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| IRS990EZ/BooksInCareOfDetail/PhoneNum | 0 | 3306529800 |
| IRS990EZ/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 45 NORTH RD |
| IRS990EZ/BooksInCareOfDetail/USAddress/CityNm | 0 | Niles |
| IRS990EZ/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | OH |
| IRS990EZ/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 44446 |
| IRS990EZ/CashSavingsAndInvestmentsGrp/BOYAmt | 0 | 131747 |
| IRS990EZ/CashSavingsAndInvestmentsGrp/EOYAmt | 0 | 156271 |
| IRS990EZ/ChgMadeToOrgnzngDocNotRptInd | 0 | false |
| IRS990EZ/ContributionsGiftsGrantsEtcAmt | 0 | 108788 |
| IRS990EZ/DonorAdvisedFndsInd | 0 | false |
| IRS990EZ/EngagedInExcessBenefitTransInd | 0 | false |
| IRS990EZ/ExcessOrDeficitForYearAmt | 0 | 24117 |
| IRS990EZ/FeesAndOtherPymtToIndCntrctAmt | 0 | 350 |
| IRS990EZ/FiledScheduleAInd | 0 | true |
| IRS990EZ/ForeignFinancialAccountInd | 0 | false |
| IRS990EZ/ForeignOfficeInd | 0 | false |
| IRS990EZ/Form1120PolFiledInd | 0 | false |
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| IRS990EZ/Form990TotalAssetsGrp/EOYAmt | 0 | 156271 |
| IRS990EZ/GrantsAndSimilarAmountsPaidAmt | 0 | 73832 |
| IRS990EZ/GrossReceiptsAmt | 0 | 110175 |
| IRS990EZ/InfoInScheduleOPartIInd | 0 | X |
| IRS990EZ/InvestmentIncomeAmt | 0 | 1387 |
| IRS990EZ/LandAndBuildingsGrp/BOYAmt | 0 | 0 |
| IRS990EZ/LandAndBuildingsGrp/EOYAmt | 0 | 0 |
| IRS990EZ/LobbyingActivitiesInd | 0 | false |
| IRS990EZ/MadeLoansToFromOfficersInd | 0 | false |
| IRS990EZ/MethodOfAccountingAccrualInd | 0 | X |
| IRS990EZ/NetAssetsOrFundBalancesBOYAmt | 0 | 131747 |
| IRS990EZ/NetAssetsOrFundBalancesEOYAmt | 0 | 156271 |
| IRS990EZ/NetAssetsOrFundBalancesGrp/BOYAmt | 0 | 131747 |
| IRS990EZ/NetAssetsOrFundBalancesGrp/EOYAmt | 0 | 156271 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 0 | 20.00 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 1 | 5.00 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 2 | 2.00 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 3 | 2.00 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 4 | 2.00 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 5 | 2.00 |
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| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 1 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 2 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 3 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 4 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 5 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt | 0 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt | 1 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt | 2 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt | 3 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt | 4 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt | 5 | 0 |
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| IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt | 1 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt | 2 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt | 3 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt | 4 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt | 5 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 0 | LINDA TIIHONEN |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 1 | RICK PEDUZZI |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 2 | JUDY MURPHY |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 3 | MATT KRESIC |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 4 | KAREN L HAUSER |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 5 | MARGIE ALEXANDER |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 0 | EXECUTIVE DIRECTOR |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 1 | PRESIDENT |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 2 | SECRETARY |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 3 | DIRECTOR |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 4 | TREASURER |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 5 | DIRECTOR |
| IRS990EZ/OperateHospitalInd | 0 | false |
| IRS990EZ/Organization501c3Ind | 0 | X |
| IRS990EZ/OrganizationDissolvedEtcInd | 0 | false |
| IRS990EZ/OrganizationHadUBIInd | 0 | false |
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| IRS990EZ/OtherAssetsTotalDetail/EOYAmt | 0 | 0 |
| IRS990EZ/OtherChangesInNetAssetsAmt | 0 | 407 |
| IRS990EZ/OtherExpensesTotalAmt | 0 | 11876 |
| IRS990EZ/PartVIHghstPdCntrctProfSrvcTxt | 0 | NONE |
| IRS990EZ/PartVIOfCompOfHghstPdEmplTxt | 0 | NONE |
| IRS990EZ/PrimaryExemptPurposeTxt | 0 | PROVIDE ASSISTANCE IN MRDD |
| IRS990EZ/ProgramSrvcAccomplishmentGrp/DescriptionProgramSrvcAccomTxt | 0 | PROVIDE ASSISTANCE IN MRDD CONSUMER ACTIVITIES |
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| IRS990EZ/ProhibitedTaxShelterTransInd | 0 | false |
| IRS990EZ/RelatedOrganizationCtrlEntInd | 0 | false |
| IRS990EZ/ScheduleBNotRequiredInd | 0 | X |
| IRS990EZ/SchoolOperatingInd | 0 | false |
| IRS990EZ/SubjectToProxyTaxInd | 0 | false |
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| IRS990EZ/TotalRevenueAmt | 0 | 110175 |
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| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus3YearsAmt | 0 | 86150 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus4YearsAmt | 0 | 89598 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/TotalAmt | 0 | 443659 |
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| IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus1YearAmt | 0 | 1389 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus2YearsAmt | 0 | 1369 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus3YearsAmt | 0 | 817 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus4YearsAmt | 0 | 1354 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/TotalAmt | 0 | 6316 |
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| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearMinus2YearsAmt | 0 | 1369 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearMinus3YearsAmt | 0 | 817 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearMinus4YearsAmt | 0 | 1354 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/TotalAmt | 0 | 6316 |
| IRS990ScheduleA/InvestmentIncomeCYPct | 0 | 0.01000 |
| IRS990ScheduleA/InvestmentIncomePYPct | 0 | 0.01000 |
| IRS990ScheduleA/PubliclySupportedOrg509a2Ind | 0 | X |
| IRS990ScheduleA/PublicSupportCY509Pct | 0 | 0.98600 |
| IRS990ScheduleA/PublicSupportPY509Pct | 0 | 0.98650 |
| IRS990ScheduleA/PublicSupportTotal509Amt | 0 | 443659 |
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| IRS990ScheduleA/Total509Grp/CurrentTaxYearAmt | 0 | 108788 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus1YearAmt | 0 | 97490 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus2YearsAmt | 0 | 61633 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus3YearsAmt | 0 | 86150 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus4YearsAmt | 0 | 89598 |
| IRS990ScheduleA/Total509Grp/TotalAmt | 0 | 443659 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearAmt | 0 | 110175 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus1YearAmt | 0 | 98879 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus2YearsAmt | 0 | 63002 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus3YearsAmt | 0 | 86967 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus4YearsAmt | 0 | 90952 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/TotalAmt | 0 | 449975 |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | Activity CHARITABLE Grantee VARIOUS PROJECTS Street 45 NORTH ROAD City, State, Zip Niles, OH 44446Amount 21,418Activity CHARITABLE Grantee TTC/CWS/NWS/FFSF/RGP/CA DONATIONS Street 45 NORTH ROAD City, State, Zip Niles, OH 44446Amount 52,414 |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | Description AmountPROGRAM SERVICES 10,801LIABILITY INSURANCE 850LICENSING FEES STATE ATTY GENERAL 100MEETINGS SEMINARS 125 |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 2 | Description AmountMISC SHORT TERM LIABILITES 407 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | List of grants and similar amounts paid Part I line 10 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | Description of other expenses Part I line 16 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | Other changes in net assets or fund balances Part I line 20 |
| ReturnHeader/BuildTS | 0 | 2017-02-10 21:41:12Z |
| ReturnHeader/BusinessOfficerGrp/DiscussWithPaidPreparerInd | 0 | false |
| ReturnHeader/BusinessOfficerGrp/PersonNm | 0 | LINDA TIIHONEN |
| ReturnHeader/BusinessOfficerGrp/PersonTitleTxt | 0 | EXECUTIVE DIREC |
| ReturnHeader/BusinessOfficerGrp/PhoneNum | 0 | 3306529800 |
| ReturnHeader/BusinessOfficerGrp/SignatureDt | 0 | 2017-06-20 |
| ReturnHeader/Filer/BusinessName/BusinessNameLine1Txt | 0 | FAIRHAVEN FOUNDATION |
| ReturnHeader/Filer/BusinessNameControlTxt | 0 | FAIR |
| ReturnHeader/Filer/EIN | 0 | 341839289 |
| ReturnHeader/Filer/USAddress/AddressLine1Txt | 0 | 45 NORTH RD |
| ReturnHeader/Filer/USAddress/CityNm | 0 | Niles |
| ReturnHeader/Filer/USAddress/StateAbbreviationCd | 0 | OH |
| ReturnHeader/Filer/USAddress/ZIPCd | 0 | 44446 |
| ReturnHeader/FilingSecurityInformation/AtSubmissionCreationDeviceId | 0 | ADB50ABA8AD8B07707F16776ABB79E1ADDA34631 |
| ReturnHeader/FilingSecurityInformation/AtSubmissionFilingDeviceId | 0 | ADB50ABA8AD8B07707F16776ABB79E1ADDA34631 |
| ReturnHeader/FilingSecurityInformation/FederalOriginalSubmissionId | 0 | 3416602017178yldsobp |
| ReturnHeader/FilingSecurityInformation/FederalOriginalSubmissionIdDt | 0 | 2017-06-27 |
| ReturnHeader/FilingSecurityInformation/FilingLicenseTypeCd | 0 | P |
| ReturnHeader/FilingSecurityInformation/IPAddress/IPv4AddressTxt | 0 | 162.234.210.66 |
| ReturnHeader/FilingSecurityInformation/IPDt | 0 | 2017-06-27 |
| ReturnHeader/FilingSecurityInformation/IPTm | 0 | 08:53:57 |
| ReturnHeader/PreparerFirmGrp/PreparerFirmEIN | 0 | 462406092 |
| ReturnHeader/PreparerFirmGrp/PreparerFirmName/BusinessNameLine1Txt | 0 | DAVID W MULLINS TAX SERVICE |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/AddressLine1Txt | 0 | 53 EAST PARK AVE |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/CityNm | 0 | Niles |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/StateAbbreviationCd | 0 | OH |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/ZIPCd | 0 | 44446 |
| ReturnHeader/PreparerPersonGrp/PhoneNum | 0 | 3306523642 |
| ReturnHeader/PreparerPersonGrp/PreparationDt | 0 | 2017-06-22 |
| ReturnHeader/PreparerPersonGrp/PreparerPersonNm | 0 | DAVID W MULLINS |
| ReturnHeader/PreparerPersonGrp/SelfEmployedInd | 0 | X |
| ReturnHeader/ReturnTs | 0 | 2017-06-22T09:07:37-04:00 |
| ReturnHeader/ReturnTypeCd | 0 | 990EZ |
| ReturnHeader/TaxPeriodBeginDt | 0 | 2016-01-01 |
| ReturnHeader/TaxPeriodEndDt | 0 | 2016-12-31 |
| ReturnHeader/TaxYr | 0 | 2016 |