CONSOLIDATED STATEMENTS OF OPERATIONS (in thousands, except per share amounts) (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Income Statement [Abstract]
Net Sales	$ 4,819	$ 4,759
Cost of goods sold	2,324	2,218
Gross margin	2,495	2,541
Operating expenses:
Research and development	1,149	1,205
Selling, general and administrative	1,689	1,806
Provision for business restructuring	13	0
Total operating expenses	2,851	3,011
Operating income(loss)	(356)	(470)
Non-operating income (expense):
Interest income	19	18
Foreign currency transaction gain (loss)	18	(3)
Total non-operating income (expense)	37	15
Income (loss) before income taxes	(319)	(455)
Income tax (expense) benefit	(24)	(4)
Net income (loss)	$ (343)	$ (459)
Basic earnings (loss) per share	$ (0.04)	$ (0.06)
Diluted earnings (loss) per share	$ (0.04)	$ (0.06)
Weighted-average basic shares	7,788	7,749
Weighted-average diluted shares	7,788	7,749