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Debentures (Narrative) (Details) ₪ / shares in Units, € in Thousands, ₪ in Thousands, $ in Thousands |  | 1 Months Ended | 12 Months Ended |  |  |  |  |  |  |
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Mar. 14, 2017 ILS (₪) | Mar. 14, 2017 EUR (€) | Sep. 30, 2019 | Sep. 25, 2019 | Jul. 25, 2019 ILS (₪) | Jul. 25, 2019 EUR (€) | Jul. 17, 2019 EUR (€) | Jun. 30, 2019 | Sep. 30, 2018 | Jun. 19, 2014 ILS (₪) | Jun. 19, 2014 EUR (€) | Jan. 31, 2014 ILS (₪) | Jan. 31, 2014 EUR (€) | Dec. 31, 2019 ILS (₪) | Dec. 31, 2019 EUR (€) | Dec. 31, 2018 EUR (€) | Dec. 31, 2017 EUR (€) | Dec. 31, 2019 USD ($) | Dec. 31, 2019 ILS (₪) | Dec. 31, 2019 EUR (€) | Jul. 25, 2019 EUR (€) | Nov. 14, 2017 | Mar. 14, 2017 EUR (€) | Dec. 31, 2016 EUR (€) | Jun. 19, 2014 USD ($) | Jun. 19, 2014 ILS (₪) ₪ / shares | Jun. 19, 2014 EUR (€) | Jan. 31, 2014 EUR (€)
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount of unsecured non convertible debentures |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | € 51,343 |  |  |  | € 71,584 |  |  |  |  |  |  |  |
Net proceeds from offering |  |  |  |  |  |  |  |  |  |  |  |  |  |  | € 22,317 |  | € 31,175 |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.50% |  | 3.50% | 3.50% | 3.50% |  |  |  |  |  |  |  |
Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | € 76,957 | 77,500 |  |  | € 107,566 |  |  |  | € 84,371 |  |  |  |
Repayment of debentures value |  |  |  |  |  |  |  |  |  |  |  |  |  |  | € 9,836 | € 4,668 | € 4,842 |  |  |  |  |  |  |  |  |  |  |
Ratio of equity |  |  |  |  |  |  |  | 29.20% |  |  |  |  |  | 31.60% | 31.60% |  |  |  |  |  |  |  |  |  |  |  |  |
Bottom of range [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.60% |  | 1.60% | 1.60% | 1.60% |  |  |  |  |  |  |  |
Ratio of equity |  |  |  |  |  |  |  | 30.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Top of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.50% |  | 3.50% | 3.50% | 3.50% |  |  |  |  |  |  |  |
Series A Debentures [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount of unsecured non convertible debentures |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | € 20,800 |  |  |  |  |  |  | € 17,115 | € 25,170
Gross proceeds from offering |  |  |  |  |  |  |  |  |  |  | € 17,286 |  | € 24,490 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net proceeds from offering |  |  |  |  |  |  |  |  |  |  | € 16,808 |  | € 24,059 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.60% | 4.60% | 4.60% |
Obligation to pay additional interest |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.00% | 1.00% | 1.00% |
Amount of distribution of equity | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 75,000 |  |  |
Percentage of distributable profit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 75.00% | 75.00% | 75.00% |
Equity | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 55,000 |  |  |  |  |  |  |  |  |  |
Repayment date of debentures |  |  |  |  |  |  |  |  |  |  |  |  |  | Jan. 05, 2020 | Jan. 05, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |
Repayment of debentures value |  |  |  |  |  |  |  |  |  |  |  |  |  |  | € 22,300 |  |  |  |  |  |  |  |  |  |  |  |  |
Principal repayment of debentures value |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20,800 |  |  |  |  |  |  |  |  |  |  |  |  |
Accrued interest in repayment of debenture |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10 |  |  |  |  |  |  |  |  |  |  |  |  |
Prepayment charge in repayment of debenture |  |  |  |  |  |  |  |  |  |  |  |  |  |  | € 1,500 |  |  |  |  |  |  |  |  |  |  |  |  |
Series A Debentures [Member] | Bottom of range [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of equity on consolidated basis |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20.00% | 20.00% | 20.00% |  |  |  |  |  |  |  |
Series A Debentures [Member] | Top of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of equity on consolidated basis |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 65.00% | 65.00% | 65.00% |  |  |  |  |  |  |  |
Series A Debentures [Member] | NIS [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount of unsecured non convertible debentures | ₪ |  |  |  |  |  |  |  |  |  |  |  | ₪ 120,000 |  |  |  |  |  |  |  |  |  |  |  |  |  | ₪ 80,341 |  |
Debenture issued per unit price | ₪ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ₪ 1,010 |  |
Gross proceeds from offering | ₪ |  |  |  |  |  |  |  |  |  | ₪ 81,144 |  | 116,760 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net proceeds from offering | ₪ |  |  |  |  |  |  |  |  |  | ₪ 78,900 |  | ₪ 114,700 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayment of debentures value | ₪ |  |  |  |  |  |  |  |  |  |  |  |  |  | ₪ 85,900 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal repayment of debentures value | ₪ |  |  |  |  |  |  |  |  |  |  |  |  |  | 80,100 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accrued interest in repayment of debenture | ₪ |  |  |  |  |  |  |  |  |  |  |  |  |  | 50 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Prepayment charge in repayment of debenture | ₪ |  |  |  |  |  |  |  |  |  |  |  |  |  | ₪ 5,700 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Series B Debentures [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount of unsecured non convertible debentures |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | € 31,700 |  |  |  |  |
Net proceeds from offering |  | € 31,200 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate | 3.44% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.44% |  |  |  |  |
Obligation to pay additional interest | 0.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.50% |  |  |  |  |
Equity | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 55,000 |  |  |  |  |  |  |  |  |  |
Debentures payable term | Series B Debentures is repayable in six (6) annual installments as follows: on June 30 of each of the years 2019-2022 (inclusive) 15% of the Principal shall be paid, and on June 30 of each of 2023-2024 (inclusive) 20% of the Principal shall be paid, and is not linked to the CPI or otherwise. The Series B Debentures initially bore a fixed interest at the rate of 3.44% per year (that is not linked to the Israeli CPI or otherwise), payable semi-annually on June 30 and December 31 of each of the years 2017 through June 30, 2024 (inclusive). | Series B Debentures is repayable in six (6) annual installments as follows: on June 30 of each of the years 2019-2022 (inclusive) 15% of the Principal shall be paid, and on June 30 of each of 2023-2024 (inclusive) 20% of the Principal shall be paid, and is not linked to the CPI or otherwise. The Series B Debentures initially bore a fixed interest at the rate of 3.44% per year (that is not linked to the Israeli CPI or otherwise), payable semi-annually on June 30 and December 31 of each of the years 2017 through June 30, 2024 (inclusive). |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase in percentage of interest | 0.50% | 0.50% |  | 0.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase in interest percentage due to security rating | 1.75% | 1.75% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | € 21,452 |  |  |  |  |  |  |  |
Decrease in annual interest rate | 1.00% | 1.00% | 0.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Series B Debentures [Member] | Net Financial Debt [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of immediate repayment provision |  |  |  |  |  |  |  |  | 60.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of interest increase provision |  |  |  |  |  |  |  |  | 55.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Series B Debentures [Member] | Company's balance sheet [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of immediate repayment provision |  |  |  |  |  |  |  |  | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of interest increase provision |  |  |  |  |  |  |  |  | 30.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Series B Debentures [Member] | Bottom of range [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.25% |  |  |  |  |  |
Series B Debentures [Member] | Top of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.69% |  |  |  |  |  |
Series B Debentures [Member] | NIS [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount of unsecured non convertible debentures | ₪ | ₪ 123,232 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross proceeds from offering | ₪ | 123,232 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net proceeds from offering | ₪ | ₪ 121,400 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount | ₪ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ₪ 83,232 |  |  |  |  |  |  |  |  |
Series C Debentures [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount of unsecured non convertible debentures |  |  |  |  |  |  | € 22,690 |  |  |  |  |  |  |  |  |  |  |  |  |  | € 22,690 |  |  |  |  |  |  |
Net proceeds from offering |  |  |  |  |  | € 22,317 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  | 3.30% |  | 3.30% |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.30% |  |  |  |  |  |  |
Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 50,000 |  |  |  |  |  |  |  |
Debentures payable term |  |  |  |  | Series C Debentures is repayable in five (5) unequal annual installments as follows: on June 30, 2021 10% of the principal shall be paid, on June 30 of each of the years 2022 and 2023, 15% of the principal shall be paid and on June 30 of each of the years 2024 and 2025, 30% of the principal shall be paid. The Series C Debentures bear a fixed interest at the rate of 3.3% per year (that is not linked to the Israeli CPI or otherwise), payable semi-annually on June 30 and December 31 commencing December 31, 2019 through June 30, 2025 (inclusive). | Series C Debentures is repayable in five (5) unequal annual installments as follows: on June 30, 2021 10% of the principal shall be paid, on June 30 of each of the years 2022 and 2023, 15% of the principal shall be paid and on June 30 of each of the years 2024 and 2025, 30% of the principal shall be paid. The Series C Debentures bear a fixed interest at the rate of 3.3% per year (that is not linked to the Israeli CPI or otherwise), payable semi-annually on June 30 and December 31 commencing December 31, 2019 through June 30, 2025 (inclusive). |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of immediate repayment provision |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | € 60,000 |  |  |  |  |  |  |  |
Series C Debentures [Member] | Net Financial Debt [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of equity on consolidated basis |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 60.00% | 60.00% | 60.00% |  |  |  |  |  |  |  |
Percentage of immediate repayment provision |  |  |  |  | 67.50% | 67.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of interest increase provision |  |  |  |  | 60.00% | 60.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Series C Debentures [Member] | Company's balance sheet [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | € 70,000 |  |  |  |  |  |  |  |
Series C Debentures [Member] | Bottom of range [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  | 0.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.25% |  |  |  |  |  |  |
Series C Debentures [Member] | Top of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  | 0.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.50% |  |  |  |  |  |  |
Series C Debentures [Member] | NIS [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount of unsecured non convertible debentures |  |  |  |  | ₪ 89,065 |  | € 89,065 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross proceeds from offering |  |  |  |  | 89,065 |  | 89,100 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net proceeds from offering |  |  |  |  | ₪ 87,600 |  | € 1,600 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Accrued interest in repayment of debenture. + References No definition available. + Details
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