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

Financial Instruments (Schedule of Forward and SWAP Contracts) (Details)

v3.8.0.1
Financial Instruments (Schedule of Forward and SWAP Contracts) (Details)
€ in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2017
USD ($)
Dec. 31, 2017
EUR (€)
Dec. 31, 2016
EUR (€)
Disclosure of detailed information about hedges [line items]      
Interest Swap transaction   € 44,864 € 17,737
Interest swap contract [Member] | Amortized semi-annually [Member]      
Disclosure of detailed information about hedges [line items]      
Currency linkage interest rate receivable Euribor 6 months    
Currency linkage interest rate payable Fixed 2.67%    
Date of expiration September 7, 2027    
Fair value | $ $ (28)    
Interest swap transaction period 17 years    
Interest swap contract [Member] | Amortized semi-annually [Member] | Euro [Member]      
Disclosure of detailed information about hedges [line items]      
Interest Swap transaction   8,000  
Interest swap contract [Member] | Amortized quarterly [Member]      
Disclosure of detailed information about hedges [line items]      
Currency linkage interest rate receivable Euribor 3 months    
Currency linkage interest rate payable Fixed 3.595%    
Date of expiration April 3, 2028    
Fair value | $ $ (20)    
Interest swap transaction period 17 years    
Interest swap contract [Member] | Amortized quarterly [Member] | Euro [Member]      
Disclosure of detailed information about hedges [line items]      
Interest Swap transaction   10,000  
Interest swap contract [Member] | Semi-annually [Member]      
Disclosure of detailed information about hedges [line items]      
Currency linkage interest rate receivable Euribor 6 months    
Currency linkage interest rate payable Fixed 2.53%    
Date of expiration June 30, 2027    
Fair value | $ $ (269)    
Interest swap transaction period 15 years    
Interest swap contract [Member] | Semi-annually [Member] | Euro [Member]      
Disclosure of detailed information about hedges [line items]      
Interest Swap transaction   3,750  
Interest rate swap contract [Member] | Semi-annually [Member]      
Disclosure of detailed information about hedges [line items]      
Currency linkage interest rate receivable Euribor 6 months    
Currency linkage interest rate payable Fixed 1.17%    
Date of expiration December 31, 2027    
Fair value | $ $ (222)    
Interest swap transaction period 12 years    
Interest rate swap contract [Member] | Semi-annually [Member] | Euro [Member]      
Disclosure of detailed information about hedges [line items]      
Interest Swap transaction   7,500  
Forward contract [Member]      
Disclosure of detailed information about hedges [line items]      
Currency linkage interest rate payable weighted average rate of approximately 1.18    
Date of expiration November 2021    
Fair value   (2,650)  
Forward contract [Member] | Euro [Member]      
Disclosure of detailed information about hedges [line items]      
Interest Swap transaction   20,000  
Currency swap [Member]      
Disclosure of detailed information about hedges [line items]      
Currency linkage interest rate receivable NIS    
Currency linkage interest rate payable Euro    
Date of expiration June 30, 2024    
Fair value   € (1,244)  
Interest swap transaction period 7 years