| Opening balance | 23,461 | 19,224 | 
| Changes recognized in profit or loss account | 2,492 | (404) | 
| - current service cost | 1,663 | 2,195 | 
| - past service cost | 468 | (2,685) | 
| - interest income or expense | 361 | 86 | 
| Remeasurement of provision (changes recognized in other comprehensive income) | (1,164) | 4,627 | 
| - actuarial profits and losses resulting from changes in demographic assumptions | (235) | 227 | 
| - actuarial profits and losses resulting from changes in financial assumptions | (1,074) | 4,400 | 
| - other | 145 | - | 
| Benefits paid | (634) | (81) | 
| Change in group composition | - | 95 | 
| Closing balance | 24,155 | 23,461 |