Condensed Consolidated Statements of Operations (USD $)	3 Months Ended		6 Months Ended
	Sep. 27, 2013	Sep. 28, 2012	Sep. 27, 2013	Sep. 28, 2012
Sales, net	$ 7,536,000	$ 5,586,000	$ 14,614,000	$ 11,802,000
Cost of products sold	4,747,000	3,612,000	8,898,000	7,584,000
Gross profit	2,789,000	1,974,000	5,716,000	4,218,000
Operating expenses:
Research, development and engineering	1,234,000	1,342,000	2,726,000	2,713,000
Sales and marketing	640,000	496,000	1,227,000	1,001,000
General and administrative	1,202,000	1,119,000	2,326,000	2,172,000
Amortization expense	259,000	291,000	509,000	583,000
Total operating expenses	3,335,000	3,248,000	6,788,000	6,469,000
Loss from operations	(546,000)	(1,274,000)	(1,072,000)	(2,251,000)
Other income (expense):
Interest expense	(165,000)	(30,000)	(325,000)	(63,000)
Change in fair value of warrant liability	107,000	(4,000)	(89,000)	13,000
Other income (loss)	26,000	21,000	(17,000)	21,000
Total other expense	(32,000)	(13,000)	(431,000)	(29,000)
Loss before benefit for income taxes	(578,000)	(1,287,000)	(1,503,000)	(2,280,000)
Benefit for income taxes
Net loss	$ (578,000)	$ (1,287,000)	$ (1,503,000)	$ (2,280,000)
Basic & diluted loss per share	$ (0.02)	$ (0.04)	$ (0.05)	$ (0.07)
Weighted average common shares outstanding
Basic & diluted	31,229,000	31,161,000	31,213,000	31,161,000