Note 2 - Stock Based Compensation (Tables)

6 Months Ended

Sep. 26, 2014

Note 2 - Stock Based Compensation (Tables) [Line Items]

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

	Number of Options Outstanding			Weighted Average Exercise Price per		Number of Shares Exercisable		Weighted Average Exercise Price per
	(000’s)			Share		(000’s)		Share
Balance as of March 31, 2013		2,392		$	1.66		2,142	$	1.76
Granted		24		$	0.48
Exercised		--		$	--
Expired or forfeited		(114	)	$	1.03
Balance as of June 28, 2013		2,302		$	1.68		2,099	$	1.76
Granted		--		$	--
Exercised		(4	)	$	0.44
Expired or forfeited		(19	)	$	1.80
Balance as of September 27, 2013		2,279		$	1.68		2,117	$	1.75

	Number of Options Outstanding			Weighted Average Exercise Price per		Number of Shares Exercisable		Weighted Average Exercise Price per
	(000’s)			Share		(000’s)		Share
Balance as of March 31, 2014		2,171		$	1.66		2,017	$	1.75
Granted		--		$	--
Exercised		--		$	--
Expired or forfeited		(36	)	$	2.09
Balance as of June 27, 2014		2,135		$	1.68		2,031	$	1.70
Granted		--		$	--
Exercised		--		$	--
Expired or forfeited		(16	)	$	1.39
Balance as of September 26, 2014		2,119		$	1.66		2,055	$	1.69
Vested & expected to Vest, September 26, 2014		2,103		$	1.67

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

			Options Outstanding
Price Range			Shares (in 000s)		Weighted Average Exercise Price		Weighted Average Remaining Life
$0.44	-	$1.25		521		$0.71		7.00
$1.26	-	$2.50		1,348		$1.81		2.69
$2.51	-	$5.34		250		$2.83		0.92

			Options Exercisable
Price Range			Shares (in 000s)		Weighted Average Exercise Price		Weighted Average Remaining Life
$0.44	-	$1.25		457	$	0.69		6.96
$1.26	-	$2.50		1,348	$	1.81		2.69
$2.51	-	$5.34		250	$	2.83		0.92

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

	Three months ended				Six months ended
	September 26, 2014		September 27, 2013		September 26, 2014		September 27, 2013
Cost of Products Sold	$	2,000	$	2,000	$	3,000	$	4,000
Research, development & engineering expense		3,000		7,000		7,000		12,000
General and Administrative expense		10,000		24,000		23,000		39,000
Sales and Marketing expense		1,000		8,000		4,000		15,000
Total Stock Based Compensation	$	16,000	$	41,000	$	37,000	$	70,000

Restricted Stock [Member]

Note 2 - Stock Based Compensation (Tables) [Line Items]

Schedule of Nonvested Share Activity [Table Text Block]

	Shares (000’s)			Weighted Average Grant Date Fair Value Per Share
Unvested, March 31, 2013		128		$	0.87
Granted		40		$	0.48
Vested		--		$	--
Expired or forfeited		(1	)	$	0.76
Unvested, June 28, 2013		167		$	0.78
Granted		50		$	0.66
Vested		(26	)	$	0.89
Expired or forfeited		(7	)	$	0.95
Unvested, September 27, 2013		184		$	0.72

	Shares (000’s)			Weighted Average Grant Date Fair Value Per Share
Unvested, March 31, 2014		84		$	0.76
Granted		--		$	--
Vested		--		$	--
Expired or forfeited		(16	)	$	0.50
Unvested, June 27, 2014		68		$	0.83
Granted		--		$	--
Vested		(25	)	$	0.95
Expired or forfeited		--		$	--
Unvested, September 26, 2014		43		$	0.75