Concentrations and Risks (Details Textual)	3 Months Ended		6 Months Ended
	Jun. 30, 2013 customer manufacturer	Jun. 30, 2012 manufacturer supplier customer	Jun. 30, 2013 manufacturer customer	Jun. 30, 2012 manufacturer customer
Wholesale business [Member]
Concentrations and Risks (Textual)
Number of wholesale customer	2	2	2	2
Percentage of revenue generated from customer			11.00%
Percentage of revenues hold by wholesale customer one	14.00%	11.00%	13.00%	13.00%
Percentage of revenues hold by wholesale customer two	10.00%	11.00%	12.00%	12.00%
Number of raw materials suppliers		1
Percentage of raw materials purchases represented by supplier one		11.00%
Percentage of raw materials purchases represented by supplier two		14.00%
Number of manufacturers of finished goods	2	2	2	2
Percentage of purchased finished goods represented by manufacturer one	17.00%	19.00%	15.00%	17.00%
Percentage of purchased finished goods represented by manufacturer two	16.00%	16.00%	13.00%	13.00%
Retail business [Member]
Concentrations and Risks (Textual)
Number of raw materials suppliers	1	2		1
Percentage of raw materials purchases represented by supplier one	10.00%	11.00%		14.00%
Percentage of raw materials purchases represented by supplier two		14.00%