Note 11 Employee Equity Incentive Plans (Tables)

3 Months Ended

Jun. 30, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

	Three Months Ended June 30,
Statement of Operations Classifications		2014		2013
	(unaudited)
Cost of goods sold	$	108	$	166
Research, development and engineering		189		208
Selling, general and administrative expenses		384		297
Stock-based compensation effect in income before taxes		681		671
Provision for income taxes (1)		211		208
Net stock-based compensation effects in net income	$	470	$	463
________________
(1) Estimated at a statutory income tax rate of 31% in fiscal year 2015 and 2014, respectively.

Schedule of Employee Service Share-based Compensation, Fair Value Assumptions and Methodology [Table Text Block]

		Stock Options (1)				Purchase Plan
		Three Months				Three Months
		Ended June 30,				Ended June 30,
		2014		2013		2014		2013
		(unaudited)				(unaudited)
Weighted average estimated fair
	value of grant per share	$	na	$	na	$	2.90	$	2.60
Risk-free interest rate			na		na		0.1%		0.1%
Expected term in years			na		na		0.5		0.5
Volatility			na		na		34.5%		38.5%
Dividend yield			na		na		1.06%		0%
(1) No stock options were granted during the quarters ended June 30, 2014 and 2013.

Schedule of Share-based Compensation, Stock Options Activity [Table Text Block]

			Weighted Average
		Number of	Exercise Price			Intrinsic Value (000) (1)
		Shares	Per Share
			(unaudited)
Balance at March 31, 2014		5,201,635	$	10.22
	Options granted	-	$	-
	Options exercised	(33,750)	$	9.67	$	77
	Options cancelled	(56,250)	$	11.13
	Options expired	(5,000)	$	8.36
Balance at June 30, 2014		5,106,635	$	10.21
Exercisable at June 30, 2014		3,970,885	$	10.03
Exercisable at March 31, 2014		3,865,885	$	10.00
(1) Represents the difference between the exercise price and the value of our common stock at the time of exercise.