CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) (USD $)	3 Months Ended		9 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Sep. 29, 2012	Oct. 01, 2011
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) [Abstract]
Net sales	$ 39,644,050	$ 36,089,946	$ 121,699,533	$ 104,798,740
Cost of products sold	(31,478,557)	(29,533,528)	(96,104,184)	(84,993,869)
Gross margin	8,165,493	6,556,418	25,595,349	19,804,871
Selling and administrative expenses	(4,830,971)	(4,429,312)	(14,947,179)	(13,659,793)
Operating profit	3,334,522	2,127,106	10,648,170	6,145,078
Interest expense	(93,238)	(53,643)	(281,142)	(173,686)
Other income	3,462	8,012	14,185	17,528
Income before income taxes	3,244,746	2,081,475	10,381,213	5,988,920
Income taxes	1,020,771	621,534	3,479,284	1,948,006
Net income	$ 2,223,975	$ 1,459,941	$ 6,901,929	$ 4,040,914
Earnings per Share:
Basic (in dollars per share)	$ 0.36	$ 0.24	$ 1.11	$ 0.66
Diluted (in dollars per share)	$ 0.36	$ 0.24	$ 1.11	$ 0.65
Cash dividends per share (in dollars per share)	$ 0.10	$ 0.09	$ 0.30	$ 0.27