Share-based compensation, Weighted Average Grant date Fair Value and Assumptions (Details) |
12 Months Ended | |||||
|---|---|---|---|---|---|---|
|
Dec. 31, 2025
USD ($)
Y
$ / shares
|
Dec. 31, 2024
USD ($)
Y
$ / shares
|
Dec. 31, 2023
USD ($)
Y
$ / shares
|
Dec. 31, 2025
CHF (SFr)
|
Dec. 31, 2024
CHF (SFr)
|
Dec. 31, 2023
CHF (SFr)
|
|
| Number and weighted average exercise prices of options under the share option programs [Abstract] | ||||||
| Weighted average fair value at measurement date, share options granted | $ 1.69 | $ 3.68 | $ 1.57 | SFr 1.47 | SFr 3.13 | SFr 1.33 |
| Weighted average assumptions | ||||||
| Share price (USD and weighted average) | $ 2.4 | $ 3.99 | $ 2.08 | |||
| Dividend yield | 0.00% | 0.00% | 0.00% | |||
| Minimum | ||||||
| Weighted average assumptions | ||||||
| Exercise price (USD) | $ 1.84 | $ 3.39 | $ 2.03 | |||
| Risk free interest rate | 4.20% | 3.70% | 4.00% | |||
| Expected volatility | 56.00% | 82.00% | 72.00% | |||
| Expected term (in years) | Y | 6.25 | 5.5 | 5.5 | |||
| Maximum | ||||||
| Weighted average assumptions | ||||||
| Exercise price (USD) | $ 2.91 | $ 4.23 | $ 3.11 | |||
| Risk free interest rate | 4.50% | 4.20% | 4.60% | |||
| Expected volatility | 85.00% | 107.00% | 86.00% | |||
| Expected term (in years) | Y | 8.25 | 6 | 6 | |||