CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net sales	$ 4,105	$ 5,253	$ 13,130	$ 12,684
Cost of sales	2,694	3,214	8,528	8,088
Gross profit	1,411	2,039	4,602	4,596
Operating expenses:
Selling, general and administrative	1,320	1,454	4,163	4,302
Research and development	465	300	1,300	931
Total operating expenses	1,785	1,754	5,463	5,233
Operating (loss) income	(374)	285	(861)	(637)
Non-operating income (expense), net	47	335	493	617
Net (loss) income	$ (327)	$ 620	$ (368)	$ (20)
Basic (loss) income per common share (in dollars per share)	$ (0.01)	$ 0.03	$ (0.02)	$ 0.00
Diluted (loss) income per common share (in dollars per share)	$ (0.01)	$ 0.03	$ (0.02)	$ 0.00
Weighted average common shares outstanding - basic (in shares)	22,077	20,578	20,651	20,556
Weighted average common shares outstanding - assuming dilution (in shares)	22,077	22,641	20,651	20,556