| r0.c0 | Parental contributions, specification total/Parental contributions | ocw-i:IncomeParentalContributions | nl-types:monetaryNoDecimalsItemType | duration | ocw-dm:ActualsMember | ocw-dm:OtherIncomeSpecificationComponentMember | * | N/A | venj-bw2-dm:SeparateMember |
| r0.c1 | Parental contributions, specification total/Parental contributions | ocw-i:IncomeParentalContributions | nl-types:monetaryNoDecimalsItemType | duration | ocw-dm:ActualsMember | ocw-dm:OtherIncomeSpecificationComponentMember | * | N/A | venj-bw2-dm:SeparateMember |
| r0.c2 | Parental contributions, specification total/Current | | | | N/A | N/A | * | xs:date('2017-01-01')/xs:date('2017-12-31') | N/A |
| r0.c3 | Parental contributions, specification total/Previous | | | | N/A | N/A | * | xs:date('2016-01-01')/xs:date('2016-12-31') | N/A |
| r1.c0 | ocw-table_NotesOtherIncomeParentalContributionsSpecification-y/Parental contributions | ocw-i:IncomeParentalContributions | nl-types:monetaryNoDecimalsItemType | duration | ocw-dm:ActualsMember | ocw-dm:OtherIncomeSpecificationComponentMember | * | N/A | venj-bw2-dm:SeparateMember |
| r1.c1 | ocw-table_NotesOtherIncomeParentalContributionsSpecification-y/Parental contributions | ocw-i:IncomeParentalContributions | nl-types:monetaryNoDecimalsItemType | duration | ocw-dm:ActualsMember | ocw-dm:OtherIncomeSpecificationComponentMember | * | N/A | venj-bw2-dm:SeparateMember |
| r1.c2 | ocw-table_NotesOtherIncomeParentalContributionsSpecification-y/Current | | | | N/A | N/A | * | xs:date('2017-01-01')/xs:date('2017-12-31') | N/A |
| r1.c3 | ocw-table_NotesOtherIncomeParentalContributionsSpecification-y/Previous | | | | N/A | N/A | * | xs:date('2016-01-01')/xs:date('2016-12-31') | N/A |