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| | concept | jenv-bw2-i:AssetsCurrentDisclosure | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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| | concept | jenv-bw2-i:InventoriesDisclosure | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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| | concept | jenv-bw2-i:InventoryRawMaterialsConsumablesDisclosure | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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| | concept | jenv-bw2-i:PrepaymentsInventoriesDisclosure | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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| | concept | kvk-abstr:InventoriesDisclosureTitle | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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| | concept | jenv-bw2-i:ReceivablesDisclosure | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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| | concept | jenv-bw2-i:TradeReceivablesDisclosure | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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| | concept | ocw-i:ReceivablesOCWAndEZCurrentDisclosure | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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| | concept | ocw-i:ReceivablesLocalGovernmentCommonRegulationsCurrentDisclosure | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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| | concept | jenv-bw2-i:ReceivablesGroupCompaniesCurrentDisclosure | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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| | concept | ocw-i:ReceivablesOtherParticipatingInterestsCurrentDisclosure | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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| | concept | ocw-i:ReceivablesEmployeesCurrentDisclosure | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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| | concept | ocw-i:ReceivablesParentsStudentsAndCourseParticipantsCurrentDisclosure | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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| | concept | ocw-i:ReceivablesGovernmentOtherCurrentDisclosure | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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| | concept | rj-i:ConstructionContractsDisclosure | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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| | concept | jenv-bw2-i:ReceivablesOtherCurrentDisclosure | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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| | concept | ocw-i:ReceivablesProvisionBadDebtsDisclosure | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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| | concept | ocw-i:ReceivablesCurrentExcludingAccruedIncomeSubtotalDisclosure | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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| | concept | jenv-bw2-i:AccruedIncomeDisclosure | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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| | concept | ocw-i:TaxesSocialSecurityContributionsReceivableCurrentDisclosure | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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| | concept | ocw-i:AdvancesPaidPrepaymentsDisclosure | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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| | concept | ocw-i:AdvancesPaidPeriodicPaymentsDisclosure | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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| | concept | ocw-i:InterestReceivableDisclosure | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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| | concept | jenv-bw2-i:AccruedIncomeOtherDisclosure | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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| | concept | kvk-abstr:AccruedIncomeDisclosureTitle | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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| | concept | kvk-abstr:ReceivablesDisclosureTitle | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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| | concept | jenv-bw2-i:SecuritiesCurrentDisclosure | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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| | concept | ocw-i:SharesOtherVariableYieldSecuritiesCurrentDisclosure | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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| | concept | ocw-i:BondsOtherFixedIncomeSecuritiesCurrentDisclosure | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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| | concept | kvk-abstr:SecuritiesDisclosureTitle | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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| | concept | jenv-bw2-i:CashAndCashEquivalentsDisclosure | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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| | concept | ocw-i:CashDisclosure | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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| | concept | ocw-i:BankAccountsBalanceDisclosure | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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| | concept | ocw-i:DepositsDisclosure | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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| | concept | ocw-i:TreasuryBankingDisclosure | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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| | concept | kvk-abstr:CashAndCashEquivalentsDisclosureTitle | y | | jenv-bw2-dim:FinancialStatementsTypeAxis | jenv-bw2-dm:SeparateMember | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | period | xs:date('2018-01-01')/xs:date('2018-12-31') | x |
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