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

Financial Instruments (Schedule of Significant Exchange Rates) (Details)

v3.8.0.1
Financial Instruments (Schedule of Significant Exchange Rates) (Details)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
USD [Member]    
Disclosure of nature and extent of risks arising from financial instruments [line items]    
Spot price of 1 Euro at the reporting date 1.00  
1 Euro [Member] | USD [Member]    
Disclosure of nature and extent of risks arising from financial instruments [line items]    
% of change 13.90% (3.40%)
Spot price of 1 Euro at the reporting date 1.198 1.052
1 Euro [Member] | NIS [Member]    
Disclosure of nature and extent of risks arising from financial instruments [line items]    
% of change 2.70% (4.80%)
Spot price of 1 Euro at the reporting date 4.153 4.044