v3.25.4
Revenue and entity-wide disclosures - Disclosure of Revenue by Country (Details) - CHF (SFr)
SFr in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total Revenues SFr 0 SFr 4,970 SFr 7,038
Revenues Switzerland      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Total Revenues SFr 0 SFr 4,970 SFr 7,038