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, 2015	Mar. 31, 2014
Income Statement [Abstract]
Net Sales	$ 5,902	$ 4,819
Cost of goods sold	3,045	2,324
Gross margin	2,857	2,495
Operating expenses:
Research and development	1,098	1,149
Selling, general and administrative	1,537	1,689
Provision for business restructuring	0	13
Total operating expenses	2,635	2,851
Operating income (loss)	222	(356)
Non-operating income (expense):
Interest income	31	19
Foreign currency transaction gain (loss)	(195)	18
Total non-operating income (expense)	(164)	37
Income (loss) before income taxes	58	(319)
Income tax (expense) benefit	(9)	(24)
Net income (loss)	$ 49	$ (343)
Basic earnings (loss) per share	$ 0.01	$ (0.04)
Diluted earnings (loss) per share	$ 0.01	$ (0.04)
Weighted-average basic shares	7,863	7,788
Weighted-average diluted shares	8,045	7,788