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Segments and Major Customers (Details 2) - Customer Concentration Risk - Sales, net
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Customer A        
Concentration Risk [Line Items]        
Revenue from major customer as a percentage of total revenue   17.00%   17.00%
Customer B        
Concentration Risk [Line Items]        
Revenue from major customer as a percentage of total revenue   13.00%   13.00%
Customer C        
Concentration Risk [Line Items]        
Revenue from major customer as a percentage of total revenue   14.00%   14.00%
Customer D        
Concentration Risk [Line Items]        
Revenue from major customer as a percentage of total revenue     15.00%  
Customer E        
Concentration Risk [Line Items]        
Revenue from major customer as a percentage of total revenue 28.00%   16.00%  
Customer F        
Concentration Risk [Line Items]        
Revenue from major customer as a percentage of total revenue 15.00%      
Customer G        
Concentration Risk [Line Items]        
Revenue from major customer as a percentage of total revenue 11.00%