Note 10 Employee Equity Incentive Plans (Fair Value and Assumptions) (Details) (USD $)	12 Months Ended
	Mar. 31, 2014		Mar. 31, 2013		Mar. 31, 2012
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Line Items]
Weighted Average Estimated Per Share Fair Value of Grant	$ 5.31		$ 5.26		$ 6.42
Risk-free Interest Rate	1.80%		1.10%		1.30%
Expected Term in Years	6 years 0 months 18 days		6 years 4 months 2 days		5 years 10 months 6 days
Volatility	54.90%		55.30%		55.70%
Dividend Yield	1.00%	[1]	0.00%	[1]	0.00%	[1]
Employee Stock Purchase Plan 1999 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Line Items]
Weighted Average Estimated Per Share Fair Value of Grant	$ 2.75		$ 3.22		$ 3.14
Risk-free Interest Rate	0.10%		0.20%		0.20%
Expected Term in Years	0 years 6 months 0 days		0 years 6 months 0 days		0 years 6 months 0 days
Volatility	37.00%		46.40%		51.60%
Dividend Yield	0.00%	[1]	0.00%	[1]	0.00%	[1]

[1] Prior to October 1, 2013, the fair value of our equity awards was based on 0% dividend yield.