Consolidated Statements of Income (USD $)	12 Months Ended
	Dec. 31, 2011	Jan. 01, 2011	Jan. 02, 2010
Consolidated Statements of Income [Abstract]
Net sales	$ 142,856,049	$ 130,130,360	$ 112,665,464
Cost of products sold	(115,504,443)	(103,458,137)	(92,031,078)
Gross margin	27,351,606	26,672,223	20,634,386
Selling and administrative expenses	(18,639,426)	(18,160,504)	(17,055,610)
Operating profit	8,712,180	8,511,719	3,578,776
Interest expense	(231,481)	(266,297)	(1,727,980)
Other income	26,230	2,996	50,733
Income before income taxes	8,506,929	8,248,418	1,901,529
Income taxes	3,001,999	2,705,413	865,122
Net income	$ 5,504,930	$ 5,543,005	$ 1,036,407
Earnings per Share:
Basic (in dollars per share)	$ 0.89	$ 0.91	$ 0.17
Diluted (in dollars per share)	$ 0.89	$ 0.90	$ 0.17