Calculation of Loss Per Share (Detail) (USD $)	3 Months Ended		6 Months Ended
	Sep. 28, 2012	Sep. 30, 2011	Sep. 28, 2012	Sep. 30, 2011
Basic and Diluted
Weighted Average Basic Shares Outstanding	31,161,000	30,827,000	31,161,000	30,756,000
Dilutive effect of Stock Options and Warrants
Weighted Average Diluted Shares Outstanding	31,161,000	30,827,000	31,161,000	30,756,000
Net income (loss)	$ (1,287,000)	$ (254,000)	$ (2,280,000)	$ (236,000)
Basic and Diluted income (loss) per share	$ (0.04)	$ (0.01)	$ (0.07)	$ (0.01)