Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Net sales	$ 3,752	$ 3,652
Cost of sales	2,603	2,572
Gross profit	1,149	1,080
Selling, general, and administrative expenses	2,491	3,050
Research and development expenses	536	419
Operating loss	(1,878)	(2,389)
Interest expense	(83)	(41)
Other, net	(16)	(4)
Loss before provision for income taxes	(1,977)	(2,434)
Net loss per common share - basic and diluted (in Dollars per share)	$ (0.04)	$ (0.05)
Weighted average shares used in computing net loss per common share - basic and diluted (in Shares)	46,260	46,109
Net loss	$ (1,977)	$ (2,434)