Note 15 Segment and Geographic Information (Narratives) (Details)	3 Months Ended		6 Months Ended
	Sep. 30, 2013 N	Sep. 30, 2012 N	Sep. 30, 2013 N	Sep. 30, 2012 N
Segment Reporting [Abstract]
Top Customer Percentage More Than 10% of Total Revenue	12.10%	14.10%	12.50%	13.20%
Second Customer Percentage More Than 10% of Total Revenue	9.70%	10.00%	10.60%	10.90%
Number of Major Customers	2	2	2	2