Consolidated Statements of Income - USD ($)	3 Months Ended		9 Months Ended
	Dec. 27, 2015	Dec. 28, 2014	Dec. 27, 2015	Dec. 28, 2014
Consolidated Statements of Income [Abstract]
Revenues	$ 139,510,700	$ 135,188,700	$ 416,528,000	$ 436,656,800
Cost of goods sold	110,057,300	106,367,800	327,581,000	343,330,100
Gross profit	29,453,400	28,820,900	88,947,000	93,326,700
Selling, general and administrative expenses	24,742,400	26,136,800	76,730,200	78,703,600
Income from operations	4,711,000	2,684,100	12,216,800	14,623,100
Interest expense, net	55,500	61,300	148,900	139,100
Income before provision for income taxes	4,655,500	2,622,800	12,067,900	14,484,000
Provision for income taxes	1,768,800	941,600	4,737,600	5,617,800
Net income	$ 2,886,700	$ 1,681,200	$ 7,330,300	$ 8,866,200
Basic earnings per share (in dollars per share)	$ 0.35	$ 0.20	$ 0.89	$ 1.07
Diluted earnings per share (in dollars per share)	0.35	0.20	0.89	1.06
Cash dividends declared per common share (in dollars per share)	$ 0.20	$ 0.20	$ 0.60	$ 0.60