CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Net sales	$ 4,615	$ 3,849	$ 9,025	$ 7,431
Cost of sales	3,125	2,497	5,834	4,874
Gross profit	1,490	1,352	3,191	2,557
Operating expenses:
Selling, general and administrative	1,409	1,431	2,843	2,848
Research and development	368	314	835	631
Total operating expenses	1,777	1,745	3,678	3,479
Operating loss	(287)	(393)	(487)	(922)
Non-operating income (expense), net	303	81	446	282
Net income (loss)	$ 16	$ (312)	$ (41)	$ (640)
Basic (loss) income per common share - basic and diluted (in dollars per share)	$ 0.00	$ (0.02)	$ 0.00	$ (0.03)
Weighted average common shares outstanding - basic and diluted (in Share)	21,567	20,578	20,637	20,545