| IRS990/AccountantCompileOrReviewInd | 0 | 0 |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 93179 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 187292 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | THE MISSION OF GWHV IS TO RESTORE THE ENVIRONMENTAL CONDITIONS OF ECONOMICALLY DISADVANTAGED COMMUNITIES IN THE HUDSON VALLEY TO MAKE THEM MORE EQUITABLE, SUSTAINABLE, HEALTHY, BEAUTIFUL, AND ECONOMICALLY VIABLE. |
| IRS990/AdvertisingGrp/ProgramServicesAmt | 0 | 3500 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 3500 |
| IRS990/AllOtherContributionsAmt | 0 | 789633 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | 1 |
| IRS990/AuditCommitteeInd | 0 | 1 |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | BARBARA BRILL |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 9143752151 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 22 MAIN STREET |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | YONKERS |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | NY |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 10701 |
| IRS990/BusinessRlnWithFamMemInd | 0 | 0 |
| IRS990/BusinessRlnWithOfficerEntInd | 0 | 0 |
| IRS990/BusinessRlnWithOrgMemInd | 0 | 0 |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 26014 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 75091 |
| IRS990/ChangeToOrgDocumentsInd | 0 | 0 |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/CollectionsOfArtInd | 0 | 0 |
| IRS990/CompCurrentOfcrDirectorsGrp/FundraisingAmt | 0 | 10538 |
| IRS990/CompCurrentOfcrDirectorsGrp/ManagementAndGeneralAmt | 0 | 24247 |
| IRS990/CompCurrentOfcrDirectorsGrp/ProgramServicesAmt | 0 | 60751 |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 95536 |
| IRS990/CompensationFromOtherSrcsInd | 0 | 0 |
| IRS990/CompensationProcessCEOInd | 0 | 1 |
| IRS990/CompensationProcessOtherInd | 0 | 0 |
| IRS990/ConferencesMeetingsGrp/ManagementAndGeneralAmt | 0 | 154 |
| IRS990/ConferencesMeetingsGrp/ProgramServicesAmt | 0 | 4829 |
| IRS990/ConferencesMeetingsGrp/TotalAmt | 0 | 4983 |
| IRS990/ConflictOfInterestPolicyInd | 0 | 1 |
| IRS990/ConservationEasementsInd | 0 | 0 |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | 0 |
| IRS990/ContriRptFundraisingEventAmt | 0 | 187407 |
| IRS990/CreditCounselingInd | 0 | 0 |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 1625979 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/CYInvestmentIncomeAmt | 0 | 1573 |
| IRS990/CYOtherExpensesAmt | 0 | 567722 |
| IRS990/CYOtherRevenueAmt | 0 | 74010 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 130147 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 250058 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 1013929 |
| IRS990/CYTotalExpensesAmt | 0 | 1581651 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 121295 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 1831709 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | 0 |
| IRS990/DeductibleArtContributionInd | 0 | 0 |
| IRS990/DeductibleNonCashContriInd | 0 | 1 |
| IRS990/DeferredRevenueGrp/BOYAmt | 0 | 22154 |
| IRS990/DeferredRevenueGrp/EOYAmt | 0 | 20020 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 0 |
| IRS990/DepreciationDepletionGrp/ManagementAndGeneralAmt | 0 | 20 |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 20570 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 20590 |
| IRS990/Desc | 0 | SCIENCE EDUCATION: GWHV IS A REGIONAL LEADER IN STEM EDUCATION FOR LOW-INCOME MINORITY STUDENTS IN YONKERS AND THE NEW YORK CITY METRO AREA. THE SCIENCE BARGE IS A FLOATING FARM POWERED BY SOLAR, WIND, AND BIODIESEL, VISITED BY MORE THAN 10,000 INDIVIDUALS IN 2016. OUR SCIENCE BARGE ALSO SERVES MORE THAN 5,000 STUDENTS EACH YEAR. IT WON BEST SCIENCE EDUCATION FIELD TRIP IN THE NEW YORK AREA ON MULTIPLE OCCASIONS, AND A FEDERALLY FUNDED EVALUATION SHOWED AN INCREASE OF MORE THAN 50% IN STEM RETENTION AMONG LOW-INCOME STUDENTS. THIS YEAR WE ADDED THE ECOHOUSE TO THIS INNOVATIVE TEACHING PLATFORM AND HAVE IMPLEMENTED A FEDERAL GRANT (ONE OF SIX IN THE COUNTRY) FROM THE NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION (NOAA) TO EXPAND OUR SERVICES TO TEACH GLOBAL CLIMATE ISSUES AND RESILIENCY. GWHV'S EDUCATORS ARE HIGHLY ACCOMPLISHED AND PROVIDE IN-CLASS STEM SERVICES AT TWO PUBLIC HIGH SCHOOLS AND FOUR ELEMENTARY SCHOOLS THROUGH A PARTNERSHIP WITH YONKERS PUBLIC SCHOOLS. |
| IRS990/DescribedInSection501c3Ind | 0 | 1 |
| IRS990/DisregardedEntityInd | 0 | 0 |
| IRS990/DocumentRetentionPolicyInd | 0 | 1 |
| IRS990/DoingBusinessAsName/BusinessNameLine1Txt | 0 | SEE SCHEDULE O |
| IRS990/DonatedServicesAndUseFcltsAmt | 0 | 52836 |
| IRS990/DonorAdvisedFundInd | 0 | 0 |
| IRS990/ElectionOfBoardMembersInd | 0 | 0 |
| IRS990/EmployeeCnt | 0 | 77 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | 1 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | 0 |
| IRS990/ExpenseAmt | 0 | 427228 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 0 |
| IRS990/FederalGrantAuditRequiredInd | 0 | 0 |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 13000 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 13000 |
| IRS990/FeesForServicesOtherGrp/FundraisingAmt | 0 | 216 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 11868 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 150212 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 162296 |
| IRS990/ForeignActivitiesInd | 0 | 0 |
| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 10.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 11 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 12 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 13 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 14 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 15 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 16 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 17 | 45.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 18 | 20.00 |
| 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/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/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 | 14925 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 18 | 0 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | ROBERT BARON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | WENDY ZIMMERMAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | SHANNON DAUGHERTY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | BRIAN CARROLL |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | PAM MICHELS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | CAROLE CHAIMOWITZ |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | ELIAS DAGHER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | DONNA DAVIS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | PAT TRUSCELLI ELLIS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | ANTHONY SIMARI |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | KAMILI BELL HILL |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | JOAN DINOWITZ |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | JEFFREY MYERS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 13 | STEVE PUCILLO |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 14 | JACOB ANBINDER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 15 | JUDITH COHN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 16 | ERICA SEVILLE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 17 | RICK MAGDER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 18 | ANN MARIE MITROFF |
| 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 | 76224 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 18 | 4387 |
| 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/TitleTxt | 0 | PRESIDENT/CHAIR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | VICE-CHAIR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | SECRETARY |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 13 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 14 | BOARD MEMBER THRU 8/22/16 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 15 | BOARD MEMBER THRU 1/1/16 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 16 | BOARD MEMBER THRU 11/1/16 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 17 | EXECUTIVE DIRECTOR THRU 8/31/16 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 18 | INTERIM EXECUTIVE DIRECTOR |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | 1 |
| IRS990/FormationYr | 0 | 2000 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 0 |
| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | 1 |
| IRS990/FundraisingActivitiesInd | 0 | 1 |
| IRS990/FundraisingAmt | 0 | 187407 |
| IRS990/FundraisingDirectExpensesAmt | 0 | 39519 |
| IRS990/FundraisingGrossIncomeAmt | 0 | 33992 |
| IRS990/GainOrLossGrp/SecuritiesAmt | 0 | 1539 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 14 |
| IRS990/GovernmentGrantsAmt | 0 | 648939 |
| IRS990/GrantsToIndividualsInd | 0 | 0 |
| IRS990/GrantsToOrganizationsInd | 0 | 0 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
| IRS990/GrossAmountSalesAssetsGrp/SecuritiesAmt | 0 | 230035 |
| IRS990/GrossReceiptsAmt | 0 | 2099724 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 1 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 1 |
| IRS990/IndependentVotingMemberCnt | 0 | 14 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartIIIInd | 0 | X |
| IRS990/InfoInScheduleOPartIXInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InfoInScheduleOPartXIIInd | 0 | X |
| IRS990/InformationTechnologyGrp/FundraisingAmt | 0 | 658 |
| IRS990/InformationTechnologyGrp/ManagementAndGeneralAmt | 0 | 1315 |
| IRS990/InformationTechnologyGrp/ProgramServicesAmt | 0 | 11684 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 13657 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 6937 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 23896 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 30833 |
| IRS990/InterestGrp/ProgramServicesAmt | 0 | 1776 |
| IRS990/InterestGrp/TotalAmt | 0 | 1776 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 34 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 34 |
| IRS990/InvestmentInJointVentureInd | 0 | 0 |
| IRS990/IRPDocumentCnt | 0 | 12 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 258131 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 130577 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 406246 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 664377 |
| IRS990/LegalDomicileStateCd | 0 | NY |
| IRS990/LessCostOthBasisSalesExpnssGrp/SecuritiesAmt | 0 | 228496 |
| 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 | THE MISSION OF GWHV IS TO RESTORE THE ENVIRONMENTAL CONDITIONS OF ECONOMICALLY DISADVANTAGED COMMUNITIES IN THE HUDSON VALLEY TO MAKE THEM MORE EQUITABLE, SUSTAINABLE, HEALTHY, BEAUTIFUL, AND ECONOMICALLY VIABLE. WE ARE DEDICATED TO EMPOWERING LOCAL RESIDENTS AND BRINGING TOGETHER BUSINESS, GOVERNMENT, AND COMMUNITY GROUPS TO ACHIEVE SUSTAINABLE CHANGE. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | 0 |
| IRS990/MoreThan5000KToOrgInd | 0 | 0 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 145131 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 448025 |
| IRS990/NetGainOrLossInvestmentsGrp/ExclusionAmt | 0 | 1539 |
| IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt | 0 | 1539 |
| IRS990/NetIncmFromFundraisingEvtGrp/ExclusionAmt | 0 | -5527 |
| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | -5527 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NoncashContributionsAmt | 0 | 228496 |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OccupancyGrp/FundraisingAmt | 0 | 5919 |
| IRS990/OccupancyGrp/ManagementAndGeneralAmt | 0 | 11838 |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 39850 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 57607 |
| IRS990/OfficeExpensesGrp/FundraisingAmt | 0 | 1867 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 3733 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 109186 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 114786 |
| IRS990/OfficerMailingAddressInd | 0 | 0 |
| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsSFAS117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 3985 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 4450 |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 0 |
| IRS990/OtherEmployeeBenefitsGrp/FundraisingAmt | 0 | 8031 |
| IRS990/OtherEmployeeBenefitsGrp/ManagementAndGeneralAmt | 0 | 16062 |
| IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt | 0 | 44572 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 68665 |
| IRS990/OtherExpensesGrp/Desc | 0 | PROGRAM MATERIALS & SUP |
| IRS990/OtherExpensesGrp/Desc | 1 | RECRUITMENT AND HIRING |
| IRS990/OtherExpensesGrp/Desc | 2 | MISCELLANEOUS |
| IRS990/OtherExpensesGrp/Desc | 3 | REPAIRS AND MAINTENANCE |
| IRS990/OtherExpensesGrp/FundraisingAmt | 0 | 609 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 29755 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 1 | 8946 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 81574 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 802 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 2844 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 81574 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 29755 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 10357 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 2844 |
| IRS990/OtherLiabilitiesGrp/BOYAmt | 0 | 1317 |
| IRS990/OtherLiabilitiesGrp/EOYAmt | 0 | 0 |
| IRS990/OtherRevenueMiscGrp/BusinessCd | 0 | 900099 |
| IRS990/OtherRevenueMiscGrp/Desc | 0 | REIMBURSEMENTS |
| IRS990/OtherRevenueMiscGrp/ExclusionAmt | 0 | 79537 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 0 | 79537 |
| IRS990/OtherRevenueTotalAmt | 0 | 79537 |
| IRS990/OtherSalariesAndWagesGrp/FundraisingAmt | 0 | 82018 |
| IRS990/OtherSalariesAndWagesGrp/ManagementAndGeneralAmt | 0 | 193597 |
| IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt | 0 | 476306 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 751921 |
| IRS990/OtherWebsiteInd | 0 | X |
| IRS990/PartialLiquidationInd | 0 | 0 |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | 0 |
| IRS990/PayrollTaxesGrp/FundraisingAmt | 0 | 10084 |
| IRS990/PayrollTaxesGrp/ManagementAndGeneralAmt | 0 | 20168 |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 55966 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 86218 |
| IRS990/PensionPlanContributionsGrp/FundraisingAmt | 0 | 1355 |
| IRS990/PensionPlanContributionsGrp/ManagementAndGeneralAmt | 0 | 2711 |
| IRS990/PensionPlanContributionsGrp/ProgramServicesAmt | 0 | 7523 |
| IRS990/PensionPlanContributionsGrp/TotalAmt | 0 | 11589 |
| IRS990/PledgesAndGrantsReceivableGrp/BOYAmt | 0 | 90544 |
| IRS990/PledgesAndGrantsReceivableGrp/EOYAmt | 0 | 199780 |
| IRS990/PoliticalCampaignActyInd | 0 | 0 |
| IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt | 0 | 10293 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 9088 |
| IRS990/PrincipalOfficerNm | 0 | BRIAN CARROLL |
| IRS990/ProfessionalFundraisingInd | 0 | 0 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 0 | 900099 |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | PROGRAM REVENUE |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 130147 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 130147 |
| IRS990/ProgSrvcAccomActy2Grp/Desc | 0 | IMPROVING PARKS, GREENWAYS, & PUBLIC SPACE: UNDER THIS CORE PROGRAM, GWHV RESTORES THE PHYSICAL AND ENVIRONMENTAL CONDITIONS OF NEIGHBORHOODS IN SOUTHWEST YONKERS, ALONG THE SAW MILL RIVER CORRIDOR, AND IN NEWBURGH, NY. ACTIVITIES INCLUDE VACANT PROPERTY CLEANUP AND RENEWAL, THE DEVELOPMENT OF NEW GREENWAYS AND TRANSIT CORRIDORS, THE RESTORATION OF EXISTING PARKS AND TRAILS, PLAYGROUND RENOVATION, TREE PLANTING, AND PUBLIC ART, INCLUDING MURALS, MOSAICS AND OUTDOOR SCULPTURE. IN ADDITION, GWHV WORKS TO ENSURE THAT THESE IMPROVEMENTS REMAIN VIBRANT, ACTIVE, AND SUCCESSFUL THROUGH STEWARDSHIP AND PUBLIC PROGRAMS. |
| IRS990/ProgSrvcAccomActy2Grp/ExpenseAmt | 0 | 278547 |
| IRS990/ProgSrvcAccomActy2Grp/RevenueAmt | 0 | 42467 |
| IRS990/ProgSrvcAccomActy3Grp/Desc | 0 | YOUTH LEADERSHIP: GWHV'S YOUTH INITIATIVES ARE HIGHLY REGARDED AND DESIGNED TO CREATE THE URBAN CONSERVATION LEADERS OF TOMORROW. ACTIVITIES FOR HIGH SCHOOL STUDENTS INCLUDE THE AWARD WINNING SUMMER YOUTH EMPLOYMENT PROGRAMS, CALLED THE GREEN TEAM, AND THE SCHOOL-YEAR URBAN CONSERVATION CORPS. STUDENTS ARE EDUCATED, MENTORED, TRAINED AND PAID AS EMPLOYEES OVER MULTIPLE YEARS TO DEVELOP THEIR UNDERSTANDING AND THEIR SKILLS IN URBAN CONSERVATION. SERVICE PARTNERSHIPS HAVE BEEN ESTABLISHED WITH YELLOWSTONE NATIONAL PARK, THE APPALACHIAN TRAIL, WALLKILL NATIONAL WILDLIFE REFUGE, AND THE NY HARBOR PARKS. |
| IRS990/ProgSrvcAccomActy3Grp/ExpenseAmt | 0 | 264817 |
| IRS990/ProgSrvcAccomActy3Grp/RevenueAmt | 0 | 10153 |
| IRS990/ProgSrvcAccomActyOtherGrp/Desc | 0 | BUILDING HEALTHY COMMUNITIES: UNDER THE NAME "GET FRESH YONKERS AND "GET FRESH NEWBURGH", GWHV ADDRESSES FOOD SECURITY ISSUES AND COMMUNITY HEALTH CONCERNS THROUGH A HOLISTIC, CITIZEN-BASED APPROACH. IN THE FOOD ARENA, ACTIVITIES INCLUDE A NETWORK OF CITIZEN FARMS, A FARMER'S MARKET THAT IS MANAGED BY LOCAL RESIDENTS, A HYDROPONIC FARM ON THE SCIENCE BARGE, A COMMUNITY SUPPORTED (CSA) PROGRAM, AND IN-SCHOOL URBAN AGRICULTURE EDUCATION AND TRAINING IN LOCAL HIGH SCHOOLS. |
| IRS990/ProgSrvcAccomActyOtherGrp/ExpenseAmt | 0 | 145413 |
| IRS990/ProgSrvcAccomActyOtherGrp/RevenueAmt | 0 | 36160 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | 0 |
| IRS990/PYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/PYContributionsGrantsAmt | 0 | 1182068 |
| IRS990/PYExcessBenefitTransInd | 0 | 0 |
| IRS990/PYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/PYInvestmentIncomeAmt | 0 | 21 |
| IRS990/PYOtherExpensesAmt | 0 | 502835 |
| IRS990/PYOtherRevenueAmt | 0 | 4760 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 221528 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | -61476 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 967018 |
| IRS990/PYTotalExpensesAmt | 0 | 1469853 |
| IRS990/PYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/PYTotalRevenueAmt | 0 | 1408377 |
| IRS990/QuidProQuoContributionsInd | 0 | 1 |
| IRS990/QuidProQuoContriDisclInd | 0 | 1 |
| IRS990/RcvFndsToPayPrsnlBnftCntrctInd | 0 | 0 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | 250058 |
| 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 | 41367 |
| IRS990/SavingsAndTempCashInvstGrp/BOYAmt | 0 | 368 |
| IRS990/SavingsAndTempCashInvstGrp/EOYAmt | 0 | 682 |
| IRS990ScheduleA/Form990ScheduleAPartVIGrp/ExplanationTxt | 0 | OTHER INCOME - 2015 AMOUNT: $ 4,760. REIMBURSEMENT - 2016 AMOUNT: $ 79,237. |
| IRS990ScheduleA/Form990ScheduleAPartVIGrp/FormAndLineReferenceDesc | 0 | SCHEDULE A, PART II, LINE 10, EXPLANATION OF OTHER INCOME: |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearAmt | 0 | 1625979 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus1YearAmt | 0 | 1182068 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 1192448 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 807157 |