Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Finance Lease Obligation (Narrative) (Details)

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Finance Lease Obligation (Narrative) (Details) - EUR (€)
€ in Thousands
1 Months Ended 12 Months Ended
Dec. 31, 2010
Dec. 31, 2017
Dec. 31, 2016
Mar. 31, 2012
Dec. 31, 2011
Dec. 30, 2010
Disclosure of maturity analysis of finance lease payments receivable [line items]            
Annual interest rate 3.43% 3.50% 3.50%      
Term of leasing agreements 17 Years          
Linkage terms 3 months EURIBOR EURIBOR        
Euro [Member]            
Disclosure of maturity analysis of finance lease payments receivable [line items]            
Financial leasing agreement € 6,000          
Aggregate amount received under leasing agreement drawdowns       € 819 € 5,000  
Net of expenses capitalized amount         € 1,142  
Italian Subsidiaries One [Member] | Euro [Member]            
Disclosure of maturity analysis of finance lease payments receivable [line items]            
Financial leasing agreement 3,000          
Monthly lease payment € 20          
Italian Subsidiaries Two [Member] | Euro [Member]            
Disclosure of maturity analysis of finance lease payments receivable [line items]            
Financial leasing agreement           € 3,000
Monthly lease payment           € 20