| 
                Total assets
             | 
                        
                2.1B
             | 
                        
                2.3B
             | 
                        
                1.6B
             | 
                        
                486.7M
             | 
                    
                
                        | 
                Current assets
             | 
                        
                1.8B
             | 
                        
                2.2B
             | 
                        
                1.6B
             | 
                        
                467.3M
             | 
                    
                
                        | 
                Cash
             | 
                        
                10.5M
             | 
                        
                94.6M
             | 
                        
                100.4M
             | 
                        
                35.0M
             | 
                    
                
                        | 
                Cash equivalents
             | 
                        
                0
             | 
                        
                0
             | 
                        
                91K
             | 
                        
                0
             | 
                    
                
                        | 
                Cash and cash equivalents
             | 
                        
                10.5M
             | 
                        
                94.6M
             | 
                        
                100.5M
             | 
                        
                35.0M
             | 
                    
                
                        | 
                Other short term investments
             | 
                        
                1.8M
             | 
                        
                118.2M
             | 
                        
                11.5M
             | 
                        
                35.0M
             | 
                    
                
                        | 
                Accounts receivable
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                0
             | 
                    
                
                        | 
                Other receivables
             | 
                        
                1.8B
             | 
                        
                1.9B
             | 
                        
                1.4B
             | 
                        
                424.1M
             | 
                    
                
                        | 
                Inventory
             | 
                        
                —
             | 
                        
                0
             | 
                        
                244K
             | 
                        
                333K
             | 
                    
                
                        | 
                Prepaid assets
             | 
                        
                789K
             | 
                        
                22.1M
             | 
                        
                13.7M
             | 
                        
                6.0M
             | 
                    
                
                        | 
                Restricted cash
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Assets held for sale
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Hedging assets
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Other current assets
             | 
                        
                2.5M
             | 
                        
                —
             | 
                        
                —
             | 
                        
                1M
             | 
                    
                
                        | 
                Non current assets
             | 
                        
                311.1M
             | 
                        
                94.2M
             | 
                        
                39.0M
             | 
                        
                19.5M
             | 
                    
                
                        | 
                Properties
             | 
                        
                1.1M
             | 
                        
                985K
             | 
                        
                899K
             | 
                        
                722K
             | 
                    
                
                        | 
                Land and improvements
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Machinery furniture equipment
             | 
                        
                1.8M
             | 
                        
                1.8M
             | 
                        
                1.8M
             | 
                        
                1.7M
             | 
                    
                
                        | 
                Construction in progress
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Leases
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Accumulated depreciation
             | 
                        
                -11.8M
             | 
                        
                -2.1M
             | 
                        
                -1.7M
             | 
                        
                -1.4M
             | 
                    
                
                        | 
                Goodwill
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Investment properties
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Financial assets
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Intangible assets
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Investments and advances
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Other non current assets
             | 
                        
                —
             | 
                        
                —
             | 
                        
                11.5M
             | 
                        
                —
             | 
                    
                
                        | 
                Total liabilities
             | 
                        
                1.4B
             | 
                        
                1.7B
             | 
                        
                1.2B
             | 
                        
                170.7M
             | 
                    
                
                        | 
                Current liabilities
             | 
                        
                33.4M
             | 
                        
                55.5M
             | 
                        
                16.7M
             | 
                        
                9.7M
             | 
                    
                
                        | 
                Accounts payable
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Accrued expenses
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Short term debt
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Deferred revenue
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Tax payable
             | 
                        
                16.9M
             | 
                        
                35.6M
             | 
                        
                12.1M
             | 
                        
                6.6M
             | 
                    
                
                        | 
                Pensions
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Other current liabilities
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Non current liabilities
             | 
                        
                1.4B
             | 
                        
                1.7B
             | 
                        
                1.2B
             | 
                        
                161.0M
             | 
                    
                
                        | 
                Long term provisions
             | 
                        
                31.9M
             | 
                        
                18.8M
             | 
                        
                8.0M
             | 
                        
                1.6M
             | 
                    
                
                        | 
                Long term debt
             | 
                        
                1.3B
             | 
                        
                1.7B
             | 
                        
                1.2B
             | 
                        
                158.8M
             | 
                    
                
                        | 
                Provision for risks and charges
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Deferred liabilities
             | 
                        
                0
             | 
                        
                329K
             | 
                        
                417K
             | 
                        
                148K
             | 
                    
                
                        | 
                Derivative product liabilities
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Other non current liabilities
             | 
                        
                20K
             | 
                        
                —
             | 
                        
                -1K
             | 
                        
                —
             | 
                    
                
                        | 
                Shareholders equity
             | 
                        
                
             | 
                        
                
             | 
                        
                
             | 
                        
                
             | 
                    
                
                        | 
                Common stock
             | 
                        
                64.4M
             | 
                        
                61.0M
             | 
                        
                61.0M
             | 
                        
                61.0M
             | 
                    
                
                        | 
                Retained earnings
             | 
                        
                170.3M
             | 
                        
                154.5M
             | 
                        
                76.9M
             | 
                        
                56.9M
             | 
                    
                
                        | 
                Other shareholders equity
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Total shareholders equity
             | 
                        
                698.4M
             | 
                        
                550.5M
             | 
                        
                385.3M
             | 
                        
                316.0M
             | 
                    
                
                        | 
                Additional paid in capital
             | 
                        
                347.6M
             | 
                        
                181M
             | 
                        
                181M
             | 
                        
                181M
             | 
                    
                
                        | 
                Treasury stock
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Minority interest
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             |