Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Net sales	$ 3,396	$ 3,756
Cost of sales	2,483	2,628
Gross profit	913	1,128
Selling, general, and administrative expenses	2,730	2,927
Research and development expenses	487	692
Operating loss	(2,304)	(2,491)
Interest income	1	5
Interest expense	(194)	(99)
Debt cost expense	(144)	(41)
Other, net	(5)	(1)
Loss before provision for income taxes	(2,646)	(2,627)
Income tax provision	1	3
Net loss	$ (2,647)	$ (2,630)
Net loss per common share - basic and diluted (in Dollars per share)	$ (0.06)	$ (0.06)
Weighted average shares used in computing net loss per common share - basic and diluted (in Shares)	45,678	44,027