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, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income Statement [Abstract]
Net Sales	$ 5,599	$ 5,271	$ 10,418	$ 10,029
Cost of goods sold	2,577	2,332	4,901	4,549
Gross margin	3,022	2,939	5,517	5,480
Operating expenses:
Research and development	1,173	1,117	2,323	2,321
Selling, general and administrative	1,456	1,785	3,144	3,592
Provision for business restructuring	0	642	13	642
Total operating expenses	2,629	3,544	5,480	6,555
Operating income(loss)	393	(605)	37	(1,075)
Non-operating income (expense):
Interest income	53	56	72	74
Foreign currency transaction gain (loss)	8	(55)	27	(57)
Total non-operating income (expense)	61	1	99	17
Income (loss) before income taxes	454	(604)	136	(1,058)
Income tax (expense) benefit	(7)	(20)	(32)	(25)
Net income (loss)	$ 447	$ (624)	$ 104	$ (1,083)
Basic earnings (loss) per share	$ 0.06	$ (0.08)	$ 0.01	$ (0.14)
Diluted earnings (loss) per share	$ 0.06	$ (0.08)	$ 0.01	$ (0.14)
Weighted-average basic shares	7,814	7,762	7,801	7,756
Weighted-average diluted shares	7,899	7,762	7,892	7,756