Concentrations (Details Textual)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Sales revenue [Member]
Concentrations (Textual)
Customers accounted for total revenue	No customer accounted for 10% or more	No customer accounted for 10% or more
Purchase [Member]
Concentrations (Textual)
Suppliers accounted for total purchase	Two suppliers accounted for 10% or more	Thres suppliers accounted for 10% or more