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SEGMENTS, CUSTOMERS AND GEOGRAPHIC INFORMATION (Schedule Of Major Customer Data As Percentage Of Total Revenues) (Details) - Sales Revenue Goods Net [Member]
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Concentration Risk [Line Items]      
Percentage of total revenues   21.10% 27.30%
Affiliate Companies [Member]      
Concentration Risk [Line Items]      
Percentage of total revenues   19.60% 12.30%
Affiliate Companies [Member] | Customer One [Member]      
Concentration Risk [Line Items]      
Percentage of total revenues 14.00%    
Affiliate Companies [Member] | Customer Two [Member]      
Concentration Risk [Line Items]      
Percentage of total revenues 11.80%