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Stockholders' Equity (Tables)

12 Months Ended

Mar. 31, 2013

Stockholders' Equity [Abstract]

Components Of Employee Stock-Based Compensation

		For the Years Ended March 31,
		2013		2012		2011
Stock options	$	3,389	$	6,177	$	6,374
Restricted stock and stock awards		4,698		3,633		6,919
Employee stock purchase plan		51		54		119
Total stock-based compensation expense	$	8,138	$	9,864	$	13,412

Summary Of Employee Stock-Based Compensation Expense By Financial Statement Line Item

	For the Years Ended March 31,
		2013		2012		2011
Cost of revenues	$	726	$	1,121	$	1,188
Research and development		2,456		2,562		1,977
Selling, general and administrative		4,956		6,181		10,247
Total	$	8,138	$	9,864	$	13,412

Summary Of Employee And Non-Employee Stock Options Activity

				Weighted-
			Weighted-	Average
			Average	Remaining		Aggregate
	Options/		Exercise	Contractual		Intrinsic Value
	Shares		Price	Term		(thousands)
Outstanding at March 31, 2012	2,290,416	$	17.77
Granted at fair value	857,450		4.09
Exercised	(480)		3.44
Cancelled/forfeited	(476,192)		15.57
Outstanding at March 31, 2013	2,671,194	$	13.77	6.4	$	0
Exercisable at March 31, 2013	1,443,185	$	16.65	4.6	$	0
Fully vested and expected to vest at March 31, 2013	2,577,218	$	13.88	6.3	$	0

Schedule Of Weighted Average Assumptions Used In The Black-Scholes Valuation Model For Stock Options Granted

	For the Years Ended March 31,
	2013		2012		2011
Expected volatility	72.0	%	70.0	%	64.2	%
Risk-free interest rate	0.9	%	1.8	%	2.2	%
Expected life (years)	5.9		5.9		5.8
Dividend yield	None		None		None

Summary Of The Employee And Non-Employee Restricted Stock Activity

			Weighted		Intrinsic
			Average		Aggregate
			Grant Date		Value
	Shares		Fair Value		(thousands)
Outstanding at April 1, 2012	929,489	$	10.00
Granted	3,126,749		3.48
Vested	(1,004,920)		7.37
Forfeited	(646,493)		4.76
Outstanding at March 31, 2013	2,404,825	$	4.58	$	6,421

X

- Definition

Tabular disclosure of the amount of total share-based compensation cost, including the amounts attributable to each share-based compensation plan and any related tax benefits.

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