| 
                Total assets
             | 
                        
                22.7M
             | 
                        
                39.4M
             | 
                        
                55.5M
             | 
                        
                20.0M
             | 
                    
                
                        | 
                Current assets
             | 
                        
                22.7M
             | 
                        
                39.3M
             | 
                        
                55.4M
             | 
                        
                19.8M
             | 
                    
                
                        | 
                Cash
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Cash equivalents
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Cash and cash equivalents
             | 
                        
                20.8M
             | 
                        
                38.8M
             | 
                        
                55.1M
             | 
                        
                19.0M
             | 
                    
                
                        | 
                Other short term investments
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Accounts receivable
             | 
                        
                18K
             | 
                        
                29K
             | 
                        
                28K
             | 
                        
                37K
             | 
                    
                
                        | 
                Other receivables
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Inventory
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Prepaid assets
             | 
                        
                1.4M
             | 
                        
                521K
             | 
                        
                297K
             | 
                        
                542K
             | 
                    
                
                        | 
                Restricted cash
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Assets held for sale
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Hedging assets
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Other current assets
             | 
                        
                401K
             | 
                        
                40K
             | 
                        
                35K
             | 
                        
                180K
             | 
                    
                
                        | 
                Non current assets
             | 
                        
                23K
             | 
                        
                25K
             | 
                        
                48K
             | 
                        
                202K
             | 
                    
                
                        | 
                Properties
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                0
             | 
                    
                
                        | 
                Land and improvements
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Machinery furniture equipment
             | 
                        
                84K
             | 
                        
                70K
             | 
                        
                70K
             | 
                        
                70K
             | 
                    
                
                        | 
                Construction in progress
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Leases
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                0
             | 
                    
                
                        | 
                Accumulated depreciation
             | 
                        
                -62K
             | 
                        
                -46K
             | 
                        
                -32K
             | 
                        
                -18K
             | 
                    
                
                        | 
                Goodwill
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Investment properties
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Financial assets
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Intangible assets
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Investments and advances
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Other non current assets
             | 
                        
                1K
             | 
                        
                1K
             | 
                        
                10K
             | 
                        
                150K
             | 
                    
                
                        | 
                Total liabilities
             | 
                        
                12.0M
             | 
                        
                11.1M
             | 
                        
                9.4M
             | 
                        
                13.8M
             | 
                    
                
                        | 
                Current liabilities
             | 
                        
                9.2M
             | 
                        
                8.0M
             | 
                        
                6.1M
             | 
                        
                10.0M
             | 
                    
                
                        | 
                Accounts payable
             | 
                        
                5.6M
             | 
                        
                3.9M
             | 
                        
                2.8M
             | 
                        
                4.8M
             | 
                    
                
                        | 
                Accrued expenses
             | 
                        
                2.4M
             | 
                        
                2.8M
             | 
                        
                1.9M
             | 
                        
                2.7M
             | 
                    
                
                        | 
                Short term debt
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Deferred revenue
             | 
                        
                226K
             | 
                        
                226K
             | 
                        
                226K
             | 
                        
                226K
             | 
                    
                
                        | 
                Tax payable
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Pensions
             | 
                        
                1.0M
             | 
                        
                1.2M
             | 
                        
                1.2M
             | 
                        
                2.2M
             | 
                    
                
                        | 
                Other current liabilities
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Non current liabilities
             | 
                        
                2.8M
             | 
                        
                3.0M
             | 
                        
                3.2M
             | 
                        
                3.8M
             | 
                    
                
                        | 
                Long term provisions
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Long term debt
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Provision for risks and charges
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Deferred liabilities
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Derivative product liabilities
             | 
                        
                —
             | 
                        
                —
             | 
                        
                0
             | 
                        
                321K
             | 
                    
                
                        | 
                Other non current liabilities
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Shareholders equity
             | 
                        
                
             | 
                        
                
             | 
                        
                
             | 
                        
                
             | 
                    
                
                        | 
                Common stock
             | 
                        
                210K
             | 
                        
                209K
             | 
                        
                209K
             | 
                        
                124K
             | 
                    
                
                        | 
                Retained earnings
             | 
                        
                -482.6M
             | 
                        
                -463.7M
             | 
                        
                -444.7M
             | 
                        
                -428.6M
             | 
                    
                
                        | 
                Other shareholders equity
             | 
                        
                -23K
             | 
                        
                -33K
             | 
                        
                -14K
             | 
                        
                14K
             | 
                    
                
                        | 
                Total shareholders equity
             | 
                        
                10.7M
             | 
                        
                28.3M
             | 
                        
                46.1M
             | 
                        
                6.2M
             | 
                    
                
                        | 
                Additional paid in capital
             | 
                        
                493.1M
             | 
                        
                491.8M
             | 
                        
                490.6M
             | 
                        
                434.6M
             | 
                    
                
                        | 
                Treasury stock
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Minority interest
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             |