Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Net sales	$ 3,652	$ 3,396
Cost of sales	2,572	2,483
Gross profit	1,080	913
Selling, general, and administrative expenses	3,050	2,730
Research and development expenses	419	487
Operating loss	(2,389)	(2,304)
Interest expense	(41)	(194)
Debt cost expense		(144)
Other, net	(4)	(4)
Loss before provision for income taxes	(2,434)	(2,646)
Income tax provision		1
Net loss	$ (2,434)	$ (2,647)
Net loss per common share - basic and diluted (in Dollars per share)	$ (0.05)	$ (0.06)
Weighted average shares used in computing net loss per common share - basic and diluted (in Shares)	46,109	45,678