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, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Income Statement [Abstract]
Net Sales	$ 4,311	$ 7,051	$ 13,350	$ 20,943
Cost of goods sold	2,384	3,108	6,541	8,827
Gross margin	1,927	3,943	6,809	12,116
Operating expenses:
Research and development	1,429	1,482	4,248	4,109
Selling, general and administrative	1,656	2,101	5,901	6,490
Provision for business restructuring	214	0	214	0
Total operating expenses	3,299	3,583	10,363	10,599
Operating income(loss)	(1,372)	360	(3,554)	1,517
Non-operating income (expense):
Interest income	31	13	238	45
Interest expense	0	0	0	(2)
Foreign currency transaction gain (loss)	(32)	(178)	(68)	(244)
Total non-operating income (expense)	(1)	(165)	170	(201)
Income (loss) before income taxes	(1,373)	195	(3,384)	1,316
Income tax (expense) benefit	44	(65)	321	(255)
Net income (loss)	$ (1,329)	$ 130	$ (3,063)	$ 1,061
Basic earnings (loss) per share	$ (0.17)	$ 0.01	$ (0.38)	$ 0.12
Diluted earnings (loss) per share	$ (0.17)	$ 0.01	$ (0.38)	$ 0.11
Weighted-average basic shares	7,740	9,270	8,080	9,159
Weighted-average diluted shares	7,740	9,391	8,080	9,323