Note 12 Employee Equity Incentive Plans (Fair Value and Assumptions) (Details) (USD $)	3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award Fair Value Assumptions and Methodology [Line Items]
Weighted Average Estimated Fair Value of Grant Per Share		$ 5.47	[1]
Risk-free Interest Rate		0.90%	[1]
Expected Term in Years		6 years 4 months 2 days	[1]
Volatility		55.40%	[1]
Dividend Yield		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 Fair Value of Grant Per Share	$ 2.60	$ 3.67
Risk-free Interest Rate	0.10%	0.10%
Expected Term in Years	0 years 6 months 0 days	0 years 6 months 0 days
Volatility	38.50%	46.80%
Dividend Yield	0.00%	0.00%

[1] No Stock options were granted during the quarter ended June 30, 2013.