Unaudited Consolidated Statements of Income (USD $)	3 Months Ended		6 Months Ended
	Sep. 25, 2011	Sep. 26, 2010	Sep. 25, 2011	Sep. 26, 2010
Unaudited Consolidated Statements of Income [Abstract]
Revenues	$ 148,837,400	$ 165,026,400	$ 312,352,400	$ 306,979,000
Cost of goods sold	114,847,500	128,256,400	241,162,100	237,859,200
Gross profit	33,989,900	36,770,000	71,190,300	69,119,800
Selling, general and administrative expenses	28,159,900	31,203,600	57,835,000	60,115,300
Income from operations	5,830,000	5,566,400	13,355,300	9,004,500
Interest, net	72,900	129,800	178,400	207,600
Income before provision for income taxes	5,757,100	5,436,600	13,176,900	8,796,900
Provision for income taxes	2,216,900	2,090,900	5,062,500	3,381,700
Net income	$ 3,540,200	$ 3,345,700	$ 8,114,400	$ 5,415,200
Basic earnings per share (in dollars per share)	$ 0.46	$ 0.44	$ 1.05	$ 0.72
Diluted earnings per share (in dollars per share)	$ 0.44	$ 0.43	$ 1.01	$ 0.69
Cash dividends declared per common share (in dollars per share)	$ 0.15	$ 0.10	$ 0.25	$ 0.20