Concentrations and Risks (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Revenues earned in geographic areas
Net Sales	$ 392,666	$ 421,389
Total wholesale business [Member]
Revenues earned in geographic areas
Net Sales	188,232	196,589
Retail business [Member]
Revenues earned in geographic areas
Net Sales	204,434	224,800
Mainland China [Member]
Revenues earned in geographic areas
Net Sales	61,589	81,283
Hong Kong China [Member]
Revenues earned in geographic areas
Net Sales	22,853	25,411
Germany [Member]
Revenues earned in geographic areas
Net Sales	8,167	13,425
United Kingdom [Member]
Revenues earned in geographic areas
Net Sales	14,865	16,098
Europe-Other [Member]
Revenues earned in geographic areas
Net Sales	46,266	29,556
Japan [Member]
Revenues earned in geographic areas
Net Sales	11,374	13,039
United States [Member]
Revenues earned in geographic areas
Net Sales	$ 23,118	$ 17,777