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INFORMATION ON GEOGRAPHIC AREAS AND MAJOR CUSTOMERS (Schedule of Revenues by Geographic Area) (Details) - Geographic Concentration [Member] - Revenues [Member]
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Segment Reporting Information [Line Items]      
Percentage 100.00% 100.00% 100.00%
USA [Member]      
Segment Reporting Information [Line Items]      
Percentage 44.00% 45.00% 77.00%
Japan [Member]      
Segment Reporting Information [Line Items]      
Percentage 41.00% 40.00% 2.00%
Asia [Member]      
Segment Reporting Information [Line Items]      
Percentage [1] 11.00% 11.00% 14.00%
Europe [Member]      
Segment Reporting Information [Line Items]      
Percentage [1] 4.00% 4.00% 7.00%
[1] Represents revenues from individual countries of less than 10% each.