| Total assets | 316.2M | 326.9M | 317.8M | 319.9M | 
                
                        | Current assets | 100.6M | 120.0M | 148.6M | 148.2M | 
                
                        | Cash | 73.2M | 86.0M | 101.1M | 115.6M | 
                
                        | Cash equivalents | — | -5.0M | -15.8M | -20.4M | 
                
                        | Cash and cash equivalents | 73.2M | 81.1M | 85.3M | 95.3M | 
                
                        | Other short term investments | — | 5.6M | 27.2M | 17.6M | 
                
                        | Accounts receivable | 7.1M | 12.3M | 12.4M | 9.6M | 
                
                        | Other receivables | — | — | — | — | 
                
                        | Inventory | 16.7M | 17.1M | 19.1M | 20.4M | 
                
                        | Prepaid assets | 3.7M | 4.0M | 4.6M | 5.2M | 
                
                        | Restricted cash | — | — | — | — | 
                
                        | Assets held for sale | — | — | — | — | 
                
                        | Hedging assets | — | — | — | — | 
                
                        | Other current assets | — | — | — | — | 
                
                        | Non current assets | 215.6M | 206.9M | 169.1M | 171.7M | 
                
                        | Properties | 9.0M | 3.3M | 3.0M | 2.8M | 
                
                        | Land and improvements | — | — | — | — | 
                
                        | Machinery furniture equipment | 19.6M | 19.1M | 17.4M | 15.5M | 
                
                        | Construction in progress | 21.7M | 14.9M | 2.5M | 34.8M | 
                
                        | Leases | — | — | — | — | 
                
                        | Accumulated depreciation | -18.8M | -16.1M | -12.1M | -9.8M | 
                
                        | Goodwill | 88.8M | 90.9M | 74.6M | 74.2M | 
                
                        | Investment properties | — | — | — | 0 | 
                
                        | Financial assets | — | — | — | — | 
                
                        | Intangible assets | 76.2M | 78.3M | 62.1M | 61.9M | 
                
                        | Investments and advances | — | — | — | — | 
                
                        | Other non current assets | 935.7K | 2.8M | — | 2.5M | 
                
                        | Total liabilities | 74.7M | 78.3M | 52.6M | 47.6M | 
                
                        | Current liabilities | 56.3M | 53.8M | 21.2M | 18.5M | 
                
                        | Accounts payable | 28.7M | 42.5M | 17.1M | 16.5M | 
                
                        | Accrued expenses | — | — | — | — | 
                
                        | Short term debt | 27.6M | 11.2M | 4.0M | 2.0M | 
                
                        | Deferred revenue | — | — | — | — | 
                
                        | Tax payable | 0 | 154.3K | — | 0 | 
                
                        | Pensions | — | — | — | — | 
                
                        | Other current liabilities | — | — | — | — | 
                
                        | Non current liabilities | 18.4M | 24.5M | 31.4M | 29.2M | 
                
                        | Long term provisions | — | — | — | — | 
                
                        | Long term debt | 11.5M | 19.6M | 26.7M | 24.5M | 
                
                        | Provision for risks and charges | 2.7M | 282.0K | 687.8K | 657.3K | 
                
                        | Deferred liabilities | 1.8M | 2.0M | 2.5M | 2.4M | 
                
                        | Derivative product liabilities | — | — | — | — | 
                
                        | Other non current liabilities | — | — | — | — | 
                
                        | Shareholders equity |  |  |  |  | 
                
                        | Common stock | 57.4K | 57.3K | 58.2K | 57.3K | 
                
                        | Retained earnings | -532.8M | -526.6M | -507.8M | -491.5M | 
                
                        | Other shareholders equity | — | — | — | — | 
                
                        | Total shareholders equity | 241.5M | 248.6M | 265.2M | 272.3M | 
                
                        | Additional paid in capital | 768.3M | 768.7M | 772.5M | 761.3M | 
                
                        | Treasury stock | 3.9M | 5.2M | 9.2M | 6.4M | 
                
                        | Minority interest | 2.1M | 2.0M | -4.6K | -3.4K |