Consolidated statement of comprehensive income
| 
       For the period ended 31 December  | 
    
       
  | 
    
       
  | 
    
       
  | 
  
| 
       in CHF 1,000  | 
    
       Note  | 
    
       2024  | 
    
       2023  | 
  
| 
       
  | 
    
       
  | 
    
       
  | 
    
       
  | 
  
| 
       (Loss)/Profit for the period  | 
    
       
  | 
    
       –1,613  | 
    
       21,443  | 
  
| 
       
  | 
    
       
  | 
    
       
  | 
    
       
  | 
  
| 
       Other comprehensive income: Items that will not be reclassified to profit or loss in subsequent periods  | 
    
       
  | 
    
       
  | 
    
       
  | 
  
| 
       Remeasurements of post-employment benefit obligations  | 
    
       5,570  | 
    
       –1,171  | 
  |
| 
       Taxes  | 
    
       
  | 
    
       –797  | 
    
       190  | 
  
| 
       
  | 
    
       
  | 
    
       
  | 
    
       
  | 
  
| 
       Items that may be reclassified to profit or loss in subsequent periods  | 
    
       
  | 
    
       
  | 
    
       
  | 
  
| 
       Currency translation adjustments  | 
    
       
  | 
    
       24,113  | 
    
       –45,686  | 
  
| 
       Cash flow hedges  | 
    
       1,575  | 
    
       –2,177  | 
  |
| 
       Taxes  | 
    
       
  | 
    
       –242  | 
    
       364  | 
  
| 
       
  | 
    
       
  | 
    
       
  | 
    
       
  | 
  
| 
       Total other comprehensive income for the period  | 
    
       
  | 
    
       30,219  | 
    
       –48,480  | 
  
| 
       
  | 
    
       
  | 
    
       
  | 
    
       
  | 
  
| 
       Total comprehensive income for the period  | 
    
       
  | 
    
       28,606  | 
    
       –27,037  | 
  
| 
       
  | 
    
       
  | 
    
       
  | 
    
       
  | 
  
| 
       Total comprehensive income attributable to:  | 
    
       
  | 
    
       
  | 
    
       
  | 
  
| 
       – Owners of the parent  | 
    
       
  | 
    
       28,705  | 
    
       –27,053  | 
  
| 
       – Non-controlling interest  | 
    
       
  | 
    
       –99  | 
    
       16  |