Note 11 Employee Equity Incentive Plans (Fair Value and Assumptions) (Details) (Amended and Restated 1999 Employee Stock Purchase Plan [Member], USD $)	3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
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	$ 2.60
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	34.50%	38.50%
Dividend Yield	1.06%	0.00%