CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) (USD $)	3 Months Ended
	Mar. 29, 2014	Mar. 30, 2013
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) [Abstract]
Net sales	$ 35,849,126	$ 34,692,174
Cost of products sold	(28,335,720)	(28,425,594)
Gross margin	7,513,406	6,266,580
Selling and administrative expenses	(5,216,289)	(4,681,296)
Operating profit	2,297,117	1,585,284
Interest expense	(68,569)	(86,076)
Other income	7,283	8,588
Income before income taxes	2,235,831	1,507,796
Income taxes	732,946	502,548
Net income	$ 1,502,885	$ 1,005,248
Earnings per share:
Basic (in dollars per share)	$ 0.24	$ 0.16
Diluted (in dollars per share)	$ 0.24	$ 0.16
Cash dividends per share: (in dollars per share)	$ 0.11	$ 0.10