Note 9 - Income Per Share (Details) - Table of earnings per share reconciliation (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 29, 2013	Sep. 23, 2012	Sep. 29, 2013	Sep. 23, 2012
Table of earnings per share reconciliation [Abstract]
Basic calculation (in Dollars)	$ 2,648	$ 2,845	$ 6,002	$ 4,851
Basic calculation	4,460,000	4,407,000	4,437,000	4,387,000
Basic calculation (in Dollars per share)	$ 0.59	$ 0.65	$ 1.35	$ 1.11
Effect of dilutive employee stock options	165,000	197,000	166,000	181,000
Effect of dilutive employee stock options (in Dollars per share)	$ (0.02)	$ (0.03)	$ (0.05)	$ (0.05)
Diluted calculation (in Dollars)	$ 2,648	$ 2,845	$ 6,002	$ 4,851
Diluted calculation	4,625,000	4,604,000	4,603,000	4,568,000
Diluted calculation (in Dollars per share)	$ 0.57	$ 0.62	$ 1.30	$ 1.06