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Concentration and Major Customers and Suppliers (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2019
Supplier
Jun. 30, 2018
Supplier
Jun. 30, 2019
Supplier
Customer
Jun. 30, 2018
Supplier
Customer
Concentration and Major Customers and Suppliers (Textual)        
Number of major supplier | Supplier 3 1 3 1
Number of customer | Customer    
Sales [Member]        
Concentration and Major Customers and Suppliers (Textual)        
Percentage of concentration risk 10.00% 10.00%    
Supplier One [Member]        
Concentration and Major Customers and Suppliers (Textual)        
Percentage of concentration risk 80.00% 86.00% 80.00%  
Supplier Two [Member]        
Concentration and Major Customers and Suppliers (Textual)        
Percentage of concentration risk 9.00%   9.00%  
Supplier Three [Member]        
Concentration and Major Customers and Suppliers (Textual)        
Percentage of concentration risk 4.00%   4.00% 84.00%