Consolidated Statements of Stockholders' (Deficit) Equity (USD $) In Thousands, except Share data	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Total
Balance at Mar. 31, 2010	$ 369	$ 81,968		$ (76,412)	$ 5,925
Balance (in Shares) at Mar. 31, 2010	36,856
Exercise of stock options	1	146			147
Exercise of stock options (in Shares)	129
Stock issued in private placement	70	10,430			10,500
Stock issued in private placement (in Shares)	7,000
Issuance of stock warrants to lender—related party		117			117
Issuance of restricted stock awards	8				8
Issuance of restricted stock awards (in Shares)	795
Cancellation of restricted stock awards	(8)				(8)
Cancellation of restricted stock awards (in Shares)	(755)
Stock-based compensation expense		1,678			1,678
Net loss				(11,843)	(11,843)
Balance at Mar. 31, 2011	440	94,339		(88,255)	6,524
Balance (in Shares) at Mar. 31, 2011	44,025
Exercise of stock options	4	424			428
Exercise of stock options (in Shares)	348
Cashless exercise of stock options	7	(7)
Cashless exercise of stock options (in Shares)	706
Issuance of stock warrants to lender—related party		1,611			1,611
Issuance of restricted stock awards	4	(4)
Issuance of restricted stock awards (in Shares)	406
Cancellation of restricted stock awards	(1)	1
Cancellation of restricted stock awards (in Shares)	(89)
Common stock repurchased			(14)		(14)
Common stock repurchased (in Shares)			7
Stock-based compensation expense		2,018			2,018
Net loss				(11,016)	(11,016)
Balance at Mar. 31, 2012	$ 454	$ 98,382	$ (14)	$ (99,271)	$ (449)
Balance (in Shares) at Mar. 31, 2012	45,396		7