Note 10 Employee Equity Incentive Plans (Stock Options by Exercise Price Range) (Details) (USD $)					12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2014 Range of Exercise Price $5.01 to $7.75 [Member]	Mar. 31, 2014 Range of Exercise Price $7.76 to $10.00 [Member]	Mar. 31, 2014 Range of Exercise Price $10.01 to $12.50 [Member]	Mar. 31, 2014 Range of Exercise Price $12.51 to $99.99 [Member]	Mar. 31, 2014 Range of Exercise Price $5.01 to $99.99 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	5,201,635	5,327,473	5,472,004	5,199,768	1,023,897	1,591,000	1,680,950	905,788	5,201,635
Weighted Average Contractual Life					4 years 6 months 0 days	6 years 0 months 0 days	6 years 3 months 18 days	3 years 9 months 18 days	5 years 4 months 24 days
Weighted Average Exercise Price Per Share (Options Outstanding)	$ 10.22	$ 10.04	$ 9.75	$ 9.03	$ 6.62	$ 9.26	$ 11.46	$ 13.65
Number of Shares Exercisable	3,865,885				1,023,897	997,000	1,089,200	755,788
Weighted Average Exercise Price Per Share (Options Exercisable)	$ 10.00				$ 6.62	$ 9.14	$ 11.29	$ 13.84