Condensed Consolidated Statements of Operations and Comprehensive Loss (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Statements of Operations [Abstract]
Net sales	$ 3,343	$ 3,318
Cost of sales (excludes amortization of acquired intangibles)	1,420	1,521
Gross profit	1,923	1,797
Operating expenses
Research and development	1,348	754
Selling, general and administrative	5,621	5,310
Amortization	154
Loss on asset impairment	5
Total operating expenses	7,128	6,064
Operating loss	(5,205)	(4,267)
Other income (expense):
Interest income	2	4
Interest expense	(4)
Total other income (expense)	(2)	4
Loss before income taxes	(5,207)	(4,263)
Income tax benefit	748
Net loss and comprehensive loss	$ (4,459)	$ (4,263)
Net loss per share attributable to common shareholders:
Basic and diluted	$ (1.56)	$ (1.93)
Weighted average number of common shares outstanding:
Basic and diluted	2,853	2,213