CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED (USD $)	3 Months Ended		6 Months Ended
	Jul. 02, 2011	Jul. 03, 2010	Jul. 02, 2011	Jul. 03, 2010
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED [Abstract]
Net sales	$ 35,520,182	$ 32,577,665	$ 68,708,794	$ 63,532,220
Cost of products sold	(28,588,070)	(25,679,320)	(55,460,341)	(50,574,900)
Gross margin	6,932,112	6,898,345	13,248,453	12,957,320
Selling and administrative expenses	(4,633,196)	(4,623,095)	(9,230,481)	(9,055,896)
Operating profit	2,298,916	2,275,250	4,017,972	3,901,424
Interest expense	(53,040)	(67,997)	(120,043)	(138,069)
Other income	3,071	397	9,516	491
Income before income taxes	2,248,947	2,207,650	3,907,445	3,763,846
Income taxes	766,148	796,781	1,326,472	1,343,317
Net income/(loss)	$ 1,482,799	$ 1,410,869	$ 2,580,973	$ 2,420,529
Basic	$ 0.24	$ 0.23	$ 0.42	$ 0.40
Diluted	$ 0.24	$ 0.23	$ 0.42	$ 0.39
Cash dividends per share:	$ 0.09	$ 0.09	$ 0.18	$ 0.18