Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Net sales	$ 15,287	$ 16,686
Cost of sales	10,945	11,601
Gross profit	4,342	5,085
Selling, general, and administrative expenses	10,999	12,045
Research and development expenses	1,820	3,155
Operating loss	(8,477)	(10,115)
Interest income	4	9
Interest expense	(503)	(489)
Debt cost expense	(272)	(372)
Loss on extinguishment of debt	(1,244)
Other, net	(53)	(48)
Loss before provision for income taxes	(10,545)	(11,015)
Income tax provision	12	1
Net loss	$ (10,557)	$ (11,016)
Net loss per common share - basic and diluted (in Dollars per share)	$ (0.23)	$ (0.25)
Weighted average shares used in computing net loss per common share - basic and diluted (in Shares)	45,945	44,246