CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Statement [Abstract]
Net sales	$ 1,277	$ 2,816	$ 3,168	$ 4,947
Cost of revenues	1,228	1,546	2,439	2,759
Gross profit	49	1,270	729	2,188
Operating expenses
Depreciation and amortization expense	54	50	103	101
Research and development	329	421	754	781
Selling, general and administrative	1,228	918	2,010	1,775
Total operating expenses	1,611	1,389	2,867	2,657
Operating loss	(1,562)	(119)	(2,138)	(469)
Other expenses
Interest expense, net	67	139	260	400
Loss on extinguishment of notes due to employees			158	0
Other (income) expense, net	(8)	(50)	20	(39)
Total other expense, net	59	89	438	361
Loss before income taxes	(1,621)	(208)	(2,576)	(830)
Income tax provision (benefit)	4	(6)	4	(6)
Net loss	(1,625)	(202)	(2,580)	(824)
Preferred dividend	(23)	(23)	(46)	(46)
Net loss available to common stockholders	(1,648)	(225)	(2,626)	(870)
Condensed consolidated statements of comprehensive income (loss)
Net loss	(1,625)	(202)	(2,580)	(824)
Other comprehensive income (loss)
Foreign currency translation adjustments	212	(136)	159	55
Comprehensive loss	(1,413)	(338)	(2,421)	(769)
Loss per share
Net loss available to common stockholders	$ (1,648)	$ (225)	$ (2,626)	$ (870)
Basic and diluted loss per share	$ (0.06)	$ (0.01)	$ (0.11)	$ (0.04)
Weighted average basic and diluted shares outstanding	25,866,163	21,058,235	24,411,435	21,058,235