| Employee benefits expense | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Employee benefits expense | en | http://www.xbrl.org/2009/role/negatedLabel | http://www.xbrl.org/2003/role/link |
| Total employee benefits expense | en | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| The expense of all forms of consideration given by an entity in exchange for a service rendered by employees or for the termination of employment. | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |