| IRS990/AccountantCompileOrReviewInd | 0 | 0 |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 1090917 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 3368907 |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 334436 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 309793 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | TO PRESERVE THE LEGACY OF MARYGROVE COLLEGE THROUGH THE ADVANCEMENT OF INTEGRATED P-20 EDUCATIONAL OPPORTUNITIES FOR LOW-INCOME CHILDREN AND FAMILIES, PARTICULARLY WITHIN THE LIVERNOIS AND MCNICHOLS CORRIDORS OF DETROIT, MICHIGAN. |
| IRS990/AdvertisingGrp/ProgramServicesAmt | 0 | 10905 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 10905 |
| IRS990/AllOtherContributionsAmt | 0 | 6889591 |
| IRS990/AllOtherExpensesGrp/ProgramServicesAmt | 0 | 144841 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 144841 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | 1 |
| IRS990/AuditCommitteeInd | 0 | 1 |
| IRS990/BackupWthldComplianceInd | 0 | 1 |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | AARON SEYBERT |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 2485020620 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 3215 WEST BIG BEAVER ROAD |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | TROY |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | MI |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 480842818 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | 0 |
| IRS990/BusinessRlnWithFamMemInd | 0 | 0 |
| IRS990/BusinessRlnWithOrgMemInd | 0 | 0 |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 119634 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 8519751 |
| IRS990/ChangeToOrgDocumentsInd | 0 | 0 |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 5 |
| IRS990/CollectionsOfArtInd | 0 | 0 |
| IRS990/CompCurrentOfcrDirectorsGrp/FundraisingAmt | 0 | 57986 |
| IRS990/CompCurrentOfcrDirectorsGrp/ManagementAndGeneralAmt | 0 | 289927 |
| IRS990/CompCurrentOfcrDirectorsGrp/ProgramServicesAmt | 0 | 231551 |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 579464 |
| IRS990/CompensationFromOtherSrcsInd | 0 | 0 |
| IRS990/CompensationProcessCEOInd | 0 | 1 |
| IRS990/CompensationProcessOtherInd | 0 | 0 |
| IRS990/ConflictOfInterestPolicyInd | 0 | 1 |
| IRS990/ConservationEasementsInd | 0 | 0 |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | 1 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 0 | 975197 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 1 | 409122 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 2 | 275972 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 3 | 183300 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 4 | 166306 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 0 | 1441 WEST LONG LAKE SUITE 200 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 1 | PO BOX 828854 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 2 | 70200 HENRY ROSS DRIVE |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 3 | PO BOX 80145 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 4 | 1901 ST ANTOINE 6TH FLOOR |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 0 | TROY |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 1 | PHILADELPHIA |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 2 | ROMEO |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 3 | ROCHESTER |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 4 | DETROIT |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 0 | MI |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 1 | PA |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 2 | MI |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 3 | MI |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 4 | MI |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 0 | 48098 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 1 | 19182 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 2 | 48065 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 3 | 48308 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 4 | 48226 |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 0 | INTEGRATED DESIGN SOLUTIONS LLC |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 1 | ALLIED UNIVERSAL SECURITY SERVICES |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 2 | DJ MCCONNELL CO HVAC SERVICE |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 3 | BOD CONSULTING |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 4 | BODMAN PLC |
| IRS990/ContractorCompensationGrp/ServicesDesc | 0 | CONSTRUCTION |
| IRS990/ContractorCompensationGrp/ServicesDesc | 1 | SECURITY |
| IRS990/ContractorCompensationGrp/ServicesDesc | 2 | MAINTENANCE |
| IRS990/ContractorCompensationGrp/ServicesDesc | 3 | CONSTRUCTION |
| IRS990/ContractorCompensationGrp/ServicesDesc | 4 | LEGAL |
| IRS990/CreditCounselingInd | 0 | 0 |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 6889591 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 14216 |
| IRS990/CYInvestmentIncomeAmt | 0 | 1722 |
| IRS990/CYOtherExpensesAmt | 0 | 4114059 |
| IRS990/CYOtherRevenueAmt | 0 | 968478 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 0 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 3108786 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 622730 |
| IRS990/CYTotalExpensesAmt | 0 | 4751005 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 214539 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 7859791 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | 0 |
| IRS990/DeductibleArtContributionInd | 0 | 0 |
| IRS990/DeductibleNonCashContriInd | 0 | 0 |
| IRS990/DeferredRevenueGrp/EOYAmt | 0 | 12540 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 0 |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 390339 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 390339 |
| IRS990/Desc | 0 | OPERATION OF PROPERTY HELD AS PART OF MARYGROVE COLLEGE LEGACY |
| IRS990/DescribedInSection501c3Ind | 0 | 1 |
| IRS990/DisregardedEntityInd | 0 | 0 |
| IRS990/DocumentRetentionPolicyInd | 0 | 1 |
| IRS990/DonorAdvisedFundInd | 0 | 0 |
| IRS990/DonorRestrictionNetAssetsGrp/BOYAmt | 0 | 35000 |
| IRS990/DonorRestrictionNetAssetsGrp/EOYAmt | 0 | 2488844 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | 0 |
| IRS990/ElectionOfBoardMembersInd | 0 | 0 |
| IRS990/EmployeeCnt | 0 | 3 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | 0 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | 0 |
| IRS990/ExpenseAmt | 0 | 3568740 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 0 |
| IRS990/FederalGrantAuditRequiredInd | 0 | 0 |
| IRS990/FeesForServicesAccountingGrp/FundraisingAmt | 0 | 9980 |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 49900 |
| IRS990/FeesForServicesAccountingGrp/ProgramServicesAmt | 0 | 39920 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 99800 |
| IRS990/FeesForServicesLegalGrp/FundraisingAmt | 0 | 22273 |
| IRS990/FeesForServicesLegalGrp/ManagementAndGeneralAmt | 0 | 111363 |
| IRS990/FeesForServicesLegalGrp/ProgramServicesAmt | 0 | 89090 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 222726 |
| IRS990/FeesForServicesManagementGrp/FundraisingAmt | 0 | 45380 |
| IRS990/FeesForServicesManagementGrp/ManagementAndGeneralAmt | 0 | 226902 |
| IRS990/FeesForServicesManagementGrp/ProgramServicesAmt | 0 | 181522 |
| IRS990/FeesForServicesManagementGrp/TotalAmt | 0 | 453804 |
| IRS990/FeesForServicesOtherGrp/FundraisingAmt | 0 | 47452 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 237262 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 189810 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 474524 |
| IRS990/ForeignActivitiesInd | 0 | 0 |
| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 0 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 1 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 2 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 3 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 10.00 |
| 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 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 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/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 | 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/PersonNm | 0 | SR MARY JANE HERB |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | AARON SEYBERT |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | GLENDA PRICE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | ELIZABETH A BURNS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | ROSE DESLOOVER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | JAMES FEAGIN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | MICHAEL FORSYTH |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | ANTOINE GARIBALDI |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | WENDY LEWIS JACKSON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | TOM LEWAND |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | RACHEAL ALLEN |
| 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 | 395462 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 10 | 184002 |
| 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/TitleTxt | 0 | CHAIR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | SECRETARY |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | CHIEF EXECUTIVE OFFICER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | CHIEF OPERATING OFFICER |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | 1 |
| IRS990/FormationYr | 0 | 2017 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 0 |
| IRS990/FSAuditedBasisGrp/ConsolidatedBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | 1 |
| IRS990/FundraisingActivitiesInd | 0 | 0 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 9 |
| IRS990/GrantAmt | 0 | 14216 |
| IRS990/GrantsPayableGrp/BOYAmt | 0 | 5984 |
| IRS990/GrantsToDomesticOrgsGrp/ProgramServicesAmt | 0 | 14216 |
| IRS990/GrantsToDomesticOrgsGrp/TotalAmt | 0 | 14216 |
| IRS990/GrantsToIndividualsInd | 0 | 0 |
| IRS990/GrantsToOrganizationsInd | 0 | 1 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
| IRS990/GrossReceiptsAmt | 0 | 7859791 |
| IRS990/GrossRentsGrp/RealAmt | 0 | 795688 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 1 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 0 |
| IRS990/IndependentVotingMemberCnt | 0 | 9 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 2 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartIIIInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InsuranceGrp/FundraisingAmt | 0 | 22439 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 25645 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 272479 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 320563 |
| IRS990/IntangibleAssetsGrp/EOYAmt | 0 | 63905 |
| IRS990/InterestGrp/ProgramServicesAmt | 0 | 418316 |
| IRS990/InterestGrp/TotalAmt | 0 | 418316 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 1722 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 1722 |
| IRS990/InvestmentInJointVentureInd | 0 | 0 |
| IRS990/IRPDocumentCnt | 0 | 0 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 876547 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 11595365 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 30739835 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 31616382 |
| IRS990/LegalDomicileStateCd | 0 | MI |
| IRS990/LessRentalExpensesGrp/RealAmt | 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/MiscellaneousRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 172790 |
| IRS990/MiscellaneousRevenueGrp/TotalRevenueColumnAmt | 0 | 172790 |
| IRS990/MissionDesc | 0 | TO RECEIVE AND ADMINISTER FUNDS AND PROPERTY AND TO OPERATE EXCLUSIVELY FOR CHARITABLE, EDUCATIONAL, SCIENTIFIC, AND LITERARY PURPOSES, AS WELL AS TO PRESERVE THE LEGACY OF MARYGROVE COLLEGE THROUGH THE ADVANCEMENT OF EDUCATIONAL OPPORTUNITIES FOR CHILDREN AND FAMILIES, PARTICULARLY WITHIN THE LIVERNOIS AND MCNICHOLS CORRIDORS OF DETROIT, MICHIGAN, BY PROVIDING SPACE, INFRASTRUCTURE, AND OTHER ASSISTANCE TO SUPPORT INTEGRATED P-20 EDUCATION MODELS THAT PROVIDE COMPREHENSIVE SUPPORT FROM PRE-NATAL THROUGH COLLEGE TO CAREER AND OTHER COMMUNITY-BASED ACTIVITIES AND PROGRAMMING. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | 0 |
| IRS990/MoreThan5000KToOrgInd | 0 | 0 |
| IRS990/MortgNotesPyblScrdInvstPropGrp/BOYAmt | 0 | 6484484 |
| IRS990/MortgNotesPyblScrdInvstPropGrp/EOYAmt | 0 | 27979371 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 5808312 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 8917098 |
| IRS990/NetRentalIncomeOrLossGrp/RelatedOrExemptFuncIncomeAmt | 0 | 795688 |
| IRS990/NetRentalIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | 795688 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 5773312 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 6428254 |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 428448 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 428448 |
| IRS990/OfficeExpensesGrp/FundraisingAmt | 0 | 4703 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 5094 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 29391 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 39188 |
| IRS990/OfficerMailingAddressInd | 0 | 0 |
| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 0 |
| IRS990/OtherEmployeeBenefitsGrp/FundraisingAmt | 0 | 1305 |
| IRS990/OtherEmployeeBenefitsGrp/ManagementAndGeneralAmt | 0 | 6527 |
| IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt | 0 | 5222 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 13054 |
| IRS990/OtherExpensesGrp/Desc | 0 | REPAIRS AND MAINTENANCE |
| IRS990/OtherExpensesGrp/Desc | 1 | SECURITY |
| IRS990/OtherExpensesGrp/Desc | 2 | DETROIT ARTS SUPPORT |
| IRS990/OtherExpensesGrp/Desc | 3 | INCUBATOR |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 482864 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 416881 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 116460 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 3 | 94400 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 482864 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 416881 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 116460 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 94400 |
| IRS990/OtherLiabilitiesGrp/BOYAmt | 0 | 2350 |
| IRS990/OtherLiabilitiesGrp/EOYAmt | 0 | 2350 |
| IRS990/OtherRevenueTotalAmt | 0 | 172790 |
| IRS990/PartialLiquidationInd | 0 | 0 |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | 0 |
| IRS990/PayrollTaxesGrp/FundraisingAmt | 0 | 3021 |
| IRS990/PayrollTaxesGrp/ManagementAndGeneralAmt | 0 | 15106 |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 12085 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 30212 |
| IRS990/PoliticalCampaignActyInd | 0 | 0 |
| IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt | 0 | 117914 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 118888 |
| IRS990/PrincipalOfficerNm | 0 | SR MARY JANE HERB |
| IRS990/ProfessionalFundraisingInd | 0 | 0 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | 0 |
| IRS990/PYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/PYContributionsGrantsAmt | 0 | 5491539 |
| IRS990/PYExcessBenefitTransInd | 0 | 0 |
| IRS990/PYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/PYInvestmentIncomeAmt | 0 | 574 |
| IRS990/PYOtherExpensesAmt | 0 | 3833526 |
| IRS990/PYOtherRevenueAmt | 0 | 574526 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 0 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | 2233113 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 0 |
| IRS990/PYTotalExpensesAmt | 0 | 3833526 |
| IRS990/PYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/PYTotalRevenueAmt | 0 | 6066639 |
| IRS990/QuidProQuoContributionsInd | 0 | 0 |
| IRS990/RcvFndsToPayPrsnlBnftCntrctInd | 0 | 0 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | 3108786 |
| IRS990/RegularMonitoringEnfrcInd | 0 | 1 |
| IRS990/RelatedEntityInd | 0 | 1 |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | 0 |
| IRS990/RentalIncomeOrLossGrp/RealAmt | 0 | 795688 |
| IRS990/ReportInvestmentsOtherSecInd | 0 | 0 |
| IRS990/ReportLandBuildingEquipmentInd | 0 | 1 |
| IRS990/ReportOtherAssetsInd | 0 | 0 |
| IRS990/ReportOtherLiabilitiesInd | 0 | 1 |
| IRS990/ReportProgramRelatedInvstInd | 0 | 0 |
| IRS990/RevenueAmt | 0 | 968478 |
| IRS990/SavingsAndTempCashInvstGrp/BOYAmt | 0 | 1224698 |
| IRS990/SavingsAndTempCashInvstGrp/EOYAmt | 0 | 528094 |
| IRS990ScheduleA/First5Years170Ind | 0 | X |
| IRS990ScheduleA/Form990ScheduleAPartVIGrp/ExplanationTxt | 0 | OTHER INCOME - 2020 AMOUNT: $ 172,790. |
| IRS990ScheduleA/Form990ScheduleAPartVIGrp/ExplanationTxt | 1 | MARYGROVE CONSERVANCY COMMENCED OPERATIONS EFFECTIVE SEPTEMBER 5, 2017. THEREFORE, THE 2017 COLUMN REPRESENTS A SHORT PERIOD. |
| IRS990ScheduleA/Form990ScheduleAPartVIGrp/FormAndLineReferenceDesc | 0 | SCHEDULE A, PART II, LINE 10, EXPLANATION OF OTHER INCOME: |
| IRS990ScheduleA/Form990ScheduleAPartVIGrp/FormAndLineReferenceDesc | 1 | PART II, SHORT YEAR EXPLANATION: |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearAmt | 0 | 6889591 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus1YearAmt | 0 | 5491539 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 350000 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 3067609 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/TotalAmt | 0 | 15798739 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearAmt | 0 | 797410 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus1YearAmt | 0 | 575100 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 3 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/TotalAmt | 0 | 1372513 |
| IRS990ScheduleA/OtherIncome170Grp/CurrentTaxYearAmt | 0 | 172790 |
| IRS990ScheduleA/OtherIncome170Grp/TotalAmt | 0 | 172790 |
| IRS990ScheduleA/PublicOrganization170Ind | 0 | X |
| IRS990ScheduleA/PublicSupportTotal170Amt | 0 | 10339081 |
| IRS990ScheduleA/SubstantialContributorsTotAmt | 0 | 5459658 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearAmt | 0 | 6889591 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus1YearAmt | 0 | 5491539 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 350000 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 3067609 |
| IRS990ScheduleA/TotalCalendarYear170Grp/TotalAmt | 0 | 15798739 |
| IRS990ScheduleA/TotalSupportAmt | 0 | 17344042 |
| IRS990ScheduleB/ContributorInformationGrp/ContributorBusinessName/BusinessNameLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorNum | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine2 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/City | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/State | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/ZIPCode | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/TotalContributionsAmt | 0 | RESTRICTED |
| IRS990/ScheduleBRequiredInd | 0 | 1 |
| IRS990ScheduleD/BuildingsGrp/BookValueAmt | 0 | 8257516 |
| IRS990ScheduleD/BuildingsGrp/DepreciationAmt | 0 | 679484 |
| IRS990ScheduleD/BuildingsGrp/OtherCostOrOtherBasisAmt | 0 | 8937000 |
| IRS990ScheduleD/FootnoteTextInd | 0 | X |
| IRS990ScheduleD/LandGrp/BookValueAmt | 0 | 993000 |
| IRS990ScheduleD/LandGrp/OtherCostOrOtherBasisAmt | 0 | 993000 |
| IRS990ScheduleD/OtherLandBuildingsGrp/BookValueAmt | 0 | 21489319 |
| IRS990ScheduleD/OtherLandBuildingsGrp/DepreciationAmt | 0 | 197063 |
| IRS990ScheduleD/OtherLandBuildingsGrp/OtherCostOrOtherBasisAmt | 0 | 21686382 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Amt | 0 | 2350 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Desc | 0 | SECURITY DEPOSITS |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 0 | THE CONSERVANCY'S MANAGEMENT IS NOT AWARE OF ANY UNCERTAIN TAX POSITIONS OR UNRECOGNIZED TAX BENEFITS AS OF DECEMBER 31, 2020 OR 2019. |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | PART X, LINE 2: |
| IRS990ScheduleD/TotalBookValueLandBuildingsAmt | 0 | 30739835 |
| IRS990ScheduleD/TotalLiabilityAmt | 0 | 2350 |
| IRS990ScheduleI/GrantRecordsMaintainedInd | 0 | 1 |