Concentrations and Risks (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Concentrations and Risks (Textual)
Allowance for doubtful accounts	$ 4,500		$ 4,500		$ 5,900
Concentration risk, description			For the wholesale business, the Company did not rely on any finished goods supplier that represented more than 10% of the total raw material purchases
Raw Material Suppliers One [Member]
Concentrations and Risks (Textual)
Concentration risk, percentage	19.00%	22.00%	28.00%
Raw Material Supplier Two [Member]
Concentrations and Risks (Textual)
Concentration risk, percentage			27.00%
Raw Material Supplier Three [Member]
Concentrations and Risks (Textual)
Concentration risk, percentage			18.00%
Raw Material Supplier Four [Member]
Concentrations and Risks (Textual)
Concentration risk, percentage			15.00%
Raw Material Suppliers [Member]
Concentrations and Risks (Textual)
Concentration risk, percentage			10.00%	10.00%
Revenues [Membe] | Wholesale Business One [Member]
Concentrations and Risks (Textual)
Concentration risk, percentage	10.00%	7.00%	17.00%	11.00%
Revenues [Membe] | Wholesale Business Two [Member]
Concentrations and Risks (Textual)
Concentration risk, percentage		7.00%		12.00%
Finished Goods [Member] | Retail Business [Member]
Concentrations and Risks (Textual)
Concentration risk, percentage			10.00%	10.00%