CONSOLIDATED STATEMENTS OF OPERATIONS (in thousands, except per share amounts) (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Income Statement [Abstract]
Net Sales	$ 5,360	$ 6,849	$ 9,039	$ 13,892
Cost of goods sold	2,419	2,841	4,157	5,720
Gross margin	2,941	4,008	4,882	8,172
Operating expenses:
Research and development	1,427	1,276	2,819	2,627
Selling, general and administrative	1,996	2,215	4,245	4,388
Total operating expenses	3,423	3,491	7,064	7,015
Operating income(loss)	(482)	517	(2,182)	1,157
Non-operating income (expense):
Interest income	174	19	207	32
Interest expense	0	(1)	0	(2)
Foreign currency transaction gain (loss)	(45)	(32)	(36)	(66)
Total non-operating income (expense)	129	(14)	171	(36)
Income (loss) before income taxes	(353)	503	(2,011)	1,121
Income tax (expense) benefit	296	(105)	276	(191)
Net income (loss)	$ (57)	$ 398	$ (1,735)	$ 930
Basic earnings per share	$ (0.01)	$ 0.04	$ (0.21)	$ 0.10
Diluted earnings per share	$ (0.01)	$ 0.04	$ (0.21)	$ 0.10
Weighted-average basic shares	7,734	9,176	8,250	9,103
Weighted-average diluted shares	7,734	9,343	8,250	9,289