Stock-Based Compensation And Employee Purchase Plans (Tables)

12 Months Ended

Mar. 31, 2013

Employee Stock Purchase Plan

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

The estimated fair value of stock purchase rights granted under the Purchase Plans were estimated using the Black-Scholes pricing model with the following weighted-average assumptions:

		Years Ended March 31,
		2013		2012		2011
Expected volatility		40%		73%		61%
Expected dividend yield		-		-		-
Risk-free interest rate		0.14%		0.10%		0.23%
Weighted average expected rights term		0.75 years		0.75 years		0.75 years
Weighted average fair value of rights granted	$	1.78	$	1.67	$	0.79

Stock Options

Disclosure Of Share-Based Compensation Arrangements By Share-Based Payment Award

Option activity under the Company's stock option plans since March 31, 2010, is summarized as follows:

.				Weighted
		Shares		Average
	Shares	Subject to		Exercise
	Available	Options		Price
	for Grant	Outstanding		Per Share
Balance at March 31, 2010	2,869,411	9,267,403	$	1.90
Granted - Options	(502,000)	502,000		2.69
Stock purchase rights	(836,432)	-		1.72
Exercised	-	(1,204,776)		1.48
Canceled/Forfeited	1,595,431	(1,595,431)		3.92
Termination of plans	(1,572,431)	-
Balance at March 31, 2011	1,553,979	6,969,196		1.56
Granted - Options (2)	(685,500)	857,474		4.05
Stock purchase rights (1)	(563,100)	-		3.64
Exercised	-	(1,645,308)		1.35
Canceled/Forfeited	147,027	(147,027)		2.07
Termination of plans	(76,860)	-
Balance at March 31, 2012	375,546	6,034,335		1.90
Change in options available for grant	4,100,000	-		-
Granted - Options	(932,000)	932,000		5.80
Stock purchase rights	(443,436)	-		5.75
Restricted Stock Units	(25,000)	-		-
Exercised	-	(835,246)		1.49
Canceled/Forfeited - Options	139,545	(139,545)		4.00
Canceled/Forfeited - Restricted Stock Units	4,000	-		-
Termination of plans	(43,394)	-
Balance at March 31, 2013	3,175,261	5,991,544	$	2.52

(1) The reduction to shares available for grant includes awards granted of 563,100 shares.
(2) The increase to shares subject to options outstanding includes 171,974 shares subject to options assumed under the 2003 Contactual Plan.

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

The fair value of each of the Company's option grants has been estimated on the date of grant using the Black-Scholes pricing model with the following assumptions:

		Years Ended March 31,
		2013		2012		2011
Expected volatility		70%		72%		69%
Expected dividend yield		-		-		-
Risk-free interest rate		0.5% to 0.8%		0.3% to 1.2%		1.2% to 2.0%
Weighted average expected option term		5.3 years		4.8 years		4.3 years
Weighted average fair value of options granted	$	3.32	$	2.30	$	1.45

Stock Purchase Rights

Disclosure Of Share-Based Compensation Arrangements By Share-Based Payment Award

Stock Purchase Right activity since March 31, 2010 is summarized as follows:

			Weighted	Weighted
			Average	Average
			Grant-Date	Remaining
	Number of		Fair Market	Contractual
	Shares		Value	Term (in Years)
Balance at March 31, 2010	353,720	$	0.71	3.26
Granted	836,432		1.72
Vested	(175,269)		0.96
Forfeited	(128,438)		1.46
Balance at March 31, 2011	886,445		1.51	3.00
Granted	563,100		3.64
Vested	(326,683)		1.55
Forfeited	(156,462)		2.99
Balance at March 31, 2012	966,400		2.50	2.61
Granted	443,436		5.75
Vested	(367,017)		2.14
Forfeited	(84,244)		2.89
Balance at March 31, 2013	958,575	$	4.11	2.52

Restricted Stock Units

Disclosure Of Share-Based Compensation Arrangements By Share-Based Payment Award

Restricted Stock Unit activity since June 22, 2012 is summarized as follows:

				Weighted
				Average
			Weighted	Remaining
	Number of		Average	Contractual
	Shares		Purchase Price	Term (in Years)
Balance at June 22, 2012	-	$	-
Granted	25,000		-
Vested	-		-
Forfeited	-		-
Balance at March 31, 2013	25,000	$	-	2.47