Note K - Share-based Compensation (Details) - Compensation Cost Charged to Expense under All Stock-based Incentive Awards (USD $)	3 Months Ended		6 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 28, 2014	Sep. 29, 2013
Note K - Share-based Compensation (Details) - Compensation Cost Charged to Expense under All Stock-based Incentive Awards [Line Items]
Share-based Compensation Expense	$ 210,000	$ 191,000	$ 401,000	$ 338,000
Employee Stock Option [Member]
Note K - Share-based Compensation (Details) - Compensation Cost Charged to Expense under All Stock-based Incentive Awards [Line Items]
Share-based Compensation Expense	75,000	56,000	131,000	112,000
Restricted Stock [Member]
Note K - Share-based Compensation (Details) - Compensation Cost Charged to Expense under All Stock-based Incentive Awards [Line Items]
Share-based Compensation Expense	$ 135,000	$ 135,000	$ 270,000	$ 226,000