Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Sales	$ 2,619		$ 3,827
Cost of sales	2,528		3,729
Gross profit	91		98
Operating expenses
General and administrative	1,533	11,716	9,320	18,363
Consulting	38	49	133	2,213
Research and development	45	38	641	557
Total operating expenses, net	1,616	11,803	10,094	21,133
Loss from operations	(1,525)	(11,803)	(9,996)	(21,133)
Other income (expense):
Interest income (expense), net	43	(47)	148	(362)
Other income (expense)	1	(116)	109	(113)
Total other income (expense)	44	(163)	257	(475)
Loss before income taxes	(1,481)	(11,966)	(9,739)	(21,608)
Income tax expense		(1)	(3)	(3)
Net loss	$ (1,481)	$ (11,967)	$ (9,742)	$ (21,611)
Net loss per share to common stockholders:
Basic and diluted (in dollars per share)	$ (0.02)	$ (0.18)	$ (0.14)	$ (0.33)
Weighted shares used in the computation of net loss per share:
Basic and diluted (in shares)	72,607,881	68,070,930	72,000,787	66,020,773