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%