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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Schedule of Relevant Exchange Rates) (Details) | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
IL [Member] |  |  |  |
Dollar Exchange Rate of Relevant Currencies [Line Items] |  |  |  |
Exchange rate of one US dollar |  | 3.215 | 3.456 | 3.748
Increase (decrease) during the year: Exchange rate of one US dollar |  | (6.97%) | (7.79%) | 8.10%
BR [Member] |  |  |  |
Dollar Exchange Rate of Relevant Currencies [Line Items] |  |  |  |
Exchange rate of one US dollar |  | 5.1967 | 4.0307 | 3.8748
Increase (decrease) during the year: Exchange rate of one US dollar |  | 28.93% | 4.02% | 17.13%
Israeli Consumer Price Index [Member] |  |  |  |
Dollar Exchange Rate of Relevant Currencies [Line Items] |  |  |  |
Israeli consumer price index | [1] | 113.84 | 114.63 | 113.95
Increase (decrease) during the year: Exchange rate of one US dollar | [1] | (0.69%) | 0.60% | 0.80%
[1] | Based on the Index for the month ending on each balance sheet date, on the basis of 2008 average 100.

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