Note O - Quarterly Financial Information (Unaudited) (Details Textual) (USD $)	3 Months Ended																12 Months Ended
	Mar. 29, 2015		Dec. 28, 2014		Sep. 28, 2014		Jun. 29, 2014		Mar. 30, 2014		Dec. 29, 2013		Sep. 29, 2013		Jun. 30, 2013		Mar. 29, 2015	Mar. 30, 2014	Mar. 31, 2013
Earnings Per Share, Diluted	$ 0.34	[1]	$ 0.49	[1]	$ 0.84	[1]	$ 0.89	[1]	$ 0.27	[1]	$ 0.24	[1]	$ 0.57	[1]	$ 0.73	[1]	$ 2.55	$ 1.81	$ 1.63
Weighted Average Number of Shares Outstanding, Diluted	4,562,000	[1]	4,603,000	[1]	4,593,000	[1]	4,593,000	[1]	4,594,000	[1]	4,622,000	[1]	4,625,000	[1]	4,588,000	[1]	4,588,000	4,605,000	4,588,000
Earnings Per Share if Replacement Options had been Issued [Member]
Earnings Per Share, Diluted	$ 0.34																$ 2.53
Weighted Average Number of Shares Outstanding, Diluted	4,576,000																4,621,000

[1] 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.