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Concentrations and Risks (Details Textual)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
USD ($)
Customer
Jun. 30, 2015
Customer
Jun. 30, 2016
USD ($)
WholesaleCustomer
RawMaterialSuppliers
Jun. 30, 2015
WholesaleCustomer
RawMaterialSuppliers
Dec. 31, 2015
USD ($)
Concentrations and Risks (Textual)          
Allowance for doubtful accounts | $ $ 1,050   $ 1,050   $ 2,180
Revenues [Member]          
Concentrations and Risks (Textual)          
Number of wholesale customer | WholesaleCustomer     1 2  
Wholesale Customer One [Member] | Revenues [Member]          
Concentrations and Risks (Textual)          
Concentration risk, percentage 12.40%   10.00% 13.00%  
Number of wholesale customer 2        
Wholesale Customer Two [Member] | Revenues [Member]          
Concentrations and Risks (Textual)          
Concentration risk, percentage 10.00% 10.00%   11.00%  
Number of wholesale customer 2        
Wholesale Business [Member] | Raw Materials [Member]          
Concentrations and Risks (Textual)          
Concentration risk, percentage 10.00% 10.00% 10.00% 10.00%  
Wholesale Business [Member] | Finished Goods [Member] | Manufacturer One [Member]          
Concentrations and Risks (Textual)          
Concentration risk, percentage 36.10% 35.00% 23.90% 23.00%  
Wholesale Business [Member] | Finished Goods [Member] | Manufacturer Two [Member]          
Concentrations and Risks (Textual)          
Concentration risk, percentage 16.40% 13.00% 17.50% 12.00%  
Number of wholesale customer   2      
Retail Business [Member] | Raw Materials [Member]          
Concentrations and Risks (Textual)          
Concentration risk, percentage     11.90% 10.50%  
Number of raw material supplier | RawMaterialSuppliers     1 1  
Retail Business [Member] | Finished Goods [Member]          
Concentrations and Risks (Textual)          
Concentration risk, percentage 10.00% 10.00% 10.00% 10.00%