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Financial Instruments (Schedule of Interest Rates Used to Discount Estimated Cash Flows) (Details) | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016
Loans from banks [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Inputs used to determine fair value | Euribor+ 2.53% | Euribor+ 2.53%
Finance lease obligations[Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Inputs used to determine fair value | Euribor+ 2.85% | Euribor+ 2.85%
Loans from banks Two [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Inputs used to determine fair value | 4.65% Linkage to Consumer price index in Israel |

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- Definition The description of inputs used in the fair value measurement of liabilities. Inputs are the assumptions that market participants would use when pricing the liability, including assumptions about risk such as the risk inherent in a particular valuation technique used to measure fair value (such as a pricing model) and the risk inherent in the inputs to the valuation technique. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2017-01-01 -Paragraph 93 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=13&date=2017-03-01&anchor=para_93_d&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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