Unaudited Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended		9 Months Ended
	Dec. 30, 2012	Dec. 25, 2011	Dec. 30, 2012	Dec. 25, 2011
Unaudited Consolidated Statements of Comprehensive Income [Abstract]
Revenues	$ 204,458,700	$ 226,250,100	$ 594,115,200	$ 538,602,500
Cost of goods sold	165,488,900	186,773,300	481,027,200	427,935,400
Gross profit	38,969,800	39,476,800	113,088,000	110,667,100
Selling, general and administrative expenses	30,226,300	31,596,300	88,675,700	89,431,300
Income from operations	8,743,500	7,880,500	24,412,300	21,235,800
Interest, net	13,700	73,500	83,100	251,900
Income before provision for income taxes	8,729,800	7,807,000	24,329,200	20,983,900
Provision for income taxes	3,331,100	3,033,400	9,455,100	8,095,900
Net income	5,398,700	4,773,600	14,874,100	12,888,000
Basic earnings per share (in dollars per share)	$ 0.67	$ 0.61	$ 1.86	$ 1.67
Diluted earnings per share (in dollars per share)	$ 0.65	$ 0.59	$ 1.80	$ 1.60
Cash dividends declared per common share (in dollars per share)	$ 0.93	$ 0.15	$ 1.29	$ 0.40
Comprehensive income	$ 5,398,700	$ 4,773,600	$ 14,874,100	$ 12,912,600