Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Consolidated Statements of Comprehensive Loss
Revenues	$ 39,738	$ 41,231
Cost of revenues	28,846	28,778
Gross profit	10,892	12,453
Operating expenses:
Selling, general and administrative	11,903	12,374
Research and development	7,826	6,538
Severance and other charges	1,482	1,166
Total operating expenses	21,211	20,078
Loss from continuing operations	(10,319)	(7,625)
Other income (expense):
Interest expense, net	(1,166)	(1,176)
Other income (expense), net	2,664	(174)
Total other income (expense)	1,498	(1,350)
Loss from continuing operations before income taxes	(8,821)	(8,975)
Income tax expense (benefit) from continuing operations	(399)	138
Net loss from continuing operations	(8,422)	(9,113)
Net loss from discontinued operations	(112)	(223)
Net loss	(8,534)	(9,336)
Foreign currency translation adjustments	(2,522)	(1,829)
Comprehensive loss	$ (11,056)	$ (11,165)
Basic and diluted net loss per share:
Net loss from continuing operations (in dollars per share)	$ (0.53)	$ (0.76)
Net loss from discontinued operations (in dollars per share)	(0.01)	(0.02)
Net loss (in dollars per share)	$ (0.54)	$ (0.78)
Weighted-average number of common shares outstanding - basic and diluted (in shares)	15,753	12,005