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Concentration and Major Customers and Suppliers (Details)
3 Months Ended
Mar. 31, 2019
Supplier
Customer
Mar. 31, 2018
Supplier
Customer
Concentration and Major Customers and Suppliers (Textual)    
Number of major supplier | Supplier 3 3
Number of customer | Customer
Supplier One [Member]    
Concentration and Major Customers and Suppliers (Textual)    
Percentage of revenue 80.00% 41.00%
Supplier Two [Member]    
Concentration and Major Customers and Suppliers (Textual)    
Percentage of revenue 9.00% 20.00%
Supplier Three [Member]    
Concentration and Major Customers and Suppliers (Textual)    
Percentage of revenue 4.00% 10.00%
Sales [Member]    
Concentration and Major Customers and Suppliers (Textual)    
Percentage of revenue 10.00% 10.00%