Segment and Geographic Information Schedule of Revenue by Geographic Location (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Segments, Geographical Areas [Abstract]
Percentage Of Revenue From Outside U S	29.00%	27.00%	29.00%	28.00%
Percentage Of Revenues Related To Europe	17.00%	17.00%	17.00%	17.00%