Statements of Operations (USD $)	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Income Statement [Abstract]
Product sales	$ 21,094,801	$ 13,454,250	$ 17,643,151
Research and development under cooperative agreement	311,198	597,460	2,164,001
Total revenues	21,405,999	14,051,710	19,807,152
Cost of product sales	15,789,840	13,293,905	14,878,123
Cost of research and development under cooperative agreement	259,082	501,868	1,973,114
Gross Margin	5,357,077	255,937	2,955,915
Selling, general, and administrative	3,897,588	3,055,077	3,291,745
Income (loss) from operations	1,459,489	(2,799,140)	(335,830)
Other expense, net	(30,327)	(28,588)	(32,671)
Income (loss) before income tax	1,429,162	(2,827,728)	(368,501)
Income tax provision (benefit)	462,707	(1,305,700)	(322,766)
Net income (loss)	$ 966,455	$ (1,522,028)	$ (45,735)
Net income (loss) basic common share	$ 0.07	$ (0.12)	$ 0.00
Weighted average number of basic common shares outstanding	12,985,107	12,869,618	12,765,774
Net income (loss) per diluted common share	$ 0.07	$ (0.12)	$ 0.00
Weighted average number of diluted common shares outstanding	13,265,486	12,869,618	12,765,774