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, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Income Statement [Abstract]
Net Sales	$ 5,357	$ 4,311	$ 15,387	$ 13,350
Cost of goods sold	2,801	2,384	7,351	6,541
Gross margin	2,556	1,927	8,036	6,809
Operating expenses:
Research and development	1,109	1,429	3,430	4,248
Selling, general and administrative	1,367	1,656	4,959	5,901
Provision for business restructuring	1	214	642	214
Total operating expenses	2,477	3,299	9,031	10,363
Operating income(loss)	79	(1,372)	(995)	(3,554)
Non-operating income (expense):
Interest income	19	31	93	238
Foreign currency transaction gain (loss)	17	(32)	(42)	(68)
Total non-operating income (expense)	36	(1)	51	170
Income (loss) before income taxes	115	(1,373)	(944)	(3,384)
Income tax (expense) benefit	31	44	6	321
Net income (loss)	$ 146	$ (1,329)	$ (938)	$ (3,063)
Basic earnings (loss) per share	$ 0.02	$ (0.17)	$ (0.12)	$ (0.38)
Diluted earnings (loss) per share	$ 0.02	$ (0.17)	$ (0.12)	$ (0.38)
Weighted-average basic shares	7,773	7,740	7,761	8,080
Weighted-average diluted shares	7,819	7,740	7,761	8,080