Stock-Based Compensation And Employee Purchase Plans (Tables)

9 Months Ended

Dec. 31, 2012

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 Employee Stock Purchase Plan was estimated at the date of grant using Black-Scholes pricing model with the following weighted average assumptions:

		Three Months Ended				Nine Months Ended
		December 31,				December 31,
		2012		2011		2012		2011
Expected volatility		-		-		34%		68%
Expected dividend yield		-		-		-		-
Risk-free interest rate		-		-		0.16%		0.10%
Weighted average expected option term		-		-		0.75 years		0.75 years
Weighted average fair value of options granted	$	-	$	-	$	1.45	$	1.49

Stock Options

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

Option activity since March 31, 2012 is summarized as follows:

				Weighted
		Shares		Average
	Shares	Subject to		Exercise
	Available	Options		Price
	for Grant	Outstanding		Per Share
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/restricted stock units	(409,936)	-		-
Exercised	-	(777,487)		1.48
Canceled/forfeited	135,133	(135,133)		4.01
Termination of plans	(43,004)	-		-
Balance at December 31, 2012	3,225,739	6,053,715	$	2.51

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

The following table summarizes the assumptions used to estimate the fair value of stock options to employees and directors for the three and nine months ended December 31, 2012 and 2011:

		Three Months Ended				Nine Months Ended
		December 31,				December 31,
		2012		2011		2012		2011
Expected volatility		68%		75%		68%		76%
Expected dividend yield		-		-		-		-
Risk-free interest rate		0.68%		0.44%		0.70%		0.35%
Weighted average expected option term		4.50 years		3.25 years		5.28 years		3.04 years
Weighted average fair value of options granted	$	3.18	$	1.96	$	3.32	$	2.20

Stock Purchase Rights/Restricted Stock Unit

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

Stock purchase right/restricted stock unit activity since March 31, 2012 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, 2012	966,400	$	2.50	2.61
Granted	409,936		5.65
Released	(281,938)		2.16
Forfeited	(80,244)		2.72
Balance at December 31, 2012	1,014,154	$	3.85	2.62