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ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Exchange Rates And Linkage Bases) (Details)
 12 Months Ended
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%)