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The Company And Summary Of Significant Accounting Policies (Schedule Of Revenue By Major Customers By Reporting Segments) (Details) - China [Member] - Sales Revenue, Net [Member]
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Customer A [Member]      
Revenue, Major Customer [Line Items]      
Concentration percentage 97.00% 94.00% 75.00%
Customer B [Member]      
Revenue, Major Customer [Line Items]      
Concentration percentage     20.00%