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Segments and Major Customers (Details 1) - Customer Concentration Risk - Accounts Receivable [Member]
Mar. 31, 2019
Dec. 31, 2018
Customer 1 [Member]    
Concentration Risk [Line Items]    
Customer concentration risk   12.00%
Customer 2 [Member]    
Concentration Risk [Line Items]    
Customer concentration risk 14.00%  
Customer 3 [Member]    
Concentration Risk [Line Items]    
Customer concentration risk 36.00% 39.00%