| Deferred tax liability (asset) | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Deferred tax liability (asset) at beginning of period | en | http://www.xbrl.org/2003/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| Deferred tax liability (asset) at end of period | en | http://www.xbrl.org/2003/role/periodEndLabel | http://www.xbrl.org/2003/role/link |
| Net deferred tax liability (asset) | en | http://www.xbrl.org/2009/role/netLabel | http://www.xbrl.org/2003/role/link |
| The amount of deferred tax liabilities or assets. [Refer: Deferred tax liabilities; Deferred tax assets] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Отсрочен данъчен пасив (актив) | bg | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Размерът на отсрочените данъчни пасиви или активи. [вж. Отсрочени данъчни пасиви; Отсрочени данъчни активи] | bg | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Отсрочен данъчен пасив (актив) към началото на периода | bg | http://www.xbrl.org/2003/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| Отсрочен данъчен пасив (актив) към края на периода | bg | http://www.xbrl.org/2003/role/periodEndLabel | http://www.xbrl.org/2003/role/link |
| Нетен отсрочен данъчен пасив (актив) | bg | http://www.xbrl.org/2009/role/netLabel | http://www.xbrl.org/2003/role/link |