| IRS990EZ/ActivitiesNotPreviouslyRptInd | 0 | 0 |
| IRS990EZ/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | MELANIE HOK |
| IRS990EZ/BooksInCareOfDetail/PhoneNum | 0 | 2122811248 |
| IRS990EZ/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 1767 PARK AVENUE 4TH FLOOR |
| IRS990EZ/BooksInCareOfDetail/USAddress/CityNm | 0 | NEW YORK |
| IRS990EZ/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | NY |
| IRS990EZ/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 10035 |
| IRS990EZ/CashSavingsAndInvestmentsGrp/BOYAmt | 0 | 3740505 |
| IRS990EZ/CashSavingsAndInvestmentsGrp/EOYAmt | 0 | 0 |
| IRS990EZ/ChgMadeToOrgnzngDocNotRptInd | 0 | 0 |
| IRS990EZ/DirectIndirectPltclExpendAmt | 0 | 0 |
| IRS990EZ/DonorAdvisedFndsInd | 0 | 0 |
| IRS990EZ/EngagedInExcessBenefitTransInd | 0 | 0 |
| IRS990EZ/ExcessOrDeficitForYearAmt | 0 | 0 |
| IRS990EZ/FiledScheduleAInd | 0 | 1 |
| IRS990EZ/FinalReturnInd | 0 | X |
| IRS990EZ/ForeignFinancialAccountInd | 0 | 0 |
| IRS990EZ/ForeignOfficeInd | 0 | 0 |
| IRS990EZ/Form990TotalAssetsGrp/BOYAmt | 0 | 7934213 |
| IRS990EZ/Form990TotalAssetsGrp/EOYAmt | 0 | 0 |
| IRS990EZ/GrossReceiptsAmt | 0 | 0 |
| IRS990EZ/InfoInScheduleOPartIIIInd | 0 | X |
| IRS990EZ/InfoInScheduleOPartIIInd | 0 | X |
| IRS990EZ/InfoInScheduleOPartIInd | 0 | X |
| IRS990EZ/InfoInScheduleOPartIVInd | 0 | X |
| IRS990EZ/InfoInScheduleOPartVInd | 0 | X |
| IRS990EZ/LobbyingActivitiesInd | 0 | 0 |
| IRS990EZ/MadeLoansToFromOfficersInd | 0 | 0 |
| IRS990EZ/MethodOfAccountingAccrualInd | 0 | X |
| IRS990EZ/NetAssetsOrFundBalancesBOYAmt | 0 | 5438703 |
| IRS990EZ/NetAssetsOrFundBalancesEOYAmt | 0 | 0 |
| IRS990EZ/NetAssetsOrFundBalancesGrp/BOYAmt | 0 | 5438703 |
| IRS990EZ/NetAssetsOrFundBalancesGrp/EOYAmt | 0 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 0 | 0.20 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 1 | 0.10 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 2 | 0.10 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 3 | 0.10 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 4 | 0.10 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 5 | 0.10 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 6 | 0.10 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 7 | 0.10 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 8 | 0.10 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 9 | 0.10 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 10 | 0.10 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 11 | 0.10 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 0 | 0 |
| 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/CompensationAmt | 6 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 7 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 8 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 9 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 10 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 11 | 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 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt | 6 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt | 7 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt | 8 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt | 9 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt | 10 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt | 11 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt | 0 | 0 |
| 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/ExpenseAccountOtherAllwncAmt | 6 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt | 7 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt | 8 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt | 9 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt | 10 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt | 11 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 0 | DOUGLAS SNYDER |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 1 | JAKE FOLEY |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 2 | ROGER BERG |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 3 | COLIN BEIRNE |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 4 | JAMAL EPPS |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 5 | TREVOR GIBBONS |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 6 | PRESTON HENSKE |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 7 | TOM KEARNEY |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 8 | ANTHONY MANLEY |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 9 | KATHRYN DUFFY STANTON |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 10 | KELLIE ZESCH |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 11 | GREG SPREEMAN |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 0 | BOARD CHAIR |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 1 | VICE CHAIR |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 2 | SECRETARY |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 3 | TREASURER |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 4 | TRUSTEE |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 5 | TRUSTEE |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 6 | TRUSTEE |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 7 | TRUSTEE |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 8 | TRUSTEE |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 9 | TRUSTEE |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 10 | TRUSTEE |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 11 | CHIEF FINANCIAL OFFICER |
| IRS990EZ/OperateHospitalInd | 0 | 0 |
| IRS990EZ/Organization501c3Ind | 0 | X |
| IRS990EZ/OrganizationDissolvedEtcInd | 0 | 1 |
| IRS990EZ/OrganizationHadUBIInd | 0 | 0 |
| IRS990EZ/OtherAssetsTotalDetail/BOYAmt | 0 | 4193708 |
| IRS990EZ/OtherAssetsTotalDetail/EOYAmt | 0 | 0 |
| IRS990EZ/OtherChangesInNetAssetsAmt | 0 | -5438703 |
| IRS990EZ/PartVIHghstPdCntrctProfSrvcTxt | 0 | NONE |
| IRS990EZ/PartVIOfCompOfHghstPdEmplTxt | 0 | NONE |
| IRS990EZ/PoliticalCampaignActyInd | 0 | 0 |
| IRS990EZ/PrimaryExemptPurposeTxt | 0 | THE SCHOOL OFFERS CLASSROOM INSTRUCTION AND PROGRAMS THAT ENCOURAGE AND FOSTER CREATIVITY AND TEAM PLANNING WHILE MEETING THE NEW YORK STATE EDUCATIONAL STANDARDS. |
| IRS990EZ/ProgramSrvcAccomplishmentGrp/DescriptionProgramSrvcAccomTxt | 0 | EFFECTIVE JULY 1, 2017, DEMOCRACY PREPARATORY CHARTER SCHOOL (DPCS), DEMOCRACY PREPARATORY HARLEM CHARTER SCHOOL (DPH) AND HARLEM PREPARATORY CHARTER SCHOOL (HPCS) MERGED INTO A SINGLE LEGAL ENTITY UNDER BRONX PREPARATORY CHARTER SCHOOL (BPCS). BPCS WAS RENAMED DEMOCRACY PREP NEW YORK CHARTER SCHOOLS ALSO EFFECTIVE JULY 1, 2017. DPCS, DPH AND HPCS WERE DISSOLVED AND CEASED TO EXIST AS LEGAL ENTITIES IN CONJUNCTION WITH THE MERGER. THE PLAN OF MERGER WAS APPROVED BY THE NEW YORK STATE BOARD OF REGENTS ON APRIL 4, 2017. |
| IRS990EZ/ProgramSrvcAccomplishmentGrp/GrantsAndAllocationsAmt | 0 | 0 |
| IRS990EZ/ProgramSrvcAccomplishmentGrp/ProgramServiceExpensesAmt | 0 | 0 |
| IRS990EZ/ProhibitedTaxShelterTransInd | 0 | 0 |
| IRS990EZ/RelatedOrganizationCtrlEntInd | 0 | 0 |
| IRS990EZ/ScheduleBNotRequiredInd | 0 | X |
| IRS990EZ/SchoolOperatingInd | 0 | 1 |
| IRS990EZ/SubjectToProxyTaxInd | 0 | 0 |
| IRS990EZ/SumOfTotalLiabilitiesGrp/BOYAmt | 0 | 2495510 |
| IRS990EZ/SumOfTotalLiabilitiesGrp/EOYAmt | 0 | 0 |
| IRS990EZ/TanningServicesProvidedInd | 0 | 0 |
| IRS990EZ/TaxImposedOnOrganizationMgrAmt | 0 | 0 |
| IRS990EZ/TaxImposedUnderIRC4911Amt | 0 | 0 |
| IRS990EZ/TaxImposedUnderIRC4912Amt | 0 | 0 |
| IRS990EZ/TaxImposedUnderIRC4955Amt | 0 | 0 |
| IRS990EZ/TaxReimbursedByOrganizationAmt | 0 | 0 |
| IRS990EZ/TotalExpensesAmt | 0 | 0 |
| IRS990EZ/TotalProgramServiceExpensesAmt | 0 | 0 |
| IRS990EZ/TotalRevenueAmt | 0 | 0 |
| IRS990EZ/TrnsfrExmptNonChrtblRltdOrgInd | 0 | 0 |
| IRS990EZ/TypeOfOrganizationCorpInd | 0 | X |
| IRS990EZ/WebsiteAddressTxt | 0 | WWW.DEMOCRACYPREP.ORG |
| IRS990ScheduleA/SchoolInd | 0 | X |
| IRS990ScheduleE/ComplianceWithRevProc7550Ind | 0 | 1 |
| IRS990ScheduleE/DiscriminateRaceAdmissPlcyInd | 0 | 0 |
| IRS990ScheduleE/DiscriminateRaceAthltProgInd | 0 | 0 |
| IRS990ScheduleE/DiscriminateRaceEducPlcyInd | 0 | 0 |
| IRS990ScheduleE/DiscriminateRaceEmplmFcultyInd | 0 | 0 |
| IRS990ScheduleE/DiscriminateRaceOtherActyInd | 0 | 0 |
| IRS990ScheduleE/DiscriminateRaceSchsInd | 0 | 0 |
| IRS990ScheduleE/DiscriminateRaceStdntsRghtsInd | 0 | 0 |
| IRS990ScheduleE/DiscriminateRaceUseOfFcltsInd | 0 | 0 |
| IRS990ScheduleE/GovernmentFinancialAidRcvdInd | 0 | 0 |
| IRS990ScheduleE/GovernmentFinancialAidRvkdInd | 0 | 0 |
| IRS990ScheduleE/MaintainCpyOfAllSolInd | 0 | 1 |
| IRS990ScheduleE/MaintainCpyOfBrochuresEtcInd | 0 | 1 |
| IRS990ScheduleE/MaintainRacialCompRecsInd | 0 | 1 |
| IRS990ScheduleE/MaintainScholarshipsRecsInd | 0 | 1 |
| IRS990ScheduleE/NondiscriminatoryPolicyStmtInd | 0 | 1 |
| IRS990ScheduleE/PlcyPblczdViaBroadcastMediaInd | 0 | 0 |
| IRS990ScheduleE/PolicyStmtInBrochuresEtcInd | 0 | 1 |
| IRS990ScheduleE/SupplementalInformationDetail/ExplanationTxt | 0 | AS A PUBLIC SCHOOL, SUBJECT TO OPEN ENROLLMENT, THE CHARTER SCHOOL IS NOT SUBJECT TO THE SPECIFIC GUIDELINES SET FORTH IN REV. PROV. 75-50. |
| IRS990ScheduleE/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | SCHEDULE E, PART I, LINE 3 |
| IRS990ScheduleN/AssetsDistributedInd | 0 | 1 |
| IRS990ScheduleN/AttorneyGeneralNotifiedInd | 0 | 1 |
| IRS990ScheduleN/BondsOutstandingInd | 0 | 0 |
| IRS990ScheduleN/DirectorOfSuccessorInd | 0 | 1 |
| IRS990ScheduleN/EmployeeOfSuccessorInd | 0 | 0 |
| IRS990ScheduleN/LiabilitiesPaidInd | 0 | 1 |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/AssetsDistriOrExpnssPaidDesc | 0 | CASH |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/AssetsDistriOrExpnssPaidDesc | 1 | PLEDGES AND GRANTS RECEIVABLES |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/AssetsDistriOrExpnssPaidDesc | 2 | PREPAID EXPENSES AND DEFERRED CHARGES |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/AssetsDistriOrExpnssPaidDesc | 3 | SECURITY DEPOSITS AND RETAINERS |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/AssetsDistriOrExpnssPaidDesc | 4 | LEASEHOLD IMPROVEMENTS |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/AssetsDistriOrExpnssPaidDesc | 5 | EQUIPMENT |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/AssetsDistriOrExpnssPaidDesc | 6 | OTHER FIXED ASSETS |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/BusinessName/BusinessNameLine1Txt | 0 | DEMOCRACY PREP NEW YORK CHARTER SCHOOLS |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/BusinessName/BusinessNameLine1Txt | 1 | DEMOCRACY PREP NEW YORK CHARTER SCHOOLS |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/BusinessName/BusinessNameLine1Txt | 2 | DEMOCRACY PREP NEW YORK CHARTER SCHOOLS |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/BusinessName/BusinessNameLine1Txt | 3 | DEMOCRACY PREP NEW YORK CHARTER SCHOOLS |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/BusinessName/BusinessNameLine1Txt | 4 | DEMOCRACY PREP NEW YORK CHARTER SCHOOLS |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/BusinessName/BusinessNameLine1Txt | 5 | DEMOCRACY PREP NEW YORK CHARTER SCHOOLS |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/BusinessName/BusinessNameLine1Txt | 6 | DEMOCRACY PREP NEW YORK CHARTER SCHOOLS |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/DistributionDt | 0 | 2017-07-01 |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/DistributionDt | 1 | 2017-07-01 |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/DistributionDt | 2 | 2017-07-01 |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/DistributionDt | 3 | 2017-07-01 |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/DistributionDt | 4 | 2017-07-01 |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/DistributionDt | 5 | 2017-07-01 |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/DistributionDt | 6 | 2017-07-01 |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/EIN | 0 | 061581474 |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/EIN | 1 | 061581474 |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/EIN | 2 | 061581474 |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/EIN | 3 | 061581474 |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/EIN | 4 | 061581474 |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/EIN | 5 | 061581474 |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/EIN | 6 | 061581474 |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/FairMarketValueOfAssetAmt | 0 | 3816053 |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/FairMarketValueOfAssetAmt | 1 | 916490 |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/FairMarketValueOfAssetAmt | 2 | 88311 |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/FairMarketValueOfAssetAmt | 3 | 62855 |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/FairMarketValueOfAssetAmt | 4 | 1312118 |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/FairMarketValueOfAssetAmt | 5 | 628602 |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/FairMarketValueOfAssetAmt | 6 | 1109784 |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/IRCSectionTxt | 0 | 501(C)(3) |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/IRCSectionTxt | 1 | 501(C)(3) |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/IRCSectionTxt | 2 | 501(C)(3) |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/IRCSectionTxt | 3 | 501(C)(3) |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/IRCSectionTxt | 4 | 501(C)(3) |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/IRCSectionTxt | 5 | 501(C)(3) |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/IRCSectionTxt | 6 | 501(C)(3) |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/MethodOfFMVDeterminationTxt | 0 | ACTUAL CASH VALUE |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/MethodOfFMVDeterminationTxt | 1 | BOOK VALUE |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/MethodOfFMVDeterminationTxt | 2 | BOOK VALUE |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/MethodOfFMVDeterminationTxt | 3 | ACTUAL COST |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/MethodOfFMVDeterminationTxt | 4 | BOOK VALUE |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/MethodOfFMVDeterminationTxt | 5 | BOOK VALUE |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/MethodOfFMVDeterminationTxt | 6 | BOOK VALUE |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/USAddress/AddressLine1Txt | 0 | 1767 PARK AVENUE |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/USAddress/AddressLine1Txt | 1 | 1767 PARK AVENUE |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/USAddress/AddressLine1Txt | 2 | 1767 PARK AVENUE |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/USAddress/AddressLine1Txt | 3 | 1767 PARK AVENUE |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/USAddress/AddressLine1Txt | 4 | 1767 PARK AVENUE |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/USAddress/AddressLine1Txt | 5 | 1767 PARK AVENUE |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/USAddress/AddressLine1Txt | 6 | 1767 PARK AVENUE |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/USAddress/CityNm | 0 | NEW YORK |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/USAddress/CityNm | 1 | NEW YORK |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/USAddress/CityNm | 2 | NEW YORK |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/USAddress/CityNm | 3 | NEW YORK |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/USAddress/CityNm | 4 | NEW YORK |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/USAddress/CityNm | 5 | NEW YORK |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/USAddress/CityNm | 6 | NEW YORK |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/USAddress/StateAbbreviationCd | 0 | NY |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/USAddress/StateAbbreviationCd | 1 | NY |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/USAddress/StateAbbreviationCd | 2 | NY |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/USAddress/StateAbbreviationCd | 3 | NY |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/USAddress/StateAbbreviationCd | 4 | NY |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/USAddress/StateAbbreviationCd | 5 | NY |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/USAddress/StateAbbreviationCd | 6 | NY |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/USAddress/ZIPCd | 0 | 10035 |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/USAddress/ZIPCd | 1 | 10035 |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/USAddress/ZIPCd | 2 | 10035 |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/USAddress/ZIPCd | 3 | 10035 |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/USAddress/ZIPCd | 4 | 10035 |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/USAddress/ZIPCd | 5 | 10035 |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/USAddress/ZIPCd | 6 | 10035 |
| IRS990ScheduleN/OwnerOfSuccessorInd | 0 | 0 |
| IRS990ScheduleN/ReceiveCompensationInd | 0 | 0 |
| IRS990ScheduleN/RequiredToNotifyAGInd | 0 | 1 |
| IRS990ScheduleN/SupplementalInformationDetail/ExplanationTxt | 0 | PERSON(S) INVOLVED: ROGER BERG, DOUGLAS SNYDER, AND KATHRYN DUFFY STANTON |
| IRS990ScheduleN/SupplementalInformationDetail/ExplanationTxt | 1 | EXPLANATION OF INVOLVEMENT: PURSUANT TO A PLAN OF MERGER APPROVED BY THE BOARD OF TRUSTEES, THE NEW YORK STATE BOARD OF REGENTS, THE CHARTER SCHOOLS INSTITUTE OF THE STATE UNIVERSITY OF NEW YORK, AND THE NEW YORK CITY DEPARTMENT OF EDUCATION, THE ORGANIZATION TRANSFERRED ITS NET ASSETS TO DEMOCRACY PREP NEW YORK CHARTER SCHOOLS (FORMERLY KNOWN AS BRONX PREPARATORY CHARTER SCHOOL).ROGER BERG BECAME SECRETARY OF THE TRANSFEREE ORGANIZATION.DOUGLAS SNYDER BECAME A TRUSTEE OF THE TRANSFEREE ORGANIZATION.KATHRYN DUFFY STANTON BECAME A TRUSTEE OF THE TRANSFEREE ORGANIZATION.PART I:ALL LIABILITIES OF HARLEM PREP CHARTER SCHOOL WERE ASSUMED BY DEMOCRACY PREP NEW YORK CHARTER SCHOOLS. THESE INCLUDED:ACCOUNTS PAYABLE AND ACCRUED EXPENSES - $1,220,022DEFERRED REVENUE- $701UNSECURED NOTES AND LOANS PAYABLE TO UNRELATED THIRD PARTIES- $388,606DEFERRED RENT- $712,535DUE TO AFFILIATES- $173,646 |
| IRS990ScheduleN/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | PART I, LINE 2E: |
| IRS990ScheduleN/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | PART I, LINE 2E: |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | DESCRIPTION: TRANSFER OF ASSETS TO DEMOCRACY PREP NEW YORK CHARTER SCHOOLS:. AMOUNT: -7,934,213. DESCRIPTION: LIABILITIES ASSUMED BY DEMOCRACY PREP NEW YORK CHARTER SCHOOLS:. AMOUNT: 2,495,510. TOTAL TO FORM 990-EZ, LINE 20: -5,438,703. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | DESCRIPTION: PLEDGES AND GRANTS RECEIVABLE. BEG. OF YEAR AMOUNT: 916,490. END OF YEAR AMOUNT: 0. DESCRIPTION: PREPAID EXPENSES AND DEFERRED CHARGES. BEG. OF YEAR AMOUNT: 88,311. END OF YEAR AMOUNT: 0. DESCRIPTION: RESTRICTED CASH. BEG. OF YEAR AMOUNT: 75,548. END OF YEAR AMOUNT: 0. DESCRIPTION: SECURITY DEPOSITS AND RETAINERS. BEG. OF YEAR AMOUNT: 62,855. END OF YEAR AMOUNT: 0. DESCRIPTION: OTHER DEPRECIABLE ASSETS. BEG. OF YEAR AMOUNT: 3,050,504. END OF YEAR AMOUNT: 0. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 2 | DESCRIPTION: ACCOUNTS PAYABLE AND ACCRUED EXPENSES. BEG. OF YEAR AMOUNT: 1,220,022. END OF YEAR AMOUNT: 0. DESCRIPTION: DEFERRED REVENUE. BEG. OF YEAR AMOUNT: 701. END OF YEAR AMOUNT: 0. DESCRIPTION: UNSECURED NOTES AND LOANS PAYABLE TO UNRELATED THIRD PARTIES. BEG. OF YEAR AMOUNT: 388,606. END OF YEAR AMOUNT: 0. DESCRIPTION: DEFERRED RENT. BEG. OF YEAR AMOUNT: 712,535. END OF YEAR AMOUNT: 0. DESCRIPTION: DUE TO AFFILIATES. BEG. OF YEAR AMOUNT: 173,646. END OF YEAR AMOUNT: 0. |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | FORM 990-EZ, PART I, LINE 20 - OTHER CHANGES IN NET ASSETS |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | FORM 990-EZ, PART II, LINE 24 - OTHER ASSETS |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | FORM 990-EZ, PART II, LINE 26 - OTHER LIABILITIES |
| ReasonableCauseExplanation/ExplanationTxt | 0 | LATE FILED RETURN DUE TO CCH SOFTWARE OUTAGE |
| TransferPrsnlBnftContractsDecl/DeclarationDesc | 0 | THE ORGANIZATION DID NOT, DURING THE YEAR, RECEIVE ANY FUNDS, DIRECTLY,OR INDIRECTLY, TO PAY PREMIUMS ON A PERSONAL BENEFIT CONTRACT.THE ORGANIZATION, DID NOT, DURING THE YEAR, PAY ANY PREMIUMS, DIRECTLY,OR INDIRECTLY, ON A PERSONAL BENEFIT CONTRACT. |
| ReturnHeader/BuildTS | 0 | 2019-02-21 02:37:17Z |
| ReturnHeader/BusinessOfficerGrp/DiscussWithPaidPreparerInd | 0 | 1 |
| ReturnHeader/BusinessOfficerGrp/PersonNm | 0 | DR ROBERT NORTH |
| ReturnHeader/BusinessOfficerGrp/PersonTitleTxt | 0 | BOARD CHAIR |
| ReturnHeader/BusinessOfficerGrp/PhoneNum | 0 | 2122811248 |
| ReturnHeader/BusinessOfficerGrp/SignatureDt | 0 | 2019-05-22 |
| ReturnHeader/Filer/BusinessName/BusinessNameLine1Txt | 0 | HARLEM PREP CHARTER SCHOOL |
| ReturnHeader/Filer/BusinessNameControlTxt | 0 | HARL |
| ReturnHeader/Filer/EIN | 0 | 134177265 |
| ReturnHeader/Filer/PhoneNum | 0 | 2122811248 |
| ReturnHeader/Filer/USAddress/AddressLine1Txt | 0 | 1767 PARK AVENUE 4TH FLOOR |
| ReturnHeader/Filer/USAddress/CityNm | 0 | NEW YORK |
| ReturnHeader/Filer/USAddress/StateAbbreviationCd | 0 | NY |
| ReturnHeader/Filer/USAddress/ZIPCd | 0 | 10035 |
| ReturnHeader/FilingSecurityInformation/AtSubmissionCreationDeviceId | 0 | DA39A3EE5E6B4B0D3255BFEF95601890AFD80709 |
| ReturnHeader/FilingSecurityInformation/AtSubmissionFilingDeviceId | 0 | 76A25249E5E94ADAA4B6AEE04382CED6247CFD88 |
| ReturnHeader/FilingSecurityInformation/FilingLicenseTypeCd | 0 | P |
| ReturnHeader/FilingSecurityInformation/IPAddress/IPv4AddressTxt | 0 | 4.15.211.182 |
| ReturnHeader/FilingSecurityInformation/IPDt | 0 | 2019-05-22 |
| ReturnHeader/FilingSecurityInformation/IPTimezoneCd | 0 | ED |
| ReturnHeader/FilingSecurityInformation/IPTm | 0 | 16:41:40 |
| ReturnHeader/PreparerFirmGrp/PreparerFirmEIN | 0 | 271728945 |
| ReturnHeader/PreparerFirmGrp/PreparerFirmName/BusinessNameLine1Txt | 0 | PKF O'CONNOR DAVIES LLP |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/AddressLine1Txt | 0 | 665 FIFTH AVENUE |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/CityNm | 0 | NEW YORK |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/StateAbbreviationCd | 0 | NY |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/ZIPCd | 0 | 10022 |
| ReturnHeader/PreparerPersonGrp/PhoneNum | 0 | 2122862600 |
| ReturnHeader/PreparerPersonGrp/PreparationDt | 0 | 2019-05-22 |
| ReturnHeader/PreparerPersonGrp/PreparerPersonNm | 0 | GARRETT M HIGGINS |
| ReturnHeader/ReturnTs | 0 | 2019-05-22T16:46:50-05:00 |
| ReturnHeader/ReturnTypeCd | 0 | 990EZ |
| ReturnHeader/TaxPeriodBeginDt | 0 | 2017-07-01 |
| ReturnHeader/TaxPeriodEndDt | 0 | 2017-07-01 |
| ReturnHeader/TaxYr | 0 | 2017 |