| IRS990/AccountantCompileOrReviewInd | 0 | false |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 3198504 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 4621265 |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 848649 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 1219917 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | false |
| IRS990/ActivityOrMissionDesc | 0 | KEYSTONE COLLEGE EDUCATES STUDENTS IN A LIBERAL ARTS TRADITION THAT VALUES CIVILITY, INTEGRITY, AND CURIOUSITY, FOSTERING A GLOBAL PERSPECTIVE ON CULTURAL DIVERSITY, ENVIRONMENTAL SUSTAINABILITY, AND LIFE-LONG LEARNING. |
| IRS990/AdvertisingGrp/ProgramServicesAmt | 0 | 148910 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 148910 |
| IRS990/AllOtherContributionsAmt | 0 | 830327 |
| IRS990/AllOtherExpensesGrp/ProgramServicesAmt | 0 | 798101 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 798101 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | true |
| IRS990/BackupWthldComplianceInd | 0 | true |
| IRS990/BooksInCareOfDetail/PersonNm | 0 | JOHN PULLO |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 5709458000 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | ONE COLLEGE GREEN |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | LA PLUME |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | PA |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 18440 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | false |
| IRS990/BusinessRlnWithFamMemInd | 0 | false |
| IRS990/BusinessRlnWithOrgMemInd | 0 | false |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 2896823 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 80027 |
| IRS990/ChangeToOrgDocumentsInd | 0 | false |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 5 |
| IRS990/CollectionsOfArtInd | 0 | true |
| IRS990/CompensationFromOtherSrcsInd | 0 | false |
| IRS990/CompensationProcessCEOInd | 0 | true |
| IRS990/CompensationProcessOtherInd | 0 | true |
| IRS990/ConferencesMeetingsGrp/ProgramServicesAmt | 0 | 31866 |
| IRS990/ConferencesMeetingsGrp/TotalAmt | 0 | 31866 |
| IRS990/ConflictOfInterestPolicyInd | 0 | true |
| IRS990/ConservationEasementsInd | 0 | false |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | false |
| IRS990/ContractorCompensationGrp/CompensationAmt | 0 | 1154220 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 1 | 1082728 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 2 | 846200 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 3 | 534119 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 4 | 300000 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 0 | SOUTH MAIN AVENUE |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 1 | PO BOX 360170 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 2 | SOUTH MAIN AVENUE |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 3 | 1650 TYSONS BLVD |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 4 | SOUTH MAIN AVENUE |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 0 | SCRANTON |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 1 | PITTSBURGH |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 2 | SCRANTON |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 3 | MCLEAN |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 4 | SCRANTON |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 0 | PA |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 1 | PA |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 2 | PA |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 3 | VA |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 4 | PA |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 0 | 18504 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 1 | 15251 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 2 | 18504 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 3 | 22102 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 4 | 18504 |
| IRS990/ContractorCompensationGrp/ContractorName/PersonNm | 0 | KC FACILITIES LLC |
| IRS990/ContractorCompensationGrp/ContractorName/PersonNm | 1 | SODEXO DINING SERVICES |
| IRS990/ContractorCompensationGrp/ContractorName/PersonNm | 2 | ATR LAPLUME LLC |
| IRS990/ContractorCompensationGrp/ContractorName/PersonNm | 3 | CAPITAL EDUCATION |
| IRS990/ContractorCompensationGrp/ContractorName/PersonNm | 4 | KEYSTONE COMMONS DEVELOPMENT LLC |
| IRS990/ContractorCompensationGrp/ServicesDesc | 0 | MAINTENANCE |
| IRS990/ContractorCompensationGrp/ServicesDesc | 1 | FOOD SERVICES |
| IRS990/ContractorCompensationGrp/ServicesDesc | 2 | CONSTRUCTION |
| IRS990/ContractorCompensationGrp/ServicesDesc | 3 | EDUC SERVICES |
| IRS990/ContractorCompensationGrp/ServicesDesc | 4 | CONSTRUCTION |
| IRS990/CreditCounselingInd | 0 | false |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 4399918 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 2398008 |
| IRS990/CYInvestmentIncomeAmt | 0 | 1781 |
| IRS990/CYOtherExpensesAmt | 0 | 12531889 |
| IRS990/CYOtherRevenueAmt | 0 | 5214692 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 12075052 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | -5313919 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 12075465 |
| IRS990/CYTotalExpensesAmt | 0 | 27005362 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 0 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 21691443 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | false |
| IRS990/DeductibleArtContributionInd | 0 | false |
| IRS990/DeductibleNonCashContriInd | 0 | false |
| IRS990/DeferredRevenueGrp/BOYAmt | 0 | 1362530 |
| IRS990/DeferredRevenueGrp/EOYAmt | 0 | 1362530 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | false |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 2170295 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 2170295 |
| IRS990/Desc | 0 | KEYSTONE COLLEGE IS A VIBRANT AND DIVERSE CAMPUS WHEREBY OUR GRADUATES ARE LIFE-LONG LEARNERS WHO ARE ACTIVELY ENGAGED, CONTRIBUTE TO THEIR COMMUNITIES, AND THRIVE IN THE WORLD. NEARLY 1,400 STUDENTS COME FROM NEARBY STATES SUCH AS NEW YORK, NEW JERSEY, AND MARYLAND, AS WELL AS NATIONALLY AND INTERNATIONALLY. KEYSTONE COLLEGE IS A FULLY ACCREDITED AND HIGHLY RESPECTED INSTITUTION OF HIGHER EDUCATION OFFERING ASSOCIATE, BACHELOR'S AND MASTER'S DEGREES. |
| IRS990/DescribedInSection501c3Ind | 0 | true |
| IRS990/DisregardedEntityInd | 0 | false |
| IRS990/DocumentRetentionPolicyInd | 0 | true |
| IRS990/DonorAdvisedFundInd | 0 | false |
| IRS990/DonorRestrictionNetAssetsGrp/BOYAmt | 0 | 9777116 |
| IRS990/DonorRestrictionNetAssetsGrp/EOYAmt | 0 | 18272942 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | true |
| IRS990/ElectionOfBoardMembersInd | 0 | false |
| IRS990/EmployeeCnt | 0 | 534 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | true |
| IRS990/EngagedInExcessBenefitTransInd | 0 | false |
| IRS990/ExpenseAmt | 0 | 27005362 |
| IRS990/FamilyOrBusinessRlnInd | 0 | false |
| IRS990/FederalGrantAuditPerformedInd | 0 | true |
| IRS990/FederalGrantAuditRequiredInd | 0 | true |
| IRS990/FeesForServicesAccountingGrp/ProgramServicesAmt | 0 | 66750 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 66750 |
| IRS990/FeesForServicesLegalGrp/ProgramServicesAmt | 0 | 22450 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 22450 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 2409121 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 2409121 |
| 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 | 50.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 50.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 2.00 |
| 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 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 18 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 19 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 20 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 21 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 22 | 50.00 |
| 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/IndividualTrusteeOrDirectorInd | 16 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 17 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 18 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 19 | 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/OtherCompensationAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 7240 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 2 | 6949 |
| 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 | 0 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | JOHN PULLO |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | F STUART RENDA |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | FRANCES LANGAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | T ATKINS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | SAM CECCACCI |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | JAMES CLARK |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | JAMES B DAVIS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | JOHNATHAN L DAVIS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | NATALIE GELB |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | DAN HAGGERTY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | KIRBY HICKEY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | JOHNATHAN VIPOND III |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | MICHAEL NARCAVAGE III |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 13 | B JOHNSON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 14 | GRETCHEN LUDDERS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 15 | JOHN S MORRISON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 16 | A NIVERT |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 17 | R SWARTLEY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 18 | JENNIFER J WALSH |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 19 | JASON WASHO |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 20 | R WILBUR |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 21 | O WOROZBYT |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 22 | KAREN K YARRISH |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 240000 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 138068 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 2 | 116916 |
| 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 | 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/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/TitleTxt | 0 | PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | VP FINANCE & |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | VP INSITITUT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | CHAIR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | FIRST VICE-C |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 13 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 14 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 15 | SECRETARY |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 16 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 17 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 18 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 19 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 20 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 21 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 22 | PROVOST/VP A |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | true |
| IRS990/FormationYr | 0 | 1935 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | false |
| IRS990/FSAuditedInd | 0 | false |
| IRS990/FundraisingActivitiesInd | 0 | true |
| IRS990/FundraisingDirectExpensesAmt | 0 | 31012 |
| IRS990/FundraisingGrossIncomeAmt | 0 | 50596 |
| IRS990/GamingActivitiesInd | 0 | false |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 17 |
| IRS990/GovernmentGrantsAmt | 0 | 3569591 |
| IRS990/GrantAmt | 0 | 2398008 |
| IRS990/GrantsToDomesticIndividualsGrp/ProgramServicesAmt | 0 | 2398008 |
| IRS990/GrantsToDomesticIndividualsGrp/TotalAmt | 0 | 2398008 |
| IRS990/GrantsToIndividualsInd | 0 | true |
| IRS990/GrantsToOrganizationsInd | 0 | false |
| IRS990/GrantToRelatedPersonInd | 0 | false |
| IRS990/GrossReceiptsAmt | 0 | 21722455 |
| IRS990/GroupReturnForAffiliatesInd | 0 | false |
| IRS990/IncludeFIN48FootnoteInd | 0 | true |
| IRS990/IndependentAuditFinclStmtInd | 0 | true |
| IRS990/IndependentVotingMemberCnt | 0 | 16 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 3 |
| IRS990/IndoorTanningServicesInd | 0 | false |
| IRS990/InfoInScheduleOPartIIIInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InformationTechnologyGrp/ProgramServicesAmt | 0 | 72404 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 72404 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 495908 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 495908 |
| IRS990/InterestGrp/ProgramServicesAmt | 0 | 595736 |
| IRS990/InterestGrp/TotalAmt | 0 | 595736 |
| IRS990/InvestmentIncomeGrp/RelatedOrExemptFuncIncomeAmt | 0 | 1781 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 1781 |
| IRS990/InvestmentInJointVentureInd | 0 | false |
| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 4719038 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 3599038 |
| IRS990/IRPDocumentCnt | 0 | 40 |
| IRS990/IRPDocumentW2GCnt | 0 | 36 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 50452876 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 25871324 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 25023297 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 75476173 |
| IRS990/LegalDomicileStateCd | 0 | PA |
| IRS990/LoanOutstandingInd | 0 | false |
| IRS990/LobbyingActivitiesInd | 0 | false |
| IRS990/LocalChaptersInd | 0 | false |
| IRS990/MaterialDiversionOrMisuseInd | 0 | false |
| IRS990/MembersOrStockholdersInd | 0 | false |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | true |
| IRS990/MinutesOfGoverningBodyInd | 0 | true |
| IRS990/MissionDesc | 0 | KEYSTONE COLLEGE EDUCATES STUDENTS IN A LIBERAL ARTS TRADITION THAT VALUES CIVILITY, INTEGRITY, AND CURIOUSITY, FOSTERING A GLOBAL PERSPECTIVE ON CULTURAL DIVERSITY, ENVIRONMENTAL SUSTAINABILITY, AND LIFE-LONG LEARNING. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | false |
| IRS990/MoreThan5000KToOrgInd | 0 | false |
| IRS990/MortgNotesPyblScrdInvstPropGrp/BOYAmt | 0 | 15671366 |
| IRS990/MortgNotesPyblScrdInvstPropGrp/EOYAmt | 0 | 15877943 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 13931171 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 8717387 |
| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | 19584 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 4154055 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | -9555555 |
| IRS990/NondeductibleContributionsInd | 0 | false |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 932877 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 932877 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 35941 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 35941 |
| IRS990/OfficerMailingAddressInd | 0 | false |
| IRS990/OperateHospitalInd | 0 | false |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 2637538 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 2536736 |
| IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt | 0 | 2249831 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 2249831 |
| IRS990/OtherExpensesGrp/Desc | 0 | FOOD SERVICE |
| IRS990/OtherExpensesGrp/Desc | 1 | OTHER |
| IRS990/OtherExpensesGrp/Desc | 2 | PROGRAM MATERIALS |
| IRS990/OtherExpensesGrp/Desc | 3 | REPAIRS & MAINTENANCE |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 1941499 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 967468 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 848455 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 3 | 652021 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 1941499 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 967468 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 848455 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 652021 |
| IRS990/OtherLiabilitiesGrp/BOYAmt | 0 | 4580077 |
| IRS990/OtherLiabilitiesGrp/EOYAmt | 0 | 3824071 |
| IRS990/OtherRevenueMiscGrp/Desc | 0 | AUXILLARY ENTERPRISES |
| IRS990/OtherRevenueMiscGrp/Desc | 1 | OTHER SOURCES |
| IRS990/OtherRevenueMiscGrp/Desc | 2 | CHNG IN VAL OF BENEFICIAL INT |
| IRS990/OtherRevenueMiscGrp/RelatedOrExemptFuncIncomeAmt | 0 | 4399662 |
| IRS990/OtherRevenueMiscGrp/RelatedOrExemptFuncIncomeAmt | 1 | 896248 |
| IRS990/OtherRevenueMiscGrp/RelatedOrExemptFuncIncomeAmt | 2 | -100802 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 0 | 4399662 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 1 | 896248 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 2 | -100802 |
| IRS990/OtherRevenueTotalAmt | 0 | 5195108 |
| IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt | 0 | 9149831 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 9149831 |
| IRS990/OtherWebsiteInd | 0 | X |
| IRS990/OthNotesLoansReceivableNetGrp/BOYAmt | 0 | 837444 |
| IRS990/OthNotesLoansReceivableNetGrp/EOYAmt | 0 | 837491 |
| IRS990/PartialLiquidationInd | 0 | false |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | false |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 675803 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 675803 |
| IRS990/PledgesAndGrantsReceivableGrp/BOYAmt | 0 | 96397 |
| IRS990/PledgesAndGrantsReceivableGrp/EOYAmt | 0 | 7823 |
| IRS990/PoliticalCampaignActyInd | 0 | false |
| IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt | 0 | 297652 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 560084 |
| IRS990/PrincipalOfficerNm | 0 | JOHN PULLO |