Concentrations and Risks (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Accounts Receivable [Member]
Concentrations and Risks (Textual)
Allowance for doubtful accounts	$ 4,500	$ 5,900
Retail Business [Member] | Finished Goods [Member]
Concentrations and Risks (Textual)
Concentration risk, percentage	10.00%	10.00%
Retail Business [Member] | Raw Material Suppliers One [Member]
Concentrations and Risks (Textual)
Concentration risk, percentage	36.00%	30.00%
Retail Business [Member] | Raw Material Supplier Two [Member]
Concentrations and Risks (Textual)
Concentration risk, percentage	35.00%	23.00%
Retail Business [Member] | Raw Material Supplier Three [Member]
Concentrations and Risks (Textual)
Concentration risk, percentage	23.00%
wholesale customers [Member] | Raw Materials [Member]
Concentrations and Risks (Textual)
Concentration risk, percentage	10.00%
wholesale customers [Member] | Manufacturer One [Member] | Finished Goods [Member]
Concentrations and Risks (Textual)
Concentration risk, percentage	11.00%	14.00%
wholesale customers [Member] | Manufacturer Two [Member] | Finished Goods [Member]
Concentrations and Risks (Textual)
Concentration risk, percentage	10.00%
Wholesale Business One [Member] | Revenues [Member]
Concentrations and Risks (Textual)
Concentration risk, percentage	26.00%	18.00%
Wholesale Business Two [Member] | Revenues [Member]
Concentrations and Risks (Textual)
Concentration risk, percentage	11.00%