| Assets (liabilities) of benefit plan | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Net assets available for benefits at beginning of period | en | http://www.xbrl.org/2003/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| Net assets available for benefits at end of period | en | http://www.xbrl.org/2003/role/periodEndLabel | http://www.xbrl.org/2003/role/link |
| The amount of assets of a retirement benefit plan less liabilities other than the actuarial present value of promised retirement benefits. | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Activele (datoriile) planului de pensii | ro | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Cuantumul activelor unui plan de pensii din care se scad datoriile, altele decât valoarea actualizată actuarială a pensiilor promise. | ro | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Active nete disponibile pentru beneficii la începutul perioadei | ro | http://www.xbrl.org/2003/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| Active nete disponibile pentru beneficii la finalul perioadei | ro | http://www.xbrl.org/2003/role/periodEndLabel | http://www.xbrl.org/2003/role/link |