Note 12 Employee Equity Incentive Plans (Allocated Share-based Compensation Expense) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				12 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Mar. 31, 2014	Mar. 31, 2013
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based Compensation Effect in Income Before Taxes	$ 671		$ 1,095
Provision for Income Taxes	208	[1]	383	[1]
Net Stock-based Compensation Effects on Net Income	463		712
Estimated Statutory Income Tax Rate					31.00%	35.00%
Cost of Goods Sold [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based Compensation Effect in Income Before Taxes	166		116
Research, Development and Engineering [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based Compensation Effect in Income Before Taxes	208		281
Selling, General and Administrative Expenses [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based Compensation Effect in Income Before Taxes	$ 297		$ 698

[1] Estimated at a statutory income tax rate of 31% in fiscal year 2014 and 35% in fiscal year 2013.