Statements of Operations (USD $)	3 Months Ended
	Mar. 31, 2012	Apr. 02, 2011
Income Statement [Abstract]
Product sales	$ 3,342,653	$ 5,047,858
Research and development under cooperative agreement	212,123	792,487
Total revenues	3,554,776	5,840,345
Cost of product sales	3,405,575	4,219,865
Cost of research and development under cooperative agreement	183,041	764,420
Gross Margin	(33,840)	856,060
Selling, general, and administrative	808,723	816,946
Operating income (loss)	(842,563)	39,114
Other expense, net	(5,772)	(9,671)
Income (loss) before income tax	(848,335)	29,443
Income tax provision (benefit)	(314,000)	13,300
Net income (loss)	$ (534,335)	$ 16,143
Net income (loss) per basic common share	$ (0.04)	$ 0.00
Weighted average number of basic common shares outstanding	12,865,659	12,714,819
Net income ( loss) per diluted common share	$ (0.04)	$ 0.00
Weighted average number of diluted common shares outstanding	12,865,659	13,180,992