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Stockholders' Equity (Tables)

12 Months Ended

Mar. 31, 2015

Components of Employee Stock-Based Compensation

The components of employee stock-based compensation for the years ended March 31, 2015, 2014 and 2013 were as follows (in thousands):

	For the Years Ended March 31,
	2015		2014		2013
Stock options	$	1,851	$	2,730	$	3,389
Restricted stock and stock awards		4,063		7,936		4,698
Employee stock purchase plan		22		30		51
Total stock-based compensation expense	$	5,936	$	10,696	$	8,138

Summary of Stock-Based Compensation Expense

The following table summarizes employee stock-based compensation expense by financial statement line item for the years ended March 31, 2015, 2014 and 2013 (in thousands):

	2015		2014		2013
Cost of revenues	$	719	$	1,002	$	726
Research and development		1,728		2,751		2,456
Selling, general and administrative		3,489		6,943		4,956
Total	$	5,936	$	10,696	$	8,138

Summary of Employee and Non-Employee Stock Options Activity

The following table summarizes the information concerning currently outstanding and exercisable employee and non-employee options:

						Weighted-
				Weighted-		Average
				Average		Remaining		Aggregate
	Options/			Exercise		Contractual		Intrinsic Value
	Shares			Price		Term		(thousands)
Outstanding at March 31, 2014		294,184		$	109.31
Granted		100,000			14.30
Exercised		-			-
Cancelled/forfeited		(13,244	)		103.51
Outstanding at March 31, 2015		380,940		$	84.57		6.6	$	-
Exercisable at March 31, 2015		210,869		$	135.95		5.0	$	-
Fully vested and expected to vest at March 31, 2015		363,021		$	87.94		6.5	$	-

Schedule of Weighted Average Assumptions used in Black-Scholes Valuation Model for Stock Options Granted

The weighted average assumptions used in the Black-Scholes valuation model for stock options granted during the years ended March 31, 2015, 2014, and 2013 are as follows:

	For the Years Ended March 31,
	2015			2014			2013
Expected volatility		85.5	%		75.1	%		72.0	%
Risk-free interest rate		1.9	%		1.7	%		0.9	%
Expected life (years)		5.8			5.9			5.9
Dividend yield	None			None			None

Summary of the Employee and Non-Employee Restricted Stock Activity

The following table summarizes the employee and non-employee restricted stock activity for the year ended March 31, 2015:

				Weighted		Intrinsic
				Average		Aggregate
				Grant Date		Value
	Shares			Fair Value		(thousands)
Outstanding at March 31, 2014		241,536		$	33.43
Granted		332,782			16.68
Vested		(210,942	)		29.09
Forfeited		(22,788	)		18.91
Outstanding at March 31, 2015		340,588		$	20.82	$	2,193