CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($)	3 Months Ended		6 Months Ended
	Jul. 04, 2015	Jun. 28, 2014	Jul. 04, 2015	Jun. 28, 2014
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) [Abstract]
Net sales	$ 37,037,697	$ 34,779,773	$ 73,914,539	$ 70,628,899
Cost of products sold	(29,125,536)	(27,003,469)	(58,667,200)	(55,339,189)
Gross margin	7,912,161	7,776,304	15,247,339	15,289,710
Selling and administrative expenses	(7,056,139)	(4,988,364)	(13,019,834)	(10,204,653)
Operating profit	856,022	2,787,940	2,227,505	5,085,057
Interest expense	(47,745)	(64,626)	(100,570)	(133,195)
Other income	19,960	16,683	26,967	23,966
Income before income taxes	828,237	2,739,997	2,153,902	4,975,828
Income taxes	243,643	1,046,494	695,357	1,779,440
Net income	$ 584,594	$ 1,693,503	$ 1,458,545	$ 3,196,388
Earnings per Share:
Basic (in dollars per share)	$ 0.09	$ 0.27	$ 0.23	$ 0.51
Diluted (in dollars per share)	0.09	0.27	0.23	0.51
Cash dividends per share: (in dollars per share)	$ 0.11	$ 0.11	$ 0.22	$ 0.22