Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended				6 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2012		Sep. 30, 2011
Net sales	$ 3,739		$ 4,025		$ 7,135		$ 7,781
Cost of sales	2,669		2,628		5,152		5,256
Gross profit	1,070		1,397		1,983		2,525
Selling, general, and administrative expenses	3,164		3,463		5,894		6,389
Research and development expenses	527		739		1,014		1,431
Operating loss	(2,621)		(2,805)		(4,925)		(5,295)
Interest income	1		2		2		7
Interest expense	(237)		(99)		(431)		(198)
Debt cost expense	(128)	[1]	(43)	[1]	(272)	[1]	(84)	[1]
Loss on extinguishment of debt	(1,244)				(1,244)
Other, net	(35)		(10)		(40)		(11)
Loss before provision for income taxes	(4,264)		(2,955)		(6,910)		(5,581)
Income tax provision			(2)		1		2
Net loss	$ (4,264)		$ (2,953)		$ (6,911)		$ (5,583)
Net loss per common share - basic and diluted (in Dollars per share)	$ (0.09)		$ (0.07)		$ (0.15)		$ (0.13)
Weighted average shares used in computing net loss per common share - basic and diluted (in Shares)	45,974		44,204		45,827		44,116

[1] Expense through September 19, 2012.