Note 11 Employee Equity Incentive Plans (Fair Value and Assumptions) (Details) (USD $)	3 Months Ended		9 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014		Dec. 31, 2013
Employee Stock Option [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			$ 5.54	[1]	$ 4.95	[1]
Risk-free Interest Rate			1.80%	[1]	1.90%	[1]
Expected Term in Years			6 years 3 months 18 days	[1]	6 years 3 months 18 days	[1]
Volatility			52.20%	[1]	55.50%	[1]
Dividend Yield			1.00%	[1]	0.00%	[1]
Amended and Restated 1999 Employee Stock Purchase Plan [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	$ 2.90	$ 2.94	$ 2.90		$ 2.75
Risk-free Interest Rate	0.10%	0.10%	0.10%		0.10%
Expected Term in Years	0 years 6 months 0 days	0 years 6 months 0 days	0 years 6 months 0 days		0 years 6 months 0 days
Volatility	38.70%	35.00%	36.90%		37.00%
Dividend Yield	1.05%	0.00%	1.06%		0.00%

[1] No Stock options were granted during the quarters ended December 31, 2014 and 2013.