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Concentration and Major Customers and Suppliers (Details) - Customers
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Concentration and Major Customers and Suppliers (Textual)        
Number of major suppliers 3 3 3 3
Number of customer contributed over 10% of total sales    
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 60.00% 61.00% 56.00% 63.00%
Supplier Two [Member]        
Concentration and Major Customers and Suppliers (Textual)        
Percentage of revenue 20.00% 16.00% 18.00% 15.00%
Supplier Three [Member]        
Concentration and Major Customers and Suppliers (Textual)        
Percentage of revenue 7.00% 8.00% 7.00% 7.00%