Concentrations (Details Textual)	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Concentrations (Textual)
Customers accounted for segment revenue	No customer accounted for 10% or more	No customer accounted for 10% or more
Suppliers accounted for segment purchases	Three suppliers that accounted for 10% or more	Four suppliers that accounted for 10% or more