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ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Exchange Rates And Linkage Bases) (Details) | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Exchange Rate [Line Items] |  |  |
Israeli CPI Points | 221.57 | 220.24 | 221.13
Israeli CPI Points, Change in period | 0.6 | (0.4) | 0.6
U.S. Dollar To NIS [Member] |  |  |
Exchange Rate [Line Items] |  |  |
Exchange rate | 3.467 | 3.845 | 3.902
Exchange rate, Change in period | (0.10%) | (1.50%) | 0.30%
Euro To NIS [Member] |  |  |
Exchange Rate [Line Items] |  |  |
Exchange rate | 4.1526 | 4.044 | 4.2468
Exchange rate, Change in period | 2.70% | (4.80%) | (10.10%)

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