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Concentration and Major Customers and Suppliers (Details)
3 Months Ended 9 Months Ended
Sep. 30, 2018
Supplier
Customer
Sep. 30, 2017
Supplier
Customer
Sep. 30, 2018
Supplier
Customer
Sep. 30, 2017
Supplier
Customer
Concentration and Major Customers and Suppliers (Textual)        
Number of major supplier | Supplier 3 3 3 3
Number of customer | Customer
Sales [Member]        
Concentration and Major Customers and Suppliers (Textual)        
Percentage of revenue 10.00% 10.00% 10.00% 10.00%
Supplier One [Member]        
Concentration and Major Customers and Suppliers (Textual)        
Percentage of revenue 86.00% 83.00% 85.00% 66.00%
Supplier Two [Member]        
Concentration and Major Customers and Suppliers (Textual)        
Percentage of revenue 7.00% 7.00% 4.00% 11.00%
Supplier Three [Member]        
Concentration and Major Customers and Suppliers (Textual)        
Percentage of revenue 3.00% 4.00% 3.00% 6.00%