Unaudited Consolidated Statements of Income (USD $)	3 Months Ended
	Jun. 30, 2013	Jul. 01, 2012
Unaudited Consolidated Statements of Income [Abstract]
Revenues	$ 144,108,800	$ 192,418,200
Cost of goods sold	108,670,900	156,925,000
Gross profit	35,437,900	35,493,200
Selling, general and administrative expenses	28,474,100	28,562,400
Income from operations	6,963,800	6,930,800
Interest, net	54,600	57,400
Income before provision for income taxes	6,909,200	6,873,400
Provision for income taxes	2,617,000	2,666,900
Net income	$ 4,292,200	$ 4,206,500
Basic earnings per share (in dollars per share)	$ 0.53	$ 0.53
Diluted earnings per share (in dollars per share)	$ 0.51	$ 0.51
Cash dividends declared per common share (in dollars per share)	$ 0.18	$ 0.18