Segment and Geographic Information (Tables)

9 Months Ended

Sep. 30, 2011

Segment Reporting [Abstract]

Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]

The following table summarizes the percentage of the Company's revenues derived from operations outside of the United States:

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2011		2010		2011		2010
Revenues derived from outside of the United States	29	%	28	%	29	%	28	%
Revenues derived from Europe	18	%	16	%	18	%	17	%