CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($)	3 Months Ended				9 Months Ended
	Oct. 03, 2015		Sep. 27, 2014		Oct. 03, 2015		Sep. 27, 2014
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) [Abstract]
Net sales	$ 36,239,500		$ 35,803,405		$ 110,154,039		$ 106,432,304
Cost of products sold	(27,205,657)		(27,161,932)		(85,872,857)		(82,501,121)
Gross margin	9,033,843		8,641,473		24,281,182		23,931,183
Selling and administrative expenses	(5,584,222)		(4,892,600)		(18,604,056)		(15,097,253)
Operating profit	3,449,621		3,748,873		5,677,126		8,833,930
Interest expense	(45,203)		(60,680)		(145,773)		(193,875)
Other income	6,573		14,030		33,540		37,996
Income before income taxes	3,410,991		3,702,223		5,564,893		8,678,051
Income taxes	883,269		1,270,406		1,578,626		3,049,846
Net income	$ 2,527,722		$ 2,431,817		$ 3,986,267		$ 5,628,205
Earnings per Share:
Basic (in dollars per share)	$ 0.41		$ 0.39		$ 0.64		$ 0.90
Diluted (in dollars per share)	0.41		0.39		0.64		0.90
Cash dividends per share: (in dollars per share)	$ 0.12	[1]	$ 0.15	[2]	$ 0.34	[1]	$ 0.37	[2]

[1] Includes $ 0.01 per share redemption for the termination of the 2008 Shareholder Rights Agreement.

[2] The Company paid an additional one-time dividend of $0.04 per share in the third quarter of 2014.