Condensed Consolidated Statements of Operations (USD $)	3 Months Ended		6 Months Ended
	Sep. 30, 2011	Oct. 01, 2010	Sep. 30, 2011	Oct. 01, 2010
Sales, net	$ 8,352,000	$ 6,999,000	$ 16,473,000	$ 13,252,000
Cost of products sold	4,785,000	4,097,000	9,528,000	7,432,000
Gross profit	3,567,000	2,902,000	6,945,000	5,820,000
Operating expenses:
Research, development and engineering	1,714,000	1,303,000	3,406,000	2,591,000
Sales and marketing	565,000	424,000	1,180,000	897,000
General and administrative	1,300,000	952,000	2,459,000	1,964,000
Amortization expense	342,000	408,000	684,000	814,000
Total operating expenses	3,921,000	3,087,000	7,729,000	6,266,000
Loss from operations	(354,000)	(185,000)	(784,000)	(446,000)
Other income (expense):
Interest income	2,000	1,000	4,000	2,000
Interest expense	(31,000)	(56,000)	(62,000)	(106,000)
Interest expense, related parties	(13,000)	(15,000)	(28,000)	(30,000)
Change in fair value of warrant liability	142,000	(143,000)	634,000	(89,000)
Other income/(expense)				(2,000)
Net loss	$ (254,000)	$ (398,000)	$ (236,000)	$ (671,000)
Basic & diluted loss per share	$ (0.01)	$ (0.02)	$ (0.01)	$ (0.03)
Weighted average common shares outstanding
Basic & diluted	30,827,000	25,659,000	30,756,000	25,164,000