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Concentration and Major Customers and Suppliers (Details) - Customers
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Concentration and Major Customers and Suppliers (Textual)    
Number of major suppliers 3 3
Number of customer 2
Sales [Member]    
Concentration and Major Customers and Suppliers (Textual)    
Percentage of revenue 20.00% 10.00%
Supplier One [Member]    
Concentration and Major Customers and Suppliers (Textual)    
Percentage of revenue 41.00% 52.00%
Supplier Two [Member]    
Concentration and Major Customers and Suppliers (Textual)    
Percentage of revenue 20.00% 16.00%
Supplier Three [Member]    
Concentration and Major Customers and Suppliers (Textual)    
Percentage of revenue 10.00% 14.00%