Consolidated Statements of Stockholders' Equity (USD $) In Thousands, unless otherwise specified		Total	Common Stock [Member]	Additional Paid In Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Deficit [Member]
Balance, beginning of period at Mar. 31, 2010		$ 280,874	$ 654	$ 5,905,050	$ 2,430	$ (5,627,260)
Balance, shares, beginning of period at Mar. 31, 2010			65,404
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock		5,299	25	5,274
Issuance of common stock, shares			2,481
Repurchase of common stock		(40,063)	(37)	(40,026)
Repurchase of common stock, shares			(3,744)
Funding of structured stock repurchase agreements		(10,000)	(5)	(9,995)
Funding of structured stock repurchase agreements, shares			(475)
Funds received from structured stock repurchase agreements including gains		15,512		15,512
Stock-based compensation expense	[1]	15,221		15,221
Other comprehensive (loss) gain		(4,027)			(4,027)
Net loss		(1,006)				(1,006)
Balance, end of period at Mar. 31, 2011		261,810	637	5,891,036	(1,597)	(5,628,266)
Balance, shares, end of period at Mar. 31, 2011			63,666
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock		3,873	27	3,846
Issuance of common stock, shares			2,727
Repurchase of common stock		(20,852)	(35)	(20,817)
Repurchase of common stock, shares			(3,487)
Funding of structured stock repurchase agreements		(10,000)	(10)	(9,990)
Funding of structured stock repurchase agreements, shares			(1,027)
Stock-based compensation expense	[1]	17,261		17,261
Other comprehensive (loss) gain		(168)			(168)
Net loss		(82,688)				(82,688)
Balance, end of period at Mar. 31, 2012		169,236	619	5,881,336	(1,765)	(5,710,954)
Balance, shares, end of period at Mar. 31, 2012			61,879
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock		22,441	62	22,379
Issuance of common stock, shares			6,199
Repurchase of common stock		(653)	(1)	(652)
Repurchase of common stock, shares			(126)
Stock-based compensation expense	[1]	23,567		23,567
Other comprehensive (loss) gain		1,028			1,028
Net loss		(134,115)				(134,115)
Balance, end of period at Mar. 31, 2013		$ 81,504	$ 680	$ 5,926,630	$ (737)	$ (5,845,069)
Balance, shares, end of period at Mar. 31, 2013			67,952

[1] Veloce’s stock-based compensation expense related to warrants is included in issuance of common stock.