Note 14 - Quarterly Financial Information (Unaudited) (Detail) - Quarterly Financial Information (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended																12 Months Ended
	Mar. 31, 2013		Dec. 23, 2012		Sep. 23, 2012		Jun. 24, 2012		Mar. 25, 2012		Dec. 25, 2011		Sep. 25, 2011		Jun. 26, 2011		Mar. 31, 2013	Mar. 25, 2012	Mar. 27, 2011
Total revenues	$ 14,976		$ 15,025		$ 21,360		$ 20,182		$ 14,407		$ 14,800		$ 19,118		$ 17,897		$ 71,543	$ 66,222	$ 57,255
Gross profit (a)	1,623	[1]	2,044	[1]	4,695	[1]	3,420	[1]	1,624	[1]	2,011	[1]	3,948	[1]	2,680	[1]
Net income	$ 1,555		$ 1,062		$ 2,845		$ 2,006		$ 1,082		$ 1,211		$ 2,269		$ 1,596		$ 7,468	$ 6,158	$ 2,213
Basic (b) (in Dollars per share)	$ 0.35	[2]	$ 0.24	[2]	$ 0.65	[2]	$ 0.46	[2]	$ 0.24	[2]	$ 0.24	[2]	$ 0.45	[2]	$ 0.31	[2]	$ 1.70	$ 1.26	$ 0.41
Diluted (b) (in Dollars per share)	$ 0.34	[2]	$ 0.23	[2]	$ 0.62	[2]	$ 0.44	[2]	$ 0.23	[2]	$ 0.24	[2]	$ 0.44	[2]	$ 0.31	[2]	$ 1.63	$ 1.22	$ 0.40
Basic (b) (in Shares)	4,411,000	[2]	4,414,000	[2]	4,407,000	[2]	4,368,000	[2]	4,559,000	[2]	4,964,000	[2]	5,025,000	[2]	5,078,000	[2]	4,400,000	4,906,000	5,403,000
Diluted (b) (in Shares)	4,603,000	[2]	4,612,000	[2]	4,604,000	[2]	4,531,000	[2]	4,720,000	[2]	5,113,000	[2]	5,163,000	[2]	5,201,000	[2]	4,588,000	5,049,000	5,504,000

[1] Gross profit represents the difference between sales and cost of sales.

[2] The sum of the quarters may not equal the full year per share amounts included in the accompanying consolidated statements of earnings due to the effect of the weighted average number of shares outstanding during the fiscal years as compared to the quarters.