Condensed Consolidated Statements of Operations (USD $)	3 Months Ended		9 Months Ended
	Dec. 30, 2011	Dec. 31, 2010	Dec. 30, 2011	Dec. 31, 2010
Sales, net	$ 6,518,000	$ 7,720,000	$ 22,991,000	$ 20,972,000
Cost of products sold	3,828,000	4,636,000	13,356,000	12,068,000
Gross profit	2,690,000	3,084,000	9,635,000	8,904,000
Operating expenses:
Research, development and engineering	1,660,000	1,362,000	5,066,000	3,953,000
Sales and marketing	484,000	455,000	1,664,000	1,352,000
General and administrative	1,062,000	1,028,000	3,521,000	2,992,000
Amortization expense	344,000	409,000	1,028,000	1,223,000
Total operating expenses	3,550,000	3,254,000	11,279,000	9,520,000
Loss from operations	(860,000)	(170,000)	(1,644,000)	(616,000)
Other income (expense):
Interest income	1,000		5,000	2,000
Interest expense	(30,000)	(50,000)	(93,000)	(156,000)
Interest expense, related parties	(10,000)	(15,000)	(38,000)	(45,000)
Change in fair value of warrant liability	84,000	(97,000)	719,000	(186,000)
Loss on debt extinguishment		(318,000)		(318,000)
Other income/(expense)	3,000	1,000	3,000	(1,000)
Net loss	$ (812,000)	$ (649,000)	$ (1,048,000)	$ (1,320,000)
Basic & diluted loss per share	$ (0.03)	$ (0.03)	$ (0.03)	$ (0.05)
Weighted average common shares outstanding
Basic & diluted	30,972,000	25,908,000	30,828,000	25,410,000