRESSES READING, LANGUAGE ARTS, MATHEMATICS, SCIENCE AND SOCIAL STUDIES. THE JEWISH STUDIES CURRICULUM INCLUDES HEBREW LANGUAGE, TORAH, PRAYER, CUSTOMS AND CEREMONIES, RABBINIC LITERATURE, JEWISH HISTORY AND ETHICS. 116 STUDENTS ENROLLED (IN 2017-2018). |
| IRS990/DescribedInSection501c3Ind | 0 | 1 |
| IRS990/DisregardedEntityInd | 0 | 0 |
| IRS990/DocumentRetentionPolicyInd | 0 | 1 |
| IRS990/DonorAdvisedFundInd | 0 | 0 |
| IRS990/ElectionOfBoardMembersInd | 0 | 0 |
| IRS990/EmployeeCnt | 0 | 54 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | 1 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | 0 |
| IRS990/ExpenseAmt | 0 | 3745149 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 0 |
| IRS990/FederalGrantAuditRequiredInd | 0 | 0 |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 21943 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 21943 |
| IRS990/FeesForServicesLegalGrp/ManagementAndGeneralAmt | 0 | 55 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 55 |
| IRS990/FeesForServicesOtherGrp/FundraisingAmt | 0 | 2041 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 9610 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 29703 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 41354 |
| IRS990/ForeignActivitiesInd | 0 | 0 |
| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 3.00 |
| 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 | 40.00 |
| 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/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 | 41003 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | VICKI FISHMAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | PEGGY EPHRATH |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | SUSAN HAUS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | PHILIP BLUMENTHAL |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | YVONNE FUJIMOTO |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | SETH FELDMAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | ELIOT GOLDBERG |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | CHERYL LITMAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | GLENN TAUBMAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | JANE SHICHMAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | DAVID MARGOLIS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | DREW KARR |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | HOWARD NACHMAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 13 | ADAM KRISCHER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 14 | DAVID LITMAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 15 | ALEXANDER STILLMAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 16 | DANIEL STROUSE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 17 | DANIEL FINKEL |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 0 |
| 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 | 122694 |
| 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/TitleTxt | 0 | PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | VP - DEVELOPMENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | VP - FUNDRAISING |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | VP - STRATEGIC PLANNING |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | SECRETARY |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | IMMEDIATE PAST PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | BUDGET COMMITTEE CHAIR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | PERSONNEL COMMITTEE CHAIR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | COMMITTEE OF TRUSTEES CHAIR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | AUDIT COMMITTEE CHAIR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | FINANCE COMMITTEE CHAIR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | DIRECTOR AT LARGE 1 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 13 | DIRECTOR AT LARGE 2 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 14 | DIRECTOR AT LARGE 3 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 15 | DIRECTOR AT LARGE 4 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 16 | PRESIDENTIAL APPOINTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 17 | HEAD OF SCHOOL |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | 1 |
| IRS990/FormationYr | 0 | 1982 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 0 |
| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | 1 |
| IRS990/FundraisingActivitiesInd | 0 | 1 |
| IRS990/FundraisingAmt | 0 | 19222 |
| IRS990/FundraisingDirectExpensesAmt | 0 | 33790 |
| IRS990/FundraisingGrossIncomeAmt | 0 | 0 |
| IRS990/GainOrLossGrp/OtherAmt | 0 | 622148 |
| IRS990/GainOrLossGrp/SecuritiesAmt | 0 | 14092 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 17 |
| IRS990/GrantAmt | 0 | 931049 |
| IRS990/GrantsToDomesticIndividualsGrp/ProgramServicesAmt | 0 | 931049 |
| IRS990/GrantsToDomesticIndividualsGrp/TotalAmt | 0 | 931049 |
| IRS990/GrantsToIndividualsInd | 0 | 1 |
| IRS990/GrantsToOrganizationsInd | 0 | 0 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
| IRS990/GrossAmountSalesAssetsGrp/OtherAmt | 0 | 3000000 |
| IRS990/GrossAmountSalesAssetsGrp/SecuritiesAmt | 0 | 14092 |
| IRS990/GrossReceiptsAmt | 0 | 6824712 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 1 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 1 |
| IRS990/IndependentVotingMemberCnt | 0 | 17 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 1 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InformationTechnologyGrp/FundraisingAmt | 0 | 1805 |
| IRS990/InformationTechnologyGrp/ManagementAndGeneralAmt | 0 | 4612 |
| IRS990/InformationTechnologyGrp/ProgramServicesAmt | 0 | 49433 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 55850 |
| IRS990/InsuranceGrp/FundraisingAmt | 0 | 1045 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 2670 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 16820 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 20535 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 2599 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 2599 |
| IRS990/InvestmentInJointVentureInd | 0 | 0 |
| IRS990/InvestmentsOtherSecuritiesGrp/BOYAmt | 0 | 207618 |
| IRS990/InvestmentsOtherSecuritiesGrp/EOYAmt | 0 | 217356 |
| IRS990/IRPDocumentCnt | 0 | 22 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 4480452 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 13022810 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 10278979 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 14759431 |
| IRS990/LegalDomicileStateCd | 0 | VA |
| IRS990/LessCostOthBasisSalesExpnssGrp/OtherAmt | 0 | 2377852 |
| IRS990/LessCostOthBasisSalesExpnssGrp/SecuritiesAmt | 0 | 0 |
| 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 | AT GESHER JEWISH DAY SCHOOL WE INSPIRE OUR STUDENTS TO BE PASSIONATE ABOUT LEARNING, PRACTICE JUSTICE, KINDNESS AND RESPECT, ASPIRE TO A LIFE GUIDED BY JEWISH VALUES, TORAH, AND COMMUNITY. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | 0 |
| IRS990/MoreThan5000KToOrgInd | 0 | 0 |
| IRS990/MortgNotesPyblScrdInvstPropGrp/BOYAmt | 0 | 6123806 |
| IRS990/MortgNotesPyblScrdInvstPropGrp/EOYAmt | 0 | 5020928 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 7688549 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 7663235 |
| IRS990/NetGainOrLossInvestmentsGrp/ExclusionAmt | 0 | 636240 |
| IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt | 0 | 636240 |
| IRS990/NetIncmFromFundraisingEvtGrp/ExclusionAmt | 0 | -33790 |
| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | -33790 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | 1008 |
| IRS990/NoncashContributionsAmt | 0 | 73031 |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OccupancyGrp/FundraisingAmt | 0 | 23286 |
| IRS990/OccupancyGrp/ManagementAndGeneralAmt | 0 | 60651 |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 338813 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 422750 |
| IRS990/OfficeExpensesGrp/FundraisingAmt | 0 | 2382 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 45156 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 35665 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 83203 |
| IRS990/OfficerMailingAddressInd | 0 | 0 |
| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsSFAS117Ind | 0 | X |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 0 |
| IRS990/OtherEmployeeBenefitsGrp/FundraisingAmt | 0 | 5563 |
| IRS990/OtherEmployeeBenefitsGrp/ManagementAndGeneralAmt | 0 | 14215 |
| IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt | 0 | 80946 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 100724 |
| IRS990/OtherExpensesGrp/Desc | 0 | FACILITIES REPAIRS&MAIN |
| IRS990/OtherExpensesGrp/Desc | 1 | TRANSPORTATION |
| IRS990/OtherExpensesGrp/Desc | 2 | INSTRUCTION |
| IRS990/OtherExpensesGrp/Desc | 3 | ALL OTHER EXPENSES |
| IRS990/OtherExpensesGrp/FundraisingAmt | 0 | 8943 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 22850 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 1 | 49180 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 130122 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 153082 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 143130 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 3 | 54084 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 161915 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 153082 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 143130 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 103264 |
| IRS990/OtherRevenueMiscGrp/BusinessCd | 0 | 531120 |
| IRS990/OtherRevenueMiscGrp/BusinessCd | 1 | 900099 |
| IRS990/OtherRevenueMiscGrp/Desc | 0 | RENTAL REVENUE |
| IRS990/OtherRevenueMiscGrp/Desc | 1 | OTHER INCOME |
| IRS990/OtherRevenueMiscGrp/ExclusionAmt | 0 | 273325 |
| IRS990/OtherRevenueMiscGrp/ExclusionAmt | 1 | 10755 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 0 | 273325 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 1 | 10755 |
| IRS990/OtherRevenueTotalAmt | 0 | 284080 |
| IRS990/OtherSalariesAndWagesGrp/FundraisingAmt | 0 | 89424 |
| IRS990/OtherSalariesAndWagesGrp/ManagementAndGeneralAmt | 0 | 202894 |
| IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt | 0 | 1198786 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 1491104 |
| IRS990/PartialLiquidationInd | 0 | 0 |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | 0 |
| IRS990/PayrollTaxesGrp/FundraisingAmt | 0 | 6508 |
| IRS990/PayrollTaxesGrp/ManagementAndGeneralAmt | 0 | 16630 |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 94702 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 117840 |
| IRS990/PermanentlyRstrNetAssetsGrp/BOYAmt | 0 | 145594 |
| IRS990/PermanentlyRstrNetAssetsGrp/EOYAmt | 0 | 145594 |
| IRS990/PledgesAndGrantsReceivableGrp/BOYAmt | 0 | 872669 |
| IRS990/PledgesAndGrantsReceivableGrp/EOYAmt | 0 | 392943 |
| IRS990/PoliticalCampaignActyInd | 0 | 0 |
| IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt | 0 | 6153 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 18514 |
| IRS990/PrincipalOfficerNm | 0 | VICKI FISHMAN |
| IRS990/ProfessionalFundraisingInd | 0 | 0 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 0 | 541900 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 1 | 541900 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 2 | 541900 |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | TUITION |
| IRS990/ProgramServiceRevenueGrp/Desc | 1 | CAPITAL ASSESSMENTS |
| IRS990/ProgramServiceRevenueGrp/Desc | 2 | TRANSPORTATION |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 2471970 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 1 | 69300 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 2 | 62960 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 2471970 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 1 | 69300 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 2 | 62960 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | 0 |
| IRS990/PYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/PYContributionsGrantsAmt | 0 | 1504714 |
| IRS990/PYExcessBenefitTransInd | 0 | 0 |
| IRS990/PYGrantsAndSimilarPaidAmt | 0 | 1052587 |
| IRS990/PYInvestmentIncomeAmt | 0 | 5431 |
| IRS990/PYOtherExpensesAmt | 0 | 1729343 |
| IRS990/PYOtherRevenueAmt | 0 | 179390 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 3168039 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | 252374 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 1823270 |
| IRS990/PYTotalExpensesAmt | 0 | 4605200 |
| IRS990/PYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/PYTotalRevenueAmt | 0 | 4857574 |
| IRS990/QuidProQuoContributionsInd | 0 | 1 |
| IRS990/QuidProQuoContriDisclInd | 0 | 1 |
| IRS990/RcvFndsToPayPrsnlBnftCntrctInd | 0 | 0 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | -26322 |
| IRS990/RegularMonitoringEnfrcInd | 0 | 1 |
| IRS990/RelatedEntityInd | 0 | 0 |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | 0 |
| IRS990/ReportInvestmentsOtherSecInd | 0 | 0 |
| IRS990/ReportLandBuildingEquipmentInd | 0 | 1 |
| IRS990/ReportOtherAssetsInd | 0 | 0 |
| IRS990/ReportOtherLiabilitiesInd | 0 | 0 |
| IRS990/ReportProgramRelatedInvstInd | 0 | 0 |
| IRS990/RevenueAmt | 0 | 2604230 |
| IRS990ScheduleA/SchoolInd | 0 | X |
| IRS990/ScheduleBRequiredInd | 0 | 1 |
| IRS990ScheduleD/BuildingsGrp/BookValueAmt | 0 | 8173834 |
| IRS990ScheduleD/BuildingsGrp/DepreciationAmt | 0 | 3101835 |