Segment and Geographic Area Information (Details 2)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
General Motors [Member]
Revenue percent by major customers [Abstract]
Customer accounted for ten percent or more of net sales	19.00%	19.00%	16.00%
Ford [Member]
Revenue percent by major customers [Abstract]
Customer accounted for ten percent or more of net sales	15.00%	13.00%	14.00%