| IRS990/AccountantCompileOrReviewInd | 0 | false |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 261934 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 267977 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | false |
| IRS990/ActivityOrMissionDesc | 0 | TO NURTURE A VIBRANT LOWER CAPE REGION BY PROMOTING ENVIRONMENTAL AND ECONOMIC SUSTAINABILITY, EXPANDING OPPORTUNITIES FOR LOW-AND MODERATE- INCOME RESIDENTS, AND PRESERVING OUR UNIQUE CULTURAL AND HISTORIC CHARACTER. |
| IRS990/AdvertisingGrp/FundraisingAmt | 0 | 7717 |
| IRS990/AdvertisingGrp/ManagementAndGeneralAmt | 0 | 3389 |
| IRS990/AdvertisingGrp/ProgramServicesAmt | 0 | 15012 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 26118 |
| IRS990/AllOtherContributionsAmt | 0 | 946323 |
| IRS990/AllOtherExpensesGrp/ManagementAndGeneralAmt | 0 | 6604 |
| IRS990/AllOtherExpensesGrp/ProgramServicesAmt | 0 | 4296 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 10900 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | true |
| IRS990/AuditCommitteeInd | 0 | true |
| IRS990/BooksInCareOfDetail/PersonNm | 0 | KATHLEEN BOYCE |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 5082900111 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | PO BOX 2786 |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | ORLEANS |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | MA |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 02653 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | false |
| IRS990/BusinessRlnWithFamMemInd | 0 | false |
| IRS990/BusinessRlnWithOrgMemInd | 0 | false |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 3805232 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 2820521 |
| IRS990/ChangeToOrgDocumentsInd | 0 | false |
| IRS990/CollectionsOfArtInd | 0 | false |
| IRS990/CompensationFromOtherSrcsInd | 0 | false |
| IRS990/CompensationProcessCEOInd | 0 | false |
| IRS990/CompensationProcessOtherInd | 0 | true |
| IRS990/ConflictOfInterestPolicyInd | 0 | true |
| IRS990/ConservationEasementsInd | 0 | false |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | true |
| IRS990/CreditCounselingInd | 0 | false |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 1745037 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/CYInvestmentIncomeAmt | 0 | 435 |
| IRS990/CYOtherExpensesAmt | 0 | 1478667 |
| IRS990/CYOtherRevenueAmt | 0 | 11213 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 1564249 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | -276352 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 2118619 |
| IRS990/CYTotalExpensesAmt | 0 | 3597286 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 306514 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 3320934 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | false |
| IRS990/DeductibleArtContributionInd | 0 | false |
| IRS990/DeductibleNonCashContriInd | 0 | false |
| IRS990/DeferredRevenueGrp/BOYAmt | 0 | 78977 |
| IRS990/DeferredRevenueGrp/EOYAmt | 0 | 87314 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | false |
| IRS990/DepreciationDepletionGrp/ManagementAndGeneralAmt | 0 | 19769 |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 348821 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 368590 |
| IRS990/Desc | 0 | HOUSING ADVOCACY PROGRAM TO WORK WITH TOWNS ON THE LOWER CAPE TO CREATE MORE OPPORTUNITIES FOR AFFORDABLE HOUSING FOR YEAR ROUND RESIDENTS AND A FIRST TIME HOMEBUYERS PROGRAM TO PROVIDE EDUCATION TO YEAR ROUND RESIDENTS AT OR BELOW 80% OF MEDIUM INCOME. |
| IRS990/DescribedInSection501c3Ind | 0 | true |
| IRS990/DisregardedEntityInd | 0 | true |
| IRS990/DocumentRetentionPolicyInd | 0 | true |
| IRS990/DoingBusinessAsName/BusinessNameLine1Txt | 0 | COMMUNITY DEVELOPMENT PARTNERSHIP |
| IRS990/DonorAdvisedFundInd | 0 | false |
| IRS990/DonorRestrictionNetAssetsGrp/BOYAmt | 0 | 812258 |
| IRS990/DonorRestrictionNetAssetsGrp/EOYAmt | 0 | 629582 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | false |
| IRS990/ElectionOfBoardMembersInd | 0 | true |
| IRS990/EmployeeCnt | 0 | 25 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | true |
| IRS990/EngagedInExcessBenefitTransInd | 0 | false |
| IRS990/ExpenseAmt | 0 | 2740515 |
| IRS990/FamilyOrBusinessRlnInd | 0 | false |
| IRS990/FederalGrantAuditPerformedInd | 0 | true |
| IRS990/FederalGrantAuditRequiredInd | 0 | true |
| IRS990/FeesForServicesAccountingGrp/FundraisingAmt | 0 | 1274 |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 25882 |
| IRS990/FeesForServicesAccountingGrp/ProgramServicesAmt | 0 | 20023 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 47179 |
| IRS990/FeesForServicesLegalGrp/FundraisingAmt | 0 | 738 |
| IRS990/FeesForServicesLegalGrp/ManagementAndGeneralAmt | 0 | 14989 |
| IRS990/FeesForServicesLegalGrp/ProgramServicesAmt | 0 | 11596 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 27323 |
| IRS990/FeesForServicesManagementGrp/FundraisingAmt | 0 | 1128 |
| IRS990/FeesForServicesManagementGrp/ManagementAndGeneralAmt | 0 | 22910 |
| IRS990/FeesForServicesManagementGrp/ProgramServicesAmt | 0 | 17722 |
| IRS990/FeesForServicesManagementGrp/TotalAmt | 0 | 41760 |
| IRS990/FeesForServicesOtherGrp/FundraisingAmt | 0 | 10152 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 48444 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 16272 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 74868 |
| IRS990/ForeignActivitiesInd | 0 | false |
| IRS990/ForeignFinancialAccountInd | 0 | false |
| IRS990/ForeignOfficeInd | 0 | false |
| IRS990/Form1098CFiledInd | 0 | false |
| IRS990/Form8282PropertyDisposedOfInd | 0 | false |
| IRS990/Form8899Filedind | 0 | false |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 37.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 37.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 4.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 4.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 4.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 4.00 |
| 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 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 0 | 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/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 15626 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 17490 |
| 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/PersonNm | 0 | KATHLEEN BOYCE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | JAY COBURN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | STEVE COLE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | CAROLE RIDLEY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | PAUL RUCHINSKAS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | JENNIFER CUSACK |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | POLLY BRYSON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | ANDREW FOSS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | DAVID KOVEN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | ROBERT MACCREADY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | MARIN REINHARDT |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | RAPHAEL RICHTER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | KRISTY SENATORI |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 13 | ANDREW STERN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 14 | AARON POLHEMOS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 15 | MARY KAY LEONARD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 16 | FRAN SCHOFIELD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 17 | ANNE SIGSBEE |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 141781 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 174100 |
| 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/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 | CFAO |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | CEO |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | BOARD CHAIR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | VICE CHAIR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | CLERK |
| 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/Form990ProvidedToGvrnBodyInd | 0 | false |
| IRS990/FormationYr | 0 | 1992 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | false |
| IRS990/FSAuditedBasisGrp/ConsolidatedBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | true |
| IRS990/FundraisingActivitiesInd | 0 | true |
| IRS990/FundraisingDirectExpensesAmt | 0 | 13980 |
| IRS990/FundraisingGrossIncomeAmt | 0 | 15475 |
| IRS990/GamingActivitiesInd | 0 | false |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 16 |
| IRS990/GovernmentGrantsAmt | 0 | 798714 |
| IRS990/GrantsToIndividualsInd | 0 | false |
| IRS990/GrantsToOrganizationsInd | 0 | false |
| IRS990/GrantToRelatedPersonInd | 0 | false |
| IRS990/GrossReceiptsAmt | 0 | 3334914 |
| IRS990/GroupReturnForAffiliatesInd | 0 | false |
| IRS990/IncludeFIN48FootnoteInd | 0 | false |
| IRS990/IndependentAuditFinclStmtInd | 0 | true |
| IRS990/IndependentVotingMemberCnt | 0 | 16 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 2 |
| IRS990/IndoorTanningServicesInd | 0 | false |
| IRS990/InfoInScheduleOPartIIIInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 20942 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 72681 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 93623 |
| IRS990/InterestGrp/ManagementAndGeneralAmt | 0 | 4427 |
| IRS990/InterestGrp/ProgramServicesAmt | 0 | 123091 |
| IRS990/InterestGrp/TotalAmt | 0 | 127518 |
| IRS990/InventoriesForSaleOrUseGrp/BOYAmt | 0 | 513946 |
| IRS990/InventoriesForSaleOrUseGrp/EOYAmt | 0 | 513946 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 435 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 435 |
| IRS990/InvestmentInJointVentureInd | 0 | false |
| IRS990/IRPDocumentCnt | 0 | 44 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 5718973 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 5815105 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 5509693 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 11228666 |
| IRS990/LegalDomicileStateCd | 0 | MA |
| IRS990/LoanOutstandingInd | 0 | false |
| IRS990/LobbyingActivitiesInd | 0 | false |
| IRS990/LocalChaptersInd | 0 | false |
| IRS990/MaterialDiversionOrMisuseInd | 0 | false |
| IRS990/MembersOrStockholdersInd | 0 | true |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | true |
| IRS990/MinutesOfGoverningBodyInd | 0 | true |
| IRS990/MissionDesc | 0 | TO NURTURE A VIBRANT LOWER CAPE REGION BY PROMOTING ENVIRONMENTAL AND ECONOMIC SUSTAINABILITY, EXPANDING OPPORTUNITIES FOR LOW-AND MODERATE- INCOME RESIDENTS, AND PRESERVING OUR UNIQUE CULTURAL AND HISTORIC CHARACTER. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | false |
| IRS990/MoreThan5000KToOrgInd | 0 | false |
| IRS990/MortgNotesPyblScrdInvstPropGrp/BOYAmt | 0 | 7464745 |
| IRS990/MortgNotesPyblScrdInvstPropGrp/EOYAmt | 0 | 7330125 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 3310039 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 3033687 |
| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | 1495 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 2497781 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 2404105 |
| IRS990/NondeductibleContributionsInd | 0 | false |
| IRS990/OccupancyGrp/FundraisingAmt | 0 | 538 |
| IRS990/OccupancyGrp/ManagementAndGeneralAmt | 0 | 50764 |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 122379 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 173681 |
| IRS990/OfficeExpensesGrp/FundraisingAmt | 0 | 39673 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 55976 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 95649 |
| IRS990/OfficerMailingAddressInd | 0 | false |
| IRS990/OperateHospitalInd | 0 | false |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 34794 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 45472 |
| IRS990/OtherEmployeeBenefitsGrp/FundraisingAmt | 0 | 34087 |
| IRS990/OtherEmployeeBenefitsGrp/ManagementAndGeneralAmt | 0 | 44663 |
| IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt | 0 | 225499 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 304249 |
| IRS990/OtherExpensesGrp/Desc | 0 | REPAIRS AND MAINTENANCE |
| IRS990/OtherExpensesGrp/Desc | 1 | GRANTS AND OTHER ASSISTAN |
| IRS990/OtherExpensesGrp/Desc | 2 | LICENSES, PERMITS & FEES |
| IRS990/OtherExpensesGrp/Desc | 3 | MEMBERSHIPS |
| IRS990/OtherExpensesGrp/FundraisingAmt | 0 | 7398 |
| IRS990/OtherExpensesGrp/FundraisingAmt | 1 | 280 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 8212 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 1 | 3249 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 2 | 8275 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 320861 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 19583 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 3737 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 3 | 1410 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 329073 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 19583 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 14384 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 9965 |
| IRS990/OtherLiabilitiesGrp/BOYAmt | 0 | 61017 |
| IRS990/OtherLiabilitiesGrp/EOYAmt | 0 | 49718 |
| IRS990/OtherRevenueMiscGrp/Desc | 0 | OTHER INCOME |
| IRS990/OtherRevenueMiscGrp/RelatedOrExemptFuncIncomeAmt | 0 | 9718 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 0 | 9718 |
| IRS990/OtherRevenueTotalAmt | 0 | 9718 |
| IRS990/OtherSalariesAndWagesGrp/FundraisingAmt | 0 | 188893 |
| IRS990/OtherSalariesAndWagesGrp/ManagementAndGeneralAmt | 0 | 247499 |
| IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt | 0 | 1249609 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 1686001 |
| IRS990/OthNotesLoansReceivableNetGrp/BOYAmt | 0 | 421212 |
| IRS990/OthNotesLoansReceivableNetGrp/EOYAmt | 0 | 517694 |
| IRS990/PartialLiquidationInd | 0 | false |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | false |
| IRS990/PayrollTaxesGrp/FundraisingAmt | 0 | 14382 |
| IRS990/PayrollTaxesGrp/ManagementAndGeneralAmt | 0 | 18844 |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 95143 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 128369 |
| IRS990/PledgesAndGrantsReceivableGrp/BOYAmt | 0 | 295736 |
| IRS990/PledgesAndGrantsReceivableGrp/EOYAmt | 0 | 150231 |
| IRS990/PoliticalCampaignActyInd | 0 | false |
| IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt | 0 | 81773 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 108962 |
| IRS990/PrincipalOfficerNm | 0 | JAY COBURN |
| IRS990/ProfessionalFundraisingInd | 0 | false |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 0 | 624200 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 1 | 624200 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 2 | 624200 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 3 | 624200 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 4 | 624200 |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | RENT REVENUE, NET |
| IRS990/ProgramServiceRevenueGrp/Desc | 1 | MANAGED PROPERTIES REIMBURSEM |
| IRS990/ProgramServiceRevenueGrp/Desc | 2 | MANAGEMENT AND CONSULTING FEE |
| IRS990/ProgramServiceRevenueGrp/Desc | 3 | FISHING PERMITS |
| IRS990/ProgramServiceRevenueGrp/Desc | 4 | NOTES INTEREST |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 903899 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 1 | 342106 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 2 | 205746 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 3 | 73732 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 4 | 38766 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 903899 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 1 | 342106 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 2 | 205746 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 3 | 73732 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 4 | 38766 |
| IRS990/ProgSrvcAccomActy2Grp/Desc | 0 | HOUSING RENTAL PROGRAMS - MANAGES 72 AFFORDABLE RENTAL HOMES ACROSS LOWER CAPE COD, INCLUDING STUDIOS TO 3 BEDROOMS, STAND-ALONES TO MULTI-FAMILY PROVIDING HOUSING FOR 140 PEOPLE. ADDITIONALLY, THE PROGRAM MANAGES 28 UNITS OF MARKET RATE (NOT AFFORDABLE UNITS) STUDIOS TO THREE BEDROOM. PROVIDING HOUSING FOR 54 PEOPLE. |
| IRS990/ProgSrvcAccomActy3Grp/Desc | 0 | BUSINESS DEVELOPMENT - PROVIDING ACCESS TO CAPITAL THROUGH MICRO LOANS, OFFERING ONE-ON-ONE GUIDANCE AND EDUCATIONAL WORKSHOPS AND SUPPORTING LOCAL FISHING/SHELLFISHING BUSINESSES WITH EXPERTISE. |
| IRS990/ProgSrvcAccomActyOtherGrp/Desc | 0 | OTHER HOUSING PROGRAMS |
| IRS990/ProhibitedTaxShelterTransInd | 0 | false |
| IRS990/PYContributionsGrantsAmt | 0 | 2206485 |
| IRS990/PYExcessBenefitTransInd | 0 | false |
| IRS990/PYInvestmentIncomeAmt | 0 | 199470 |
| IRS990/PYOtherExpensesAmt | 0 | 1753364 |
| IRS990/PYOtherRevenueAmt | 0 | 1928 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 1526819 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | 426356 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 1754982 |
| IRS990/PYTotalExpensesAmt | 0 | 3508346 |
| IRS990/PYTotalRevenueAmt | 0 | 3934702 |
| IRS990/QuidProQuoContributionsInd | 0 | false |
| IRS990/RcvFndsToPayPrsnlBnftCntrctInd | 0 | false |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | -276352 |
| IRS990/RegularMonitoringEnfrcInd | 0 | true |
| IRS990/RelatedEntityInd | 0 | false |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | false |
| IRS990/ReportInvestmentsOtherSecInd | 0 | false |
| IRS990/ReportLandBuildingEquipmentInd | 0 | true |
| IRS990/ReportOtherAssetsInd | 0 | false |
| IRS990/ReportOtherLiabilitiesInd | 0 | true |
| IRS990/ReportProgramRelatedInvstInd | 0 | false |
| IRS990/RevenueAmt | 0 | 1564249 |
| IRS990/SavingsAndTempCashInvstGrp/BOYAmt | 0 | 208914 |
| IRS990/SavingsAndTempCashInvstGrp/EOYAmt | 0 | 1102302 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearAmt | 0 | 1745037 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus1YearAmt | 0 | 2206485 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 3662193 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 2327490 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 1989090 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/TotalAmt | 0 | 11930295 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearAmt | 0 | 435 |