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Major Customer and Geographic Information (Schedule of Revenues from Non-affiliated Customers) (Details) - Revenue [Member]
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Customer A [Member]    
Revenue, Major Customer [Line Items]    
Risk percentage 14.00% 53.00%
Customer B [Member]    
Revenue, Major Customer [Line Items]    
Risk percentage 25.00% 17.00%
Customer C [Member]    
Revenue, Major Customer [Line Items]    
Risk percentage 38.00%