Significant Customers & Concentration of Credit Risk (Details Textual)	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Maximum Concentration Risk Percentage	10.00%	10.00%
Automative Industry [Member]
Segment Concentration Risk Percentage	17.00%	17.00%
United States Government [Member]
Customer Concentration Risk Percentage	13.00%	15.00%