Note 14 Segment and Geographic Information (Narratives) (Details)	12 Months Ended
	Mar. 31, 2013 N	Mar. 31, 2012 N	Mar. 31, 2011 N
Segment Reporting [Abstract]
Top Customer Percentage More than 10% of Total Revenue	13.20%	11.30%	11.90%
Second Customer Percentage More than 10% of Total Revenue	10.30%	11.10%	11.80%
Number of Major Customers	2	2	2