| De omvang van de interne lening. | nl | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Internal loan | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Interne lening | nl | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Internal loan at the end of the period | en | http://www.xbrl.org/2003/role/periodEndLabel | http://www.xbrl.org/2003/role/link |
| Interne lening aan het einde van de periode | nl | http://www.xbrl.org/2003/role/periodEndLabel | http://www.xbrl.org/2003/role/link |
| Internal loan at the beginning of the period | en | http://www.xbrl.org/2003/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| Interne lening aan het begin van de periode | nl | http://www.xbrl.org/2003/role/periodStartLabel | http://www.xbrl.org/2003/role/link |