Note 11 Employee Equity Incentive Plans (Tables)

6 Months Ended

Sep. 30, 2012

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 September 30,				Six Months Ended September 30,
Statement of Operations Classifications			2012		2011		2012		2011
		(unaudited)				(unaudited)
Selling, general and administrative expenses		$	1,036	$	798	$	2,131	$	1,582
Stock-based compensation effect in income before taxes			1,036		798		2,131		1,582
Provision for income taxes (1)			363		287		746		570
Net stock-based compensation effects in net income		$	673	$	511	$	1,385	$	1,012
________________
(1)	Estimated at a statutory income tax rate of 35% in fiscal year 2013 and 36% in fiscal year 2012.

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

		Stock Options								Purchase Plan (1)
		Three Months Ended September 30,				Six Months Ended September 30,				Six Months Ended September 30,
			2012		2011		2012		2011		2012		2011
Weighted average estimated fair
	value of grant per share	$	5.01	$	6.22	$	5.21	$	6.44	$	3.67	$	2.51
Risk-free interest rate			1.0%		1.1%		1.0%		1.4%		0.1%		0.2%
Expected term in years			6.34		5.72		6.34		5.82		0.5		0.5
Volatility			55.5%		55.4%		55.4%		55.5%		46.8%		44.9%
Dividend yield			-		-		-		-		-		-
(1)	Under the stock purchase plan, rights to purchase shares are only granted during the first and third quarters of each fiscal year.

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

			Weighted Average
		Number of	Exercise Price			Intrinsic Value (1)
		Shares	Per Share
						(000)
Balance at March 31, 2012		5,472,004	$	9.75
	Options granted	205,000	$	9.85
	Options exercised	(39,469)	$	6.77	$	155
	Options cancelled	(39,925)	$	7.29
	Options expired	(98,975)	$	5.94
Balance at September 30, 2012		5,498,635	$	9.87
Exercisable at September 30, 2012		4,076,385	$	9.74
Exercisable at March 31, 2012		3,833,879	$	9.42
(1)	Represents the difference between the exercise price and the value of our common stock at the time of exercise.