| IRS990/AccountantCompileOrReviewInd | 0 | 0 |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 380575 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 346449 |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 1048544 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 581688 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | TO PRESERVE LAND AND NATURAL RESOURCES THROUGHOUT NEW JERSEY FOR THE BENEFIT OF ALL. |
| IRS990/AllOtherContributionsAmt | 0 | 4932593 |
| IRS990/AllOtherExpensesGrp/FundraisingAmt | 0 | 114 |
| IRS990/AllOtherExpensesGrp/ManagementAndGeneralAmt | 0 | 4482 |
| IRS990/AllOtherExpensesGrp/ProgramServicesAmt | 0 | 5142 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 9738 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | 1 |
| IRS990/AuditCommitteeInd | 0 | 1 |
| IRS990/BackupWthldComplianceInd | 0 | 1 |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | KAREN RICHARDS |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 9082341225 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 170 LONGVIEW ROAD |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | FAR HILLS |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | NJ |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 07931 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | 0 |
| IRS990/BusinessRlnWithFamMemInd | 0 | 0 |
| IRS990/BusinessRlnWithOrgMemInd | 0 | 0 |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 30652 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 20423 |
| IRS990/ChangeToOrgDocumentsInd | 0 | 0 |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 1 |
| IRS990/CollectionsOfArtInd | 0 | 0 |
| IRS990/CompCurrentOfcrDirectorsGrp/FundraisingAmt | 0 | 81029 |
| IRS990/CompCurrentOfcrDirectorsGrp/ManagementAndGeneralAmt | 0 | 66729 |
| IRS990/CompCurrentOfcrDirectorsGrp/ProgramServicesAmt | 0 | 328885 |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 476643 |
| IRS990/CompensationFromOtherSrcsInd | 0 | 0 |
| IRS990/CompensationProcessCEOInd | 0 | 1 |
| IRS990/CompensationProcessOtherInd | 0 | 1 |
| IRS990/ConferencesMeetingsGrp/FundraisingAmt | 0 | 2956 |
| IRS990/ConferencesMeetingsGrp/ManagementAndGeneralAmt | 0 | 2266 |
| IRS990/ConferencesMeetingsGrp/ProgramServicesAmt | 0 | 12752 |
| IRS990/ConferencesMeetingsGrp/TotalAmt | 0 | 17974 |
| IRS990/ConflictOfInterestPolicyInd | 0 | 1 |
| IRS990/ConservationEasementsInd | 0 | 1 |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | 1 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 0 | 121338 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 0 | 239 RIDGEVIEW RD |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 0 | PRINCETON |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 0 | NJ |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 0 | 08540 |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 0 | BLUMENTHAL CONSULTING LLC |
| IRS990/ContractorCompensationGrp/ServicesDesc | 0 | RESEARCH CONSULTANTS |
| IRS990/ContriRptFundraisingEventAmt | 0 | 305163 |
| IRS990/CreditCounselingInd | 0 | 0 |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 6837742 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 994444 |
| IRS990/CYInvestmentIncomeAmt | 0 | -885722 |
| IRS990/CYOtherExpensesAmt | 0 | 1444768 |
| IRS990/CYOtherRevenueAmt | 0 | 140225 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 0 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 557201 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 3095832 |
| IRS990/CYTotalExpensesAmt | 0 | 5535044 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 820623 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 6092245 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | 0 |
| IRS990/DeductibleArtContributionInd | 0 | 1 |
| IRS990/DeductibleNonCashContriInd | 0 | 1 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 0 |
| IRS990/DepreciationDepletionGrp/FundraisingAmt | 0 | 3714 |
| IRS990/DepreciationDepletionGrp/ManagementAndGeneralAmt | 0 | 3058 |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 15074 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 21846 |
| IRS990/Desc | 0 | 2023 ACCOMPLISHMENTS SEE SCHEDULE O: |
| IRS990/DescribedInSection501c3Ind | 0 | 1 |
| IRS990/DisregardedEntityInd | 0 | 1 |
| IRS990/DocumentRetentionPolicyInd | 0 | 1 |
| IRS990/DonorAdvisedFundInd | 0 | 0 |
| IRS990/DonorRestrictionNetAssetsGrp/BOYAmt | 0 | 9607340 |
| IRS990/DonorRestrictionNetAssetsGrp/EOYAmt | 0 | 9488386 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | 1 |
| IRS990/ElectionOfBoardMembersInd | 0 | 0 |
| IRS990/EmployeeCnt | 0 | 37 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | 1 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | 0 |
| IRS990/ExpenseAmt | 0 | 4164571 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 0 |
| IRS990/FederalGrantAuditPerformedInd | 0 | 1 |
| IRS990/FederalGrantAuditRequiredInd | 0 | 1 |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 45500 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 45500 |
| IRS990/FeesForServicesLegalGrp/ManagementAndGeneralAmt | 0 | 815 |
| IRS990/FeesForServicesLegalGrp/ProgramServicesAmt | 0 | 34625 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 35440 |
| IRS990/FeesForServicesLobbyingGrp/ProgramServicesAmt | 0 | 9000 |
| IRS990/FeesForServicesLobbyingGrp/TotalAmt | 0 | 9000 |
| IRS990/FeesForServicesOtherGrp/FundraisingAmt | 0 | 163571 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 4938 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 501281 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 669790 |
| IRS990/ForeignActivitiesInd | 0 | 0 |
| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 10.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 10.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 11 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 12 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 13 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 14 | 10.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 15 | 10.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 16 | 10.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 17 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 18 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 19 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 20 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 21 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 22 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 23 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 24 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 25 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 26 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 1 | X |
| 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/IndividualTrusteeOrDirectorInd | 21 | 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/OfficerInd | 7 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 8 | 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 | 21059 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 23 | 28074 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 24 | 9137 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 25 | 19095 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 26 | 13292 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | GEORGE ALLPORT |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | LIPING AN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | KATHLEEN BOURKE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | JENNIFER BRYSON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | FINN CASPERSEN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | JIM LYONS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | JACK CIMPRICH |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | DAVID CRONHEIM |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | JENNIFER WILLIAMS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | JANE HIGGINS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | JAMES HUGHES |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | KENNETH H KLIPSTEIN II |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | WILLIAM T KNOX CFA |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 13 | ANDREW KRICUN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 14 | LOUISE CURREY WILSON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 15 | JOSEPH LEMOND |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 16 | WENDY MAGER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 17 | MEREDITH MOORE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 18 | STEPHEN PARKER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 19 | MEREDITH TAYLOR |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 20 | KEVIN KUCHINSKI |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 21 | TED CHASE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 22 | ALISON MITCHELL |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 23 | THOMAS GILBERT |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 24 | JOHN S WATSON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 25 | KAREN RICHARDS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 26 | TIM MORRIS |
| 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 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 18 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 19 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 20 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 21 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 22 | 137886 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 23 | 135488 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 24 | 145000 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 25 | 108703 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 26 | 111245 |
| 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/TitleTxt | 0 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | SECRETARY |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 13 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 14 | PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 15 | 2ND VICE PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 16 | 1ST VICE PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 17 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 18 | ASSISTANT SECRETARY |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 19 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 20 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 21 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 22 | CO-EXECUTIVE DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 23 | CO-EXECUTIVE DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 24 | CO-EXECUTIVE DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 25 | DIRECTOR OF FIN & ADM |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 26 | DIR. OF STEWARDSHIP |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | 1 |
| IRS990/FormationYr | 0 | 1960 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 0 |
| IRS990/FSAuditedBasisGrp/ConsolidatedBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | 1 |
| IRS990/FundraisingActivitiesInd | 0 | 1 |
| IRS990/FundraisingAmt | 0 | 305163 |
| IRS990/FundraisingDirectExpensesAmt | 0 | 129979 |
| IRS990/FundraisingGrossIncomeAmt | 0 | 75547 |
| IRS990/GainOrLossGrp/OtherAmt | 0 | -1166127 |
| IRS990/GainOrLossGrp/SecuritiesAmt | 0 | -114014 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 22 |
| IRS990/GovernmentGrantsAmt | 0 | 1599986 |
| IRS990/GrantAmt | 0 | 994444 |
| IRS990/GrantsToDomesticOrgsGrp/ProgramServicesAmt | 0 | 994444 |
| IRS990/GrantsToDomesticOrgsGrp/TotalAmt | 0 | 994444 |
| IRS990/GrantsToIndividualsInd | 0 | 0 |
| IRS990/GrantsToOrganizationsInd | 0 | 1 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
| IRS990/GrossAmountSalesAssetsGrp/SecuritiesAmt | 0 | 6924488 |
| IRS990/GrossReceiptsAmt | 0 | 14426853 |
| IRS990/GrossRentsGrp/RealAmt | 0 | 57828 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 1 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 0 |
| IRS990/IndependentVotingMemberCnt | 0 | 22 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 5 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartIIIInd | 0 | X |
| IRS990/InfoInScheduleOPartIXInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InfoInScheduleOPartXIIInd | 0 | X |
| IRS990/InfoInScheduleOPartXIInd | 0 | X |
| IRS990/InformationTechnologyGrp/FundraisingAmt | 0 | 8887 |
| IRS990/InformationTechnologyGrp/ManagementAndGeneralAmt | 0 | 7160 |
| IRS990/InformationTechnologyGrp/ProgramServicesAmt | 0 | 43646 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 59693 |
| IRS990/InsuranceGrp/FundraisingAmt | 0 | 16270 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 13399 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 73189 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 102858 |
| IRS990/InterestGrp/ManagementAndGeneralAmt | 0 | 474 |
| IRS990/InterestGrp/TotalAmt | 0 | 474 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 394419 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 394419 |
| IRS990/InvestmentInJointVentureInd | 0 | 0 |
| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 15210938 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 17907566 |
| IRS990/IRPDocumentCnt | 0 | 35 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 209654 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 41219311 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 42309157 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 42518811 |
| IRS990/LegalDomicileStateCd | 0 | NJ |
| IRS990/LessCostOthBasisSalesExpnssGrp/OtherAmt | 0 | 1166127 |
| IRS990/LessCostOthBasisSalesExpnssGrp/SecuritiesAmt | 0 | 7038502 |
| IRS990/LessRentalExpensesGrp/RealAmt | 0 | 0 |
| IRS990/LoanOutstandingInd | 0 | 0 |
| IRS990/LobbyingActivitiesInd | 0 | 1 |
| 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 | RECOGNIZING THAT A HEALTHY ENVIRONMENT IS CRITICAL TO THE WELL-BEING AND SURVIVAL OF ALL LIVING THINGS, NEW JERSEY CONSERVATION FOUNDATION IS DEVOTED TO PRESERVING LAND AND PROTECTING NATURAL RESOURCES THROUGHOUT NEW JERSEY'S (CONTINUED ON SCHEDULE O)RURAL, SUBURBAN, AND URBAN LANDSCAPES. SINCE 1960, THE NONPROFIT, NONPARTISAN, STATEWIDE ORGANIZATION HAS PRESERVED MORE THAN 140,000 ACRES OF OPEN SPACE, FARMLAND, AND PARKS. THE ORGANIZATION MANAGES MORE THAN A DOZEN NATURE PRESERVES, CONDUCTS PUBLIC OUTREACH AND EDUCATION PROGRAMS, AND ADVOCATES FOR SENSIBLE LAND USE AND CLIMATE POLICIES THAT WILL PROTECT THE HEALTH OF NEW JERSEY'S PLANTS, WILDLIFE, AND PEOPLE FOR GENERATIONS TO COME. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | 0 |
| IRS990/MoreThan5000KToOrgInd | 0 | 0 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 62467745 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 65031874 |
| IRS990/NetGainOrLossInvestmentsGrp/ExclusionAmt | 0 | -1280141 |
| IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt | 0 | -1280141 |
| IRS990/NetIncmFromFundraisingEvtGrp/ExclusionAmt | 0 | -54432 |
| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | -54432 |
| IRS990/NetRentalIncomeOrLossGrp/ExclusionAmt | 0 | 57828 |
| IRS990/NetRentalIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | 57828 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | 2164595 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 52860405 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 55543488 |
| IRS990/NoncashContributionsAmt | 0 | 884745 |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OccupancyGrp/FundraisingAmt | 0 | 9040 |
| IRS990/OccupancyGrp/ManagementAndGeneralAmt | 0 | 7444 |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 54611 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 71095 |
| IRS990/OfficeExpensesGrp/FundraisingAmt | 0 | 65190 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 5258 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 57800 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 128248 |
| IRS990/OfficerMailingAddressInd | 0 | 0 |
| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 359124 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 285372 |
| IRS990/OtherChangesInNetAssetsAmt | 0 | -157667 |
| IRS990/OtherEmployeeBenefitsGrp/FundraisingAmt | 0 | 40646 |
| IRS990/OtherEmployeeBenefitsGrp/ManagementAndGeneralAmt | 0 | 33474 |