Condensed Consolidated Statements of Operations (USD $)	3 Months Ended
	Jun. 28, 2013	Jun. 29, 2012
Sales, net	$ 7,078,000	$ 6,216,000
Cost of products sold	4,151,000	3,972,000
Gross profit	2,927,000	2,244,000
Operating expenses:
Research, development and engineering	1,492,000	1,371,000
Sales and marketing	587,000	505,000
General and administrative	1,124,000	1,053,000
Amortization expense	250,000	292,000
Total operating expenses	3,453,000	3,221,000
Loss from operations	(526,000)	(977,000)
Other income (expense):
Interest expense	(160,000)	(33,000)
Change in fair value of warrant liability	(196,000)	17,000
Other expense, net	(43,000)
Total other expense	(399,000)	(16,000)
Loss before benefit for income taxes	(925,000)	(993,000)
Benefit for income taxes
Net loss	$ (925,000)	$ (993,000)
Basic and diluted loss per share	$ (0.03)	$ (0.03)
Weighted average common shares outstanding
Basic and diluted	31,198,000	31,161,000