| 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 |
| Pensionihüvitiste plaani varad (kohustised) | et | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Pensionihüvitiste plaani varad, millest lahutatakse muud kohustised kui lubatud pensionihüvitiste aktuaarne nüüdisväärtus. | et | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Hüvitisteks olemasolev netovara perioodi alguses | et | http://www.xbrl.org/2003/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| Hüvitisteks olemasolev netovara perioodi lõpus | et | http://www.xbrl.org/2003/role/periodEndLabel | http://www.xbrl.org/2003/role/link |