| 
                Total assets
             | 
                        
                171.9M
             | 
                        
                169.8M
             | 
                        
                171.9M
             | 
                        
                170.6M
             | 
                    
                
                        | 
                Current assets
             | 
                        
                66.3M
             | 
                        
                70.3M
             | 
                        
                110.3M
             | 
                        
                77.6M
             | 
                    
                
                        | 
                Cash
             | 
                        
                685K
             | 
                        
                243K
             | 
                        
                241K
             | 
                        
                284K
             | 
                    
                
                        | 
                Cash equivalents
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Cash and cash equivalents
             | 
                        
                685K
             | 
                        
                243K
             | 
                        
                240K
             | 
                        
                284K
             | 
                    
                
                        | 
                Other short term investments
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Accounts receivable
             | 
                        
                6.1M
             | 
                        
                0
             | 
                        
                0
             | 
                        
                136K
             | 
                    
                
                        | 
                Other receivables
             | 
                        
                56.9M
             | 
                        
                66.5M
             | 
                        
                76.6M
             | 
                        
                63.4M
             | 
                    
                
                        | 
                Inventory
             | 
                        
                —
             | 
                        
                0
             | 
                        
                4.6M
             | 
                        
                4.6M
             | 
                    
                
                        | 
                Prepaid assets
             | 
                        
                1.5M
             | 
                        
                3.6M
             | 
                        
                28.9M
             | 
                        
                9.2M
             | 
                    
                
                        | 
                Restricted cash
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Assets held for sale
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Hedging assets
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Other current assets
             | 
                        
                -1K
             | 
                        
                59.2M
             | 
                        
                89.3M
             | 
                        
                54.1M
             | 
                    
                
                        | 
                Non current assets
             | 
                        
                105.6M
             | 
                        
                99.5M
             | 
                        
                61.6M
             | 
                        
                93.0M
             | 
                    
                
                        | 
                Properties
             | 
                        
                0
             | 
                        
                0
             | 
                        
                0
             | 
                        
                0
             | 
                    
                
                        | 
                Land and improvements
             | 
                        
                0
             | 
                        
                164K
             | 
                        
                164K
             | 
                        
                164K
             | 
                    
                
                        | 
                Machinery furniture equipment
             | 
                        
                76K
             | 
                        
                44K
             | 
                        
                44K
             | 
                        
                8K
             | 
                    
                
                        | 
                Construction in progress
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Leases
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Accumulated depreciation
             | 
                        
                -56K
             | 
                        
                -24K
             | 
                        
                -24K
             | 
                        
                -5K
             | 
                    
                
                        | 
                Goodwill
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Investment properties
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Financial assets
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Intangible assets
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Investments and advances
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Other non current assets
             | 
                        
                —
             | 
                        
                1K
             | 
                        
                24K
             | 
                        
                1K
             | 
                    
                
                        | 
                Total liabilities
             | 
                        
                8.2M
             | 
                        
                777K
             | 
                        
                3.8M
             | 
                        
                3.5M
             | 
                    
                
                        | 
                Current liabilities
             | 
                        
                8.2M
             | 
                        
                779K
             | 
                        
                3.8M
             | 
                        
                3.4M
             | 
                    
                
                        | 
                Accounts payable
             | 
                        
                6.1M
             | 
                        
                405K
             | 
                        
                769K
             | 
                        
                778K
             | 
                    
                
                        | 
                Accrued expenses
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Short term debt
             | 
                        
                0
             | 
                        
                0
             | 
                        
                0
             | 
                        
                0
             | 
                    
                
                        | 
                Deferred revenue
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Tax payable
             | 
                        
                1.1M
             | 
                        
                291K
             | 
                        
                2.8M
             | 
                        
                0
             | 
                    
                
                        | 
                Pensions
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Other current liabilities
             | 
                        
                1.0M
             | 
                        
                -1K
             | 
                        
                -1K
             | 
                        
                2.6M
             | 
                    
                
                        | 
                Non current liabilities
             | 
                        
                0
             | 
                        
                -2K
             | 
                        
                -2K
             | 
                        
                85K
             | 
                    
                
                        | 
                Long term provisions
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Long term debt
             | 
                        
                0
             | 
                        
                0
             | 
                        
                —
             | 
                        
                0
             | 
                    
                
                        | 
                Provision for risks and charges
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Deferred liabilities
             | 
                        
                —
             | 
                        
                0
             | 
                        
                —
             | 
                        
                0
             | 
                    
                
                        | 
                Derivative product liabilities
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Other non current liabilities
             | 
                        
                —
             | 
                        
                -2K
             | 
                        
                -2K
             | 
                        
                -1K
             | 
                    
                
                        | 
                Shareholders equity
             | 
                        
                
             | 
                        
                
             | 
                        
                
             | 
                        
                
             | 
                    
                
                        | 
                Common stock
             | 
                        
                110.5M
             | 
                        
                110.5M
             | 
                        
                110.5M
             | 
                        
                110.5M
             | 
                    
                
                        | 
                Retained earnings
             | 
                        
                -26.5M
             | 
                        
                -21.2M
             | 
                        
                -22.1M
             | 
                        
                -23.1M
             | 
                    
                
                        | 
                Other shareholders equity
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Total shareholders equity
             | 
                        
                163.7M
             | 
                        
                169M
             | 
                        
                168.1M
             | 
                        
                167.1M
             | 
                    
                
                        | 
                Additional paid in capital
             | 
                        
                60.4M
             | 
                        
                60.4M
             | 
                        
                60.4M
             | 
                        
                60.4M
             | 
                    
                
                        | 
                Treasury stock
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Minority interest
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             |