| De betaalde overige lasten. | nl | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Sonstige geleistete Aufwendungen | de | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Paid other expenses | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Autres coûts payés | fr | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Betaalde overige lasten | nl | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Sonstige geleistete Aufwendungen | de | http://www.xbrl.org/2009/role/negatedLabel | http://www.xbrl.org/2003/role/link |
| Paid other expenses | en | http://www.xbrl.org/2009/role/negatedLabel | http://www.xbrl.org/2003/role/link |
| Autres coûts payés | fr | http://www.xbrl.org/2009/role/negatedLabel | http://www.xbrl.org/2003/role/link |
| Betaalde overige lasten | nl | http://www.xbrl.org/2009/role/negatedLabel | http://www.xbrl.org/2003/role/link |