CONSOLIDATED STATEMENTS OF OPERATIONS (in thousands, except per share amounts) (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Statement [Abstract]
Net Sales	$ 6,213	$ 5,357	$ 16,631	$ 15,387
Cost of goods sold	2,822	2,801	7,723	7,351
Gross margin	3,391	2,556	8,908	8,036
Operating expenses:
Research and development	1,217	1,109	3,539	3,430
Selling, general and administrative	1,444	1,367	4,588	4,959
Provision for business restructuring	0	1	13	642
Total operating expenses	2,661	2,477	8,140	9,031
Operating income (loss)	730	79	768	(995)
Non-operating income (expense):
Interest income	50	19	122	93
Foreign currency transaction gain (loss)	(139)	17	(113)	(42)
Total non-operating income (expense)	(89)	36	9	51
Income (loss) before income taxes	641	115	777	(944)
Income tax (expense) benefit	5	31	(27)	6
Net income (loss)	$ 646	$ 146	$ 750	$ (938)
Basic earnings (loss) per share	$ 0.08	$ 0.02	$ 0.10	$ (0.12)
Diluted earnings (loss) per share	$ 0.08	$ 0.02	$ 0.09	$ (0.12)
Weighted-average basic shares	7,846	7,773	7,816	7,761
Weighted-average diluted shares	7,980	7,819	7,922	7,761