Statements of Operations - USD ($)	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Revenues:
Product sales	$ 21,719,427	$ 22,948,993	$ 21,094,801
Research and development under cooperative agreement	42,254	188,597	311,198
Total revenues	21,761,681	23,137,590	21,405,999
Cost of product sales	17,061,720	17,510,556	15,789,840
Cost of research and development under cooperative agreement	34,970	156,224	259,082
Gross Margin	4,664,991	5,470,810	5,357,077
Selling, general, and administrative	4,045,834	4,254,977	3,897,588
Income from operations	619,157	1,215,833	1,459,489
Other income (expense)	5,694	5,083	(30,327)
Income before income tax	624,851	1,220,916	1,429,162
Income tax provision	174,232	218,148	462,707
Net income	$ 450,619	$ 1,002,768	$ 966,455
Net income per basic common share	$ 0.03	$ 0.08	$ 0.07
Weighted average number of basic common shares outstanding	13,180,428	13,096,183	12,985,107
Net income per diluted common share	$ 0.03	$ 0.07	$ 0.07
Weighted average number of diluted common shares outstanding	13,639,074	13,703,005	13,265,486