| in 1 000 CHF | 2020 | 2019 | 
| Group result |  44 914  |  26 207  | 
| Other comprehensive income |  |  | 
| Items that will not be reclassified to income statement |  |  | 
| Remeasurements of employee benefit obligations |  – 2 106  |  – 7 440  | 
| Deferred tax effect |  956  |  2 494  | 
| Total items that will not be reclassified to income statement |  – 1 150  |  – 4 947  | 
| Items that may be reclassified subsequently to income statement |  |  | 
| Currency translation differences |  – 25 523  |  – 24 966  | 
| Cumulative currency translation differences transferred to the income statement |  |  111  | 
| Total items that may be reclassified subsequently to income statement |  – 25 523  |  – 24 855  | 
| Total other comprehensive income after taxes |  – 26 673  |  – 29 802  | 
| Total comprehensive income |  18 241  |  – 3 595  | 
|  |  |  | 
| Attributable to: |  |  | 
| Shareholders of Arbonia AG |  18 241  |  – 3 595  | 
|  |  |  | 
| Total comprehensive income from continuing operations |  5 039  |  – 5 396  | 
| Total comprehensive income from discontinued operations |  13 202  |  1 801  |