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Equity (Details) | Aug. 31, 2021 USD ($) $ / shares | Dec. 31, 2021 ₪ / shares shares | Aug. 31, 2021 ILS (₪) ₪ / shares | Feb. 28, 2021 USD ($) $ / shares | Feb. 28, 2021 ILS (₪) | Aug. 31, 2020 USD ($) $ / shares | Aug. 31, 2020 ILS (₪) ₪ / shares | Nov. 30, 2019 USD ($) $ / shares | Nov. 30, 2019 ILS (₪) ₪ / shares | Aug. 31, 2019 USD ($) $ / shares
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Equity (Details) [Line Items] |  |  |  |  |  |  |  |  |  |
Ordinary shares | shares |  | 568,620 |  |  |  |  |  |  |  |
Dividend payables |  |  |  |  | ₪ 2.16 | $ 7,960,000 |  | $ 7,079,000 |  | $ 7,953,000
Dividend per share | (per share) |  | ₪ 1 | ₪ 2.53 |  |  | $ 0.52 | ₪ 1.77 | $ 0.46 | ₪ 1,600 | $ 0.52
Dividends payable, non-cash assets distributions | $ 11,932 |  | ₪ 38,694 |  | ₪ 33,036 |  | ₪ 27,071 |  | ₪ 24,471 |
Dividends paid, other shares per share | $ 0.78 |  |  |  |  |  |  |  |  |
Events After Reporting Period [Member] |  |  |  |  |  |  |  |  |  |
Equity (Details) [Line Items] |  |  |  |  |  |  |  |  |  |
Dividend payables | $ |  |  |  | $ 10,155,000 |  |  |  |  |  |
Dividend per share |  |  |  | $ 0.66 |  |  |  |  |  |

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