| in TCHF | Notes | 31.12.2020 | 31.12.2019 | ||
| Assets | restated
| ||||
| Current assets | |||||
| Cash and cash equivalents | 139 739 | 35 548 | |||
| Trade receivables | 2.1 | 5 029 | 14 431 | ||
| Other current receivables | 2.2 | 38 207 | 46 898 | ||
| Net receivables from production contracts | 2.3 | 14 405 | 35 137 | ||
| Inventories | 2.4 | 24 307 | 46 795 | ||
| Prepaid expenses and accrued income | 2.5 | 1 277 | 3 857 | ||
| Total current assets | 222 964 | 75.1% | 182 666 | 68.3% | |
| Non-current assets | |||||
| Financial assets | 2.6 | 7 464 | 10 915 | ||
| Investments in associates | 2.7 | 21 699 | 27 158 | ||
| Property, plant and equipment | 2.8 | 38 062 | 32 859 | ||
| Intangible assets | 2.9 | 332 | 5 800 | ||
| Goodwill | 2.9 | 6 110 | 8 031 | ||
| Deferred tax assets | 2.14 | 176 | 109 | ||
| Total non-current assets | 73 843 | 24.9% | 84 872 | 31.7% | |
| Total assets | 296 807 | 100.0% | 267 538 | 100.0% | |
| Liabilities and equity | |||||
| Liabilities | |||||
| Current liabilities | |||||
| Financial liabilities | 2.10 | 133 | 26 186 | ||
| Trade payables | 9 372 | 17 274 | |||
| Net liabilities from production contracts | 2.3 | 1 707 | 6 774 | ||
| Customer prepayments | 2.4 | 4 562 | 7 182 | ||
| Other liabilities | 2.11 | 3 332 | 3 084 | ||
| Provisions | 2.12 | 3 959 | 11 179 | ||
| Accrued expenses and prepaid income | 2.13 | 11 237 | 21 959 | ||
| Total current liabilities | 34 302 | 11.6% | 93 638 | 35.0% | |
| Non-current liabilities | |||||
| Financial liabilities | 2.10 | – | 1 889 | ||
| Other liabilities | 2.11 | 657 | 748 | ||
| Provisions | 2.12 | 802 | 794 | ||
| Deferred tax liabilities | 2.14 | 1 274 | 1 381 | ||
| Total non-current liabilities | 2 733 | 0.9% | 4 812 | 1.8% | |
| Total liabilities | 37 035 | 12.5% | 98 450 | 36.8% | |
| Equity | |||||
| Share capital | 2.15 | 125 758 | 34 259 | ||
| Capital reserves | 1065 091 | 1001 228 | |||
| Treasury shares | 2.15 | –5 563 | –5 610 | ||
| Reserve for share-based payments | 3 470 | 4 283 | |||
| Accumulated losses | –928 984 | –865 072 | |||
| Total equity | 259 772 | 87.5% | 169 088 | 63.2% | |
| Total liabilities and equity | 296 807 | 100.0% | 267 538 | 100.0% | |