| r0.c0 | Advances received, specification total/Advances received | ocw-i:AdvancesReceivedPeriodicPayments | nl-types:monetaryNoDecimalsItemType | instant | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | ocw-dm:LiabilitiesCurrentSpecificationComponentMember | * | N/A |
| r0.c1 | Advances received, specification total/Advances received | ocw-i:AdvancesReceivedPeriodicPayments | nl-types:monetaryNoDecimalsItemType | instant | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | ocw-dm:LiabilitiesCurrentSpecificationComponentMember | * | N/A |
| r0.c2 | Advances received, specification total/Current | | | | N/A | N/A | N/A | * | xs:date('2018-12-31') |
| r0.c3 | Advances received, specification total/Previous | | | | N/A | N/A | N/A | * | xs:date('2017-12-31') |
| r1.c0 | ocw-table_NotesLiabilitiesCurrentAdvancesReceivedPeriodicPaymentsSpecification-y/Advances received | ocw-i:AdvancesReceivedPeriodicPayments | nl-types:monetaryNoDecimalsItemType | instant | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | ocw-dm:LiabilitiesCurrentSpecificationComponentMember | * | N/A |
| r1.c1 | ocw-table_NotesLiabilitiesCurrentAdvancesReceivedPeriodicPaymentsSpecification-y/Advances received | ocw-i:AdvancesReceivedPeriodicPayments | nl-types:monetaryNoDecimalsItemType | instant | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | ocw-dm:LiabilitiesCurrentSpecificationComponentMember | * | N/A |
| r1.c2 | ocw-table_NotesLiabilitiesCurrentAdvancesReceivedPeriodicPaymentsSpecification-y/Current | | | | N/A | N/A | N/A | * | xs:date('2018-12-31') |
| r1.c3 | ocw-table_NotesLiabilitiesCurrentAdvancesReceivedPeriodicPaymentsSpecification-y/Previous | | | | N/A | N/A | N/A | * | xs:date('2017-12-31') |