Unaudited Consolidated Statements of Income (USD $)	3 Months Ended
	Jun. 29, 2014	Jun. 30, 2013
Unaudited Consolidated Statements of Income [Abstract]
Revenues	$ 152,946,300	$ 144,108,800
Cost of goods sold	117,697,500	108,670,900
Gross profit	35,248,800	35,437,900
Selling, general and administrative expenses	29,176,400	28,474,100
Income from operations	6,072,400	6,963,800
Interest, net	28,400	54,600
Income before provision for income taxes	6,044,000	6,909,200
Provision for income taxes	2,372,600	2,617,000
Net income	$ 3,671,400	$ 4,292,200
Basic earnings per share (in dollars per share)	$ 0.44	$ 0.53
Diluted earnings per share (in dollars per share)	$ 0.44	$ 0.51
Cash dividends declared per common share (in dollars per share)	$ 0.20	$ 0.18