Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Statement [Abstract]
Revenue	$ 70	$ 409	$ 98	$ 1,365
Operating expenses
Cost of revenue	18	1,015	104	1,896
General and administrative	2,074	3,283	3,988	7,492
Restructuring charge		2,499		2,499
Sales and marketing				55
Research and development				47
Total operating expenses	2,092	6,797	4,092	11,989
Operating loss	(2,022)	(6,388)	(3,994)	(10,624)
Other non-operating income (expense)
Interest income (expense)	3
Accretion of debt discount	(2,731)	(117)	(3,822)	(117)
Warrant modification expense				(139)
Loss on sale of business unit				(127)
Gain (loss) on sale of property and equipment			82	(47)
Gain on extinguishment of debt	1,131		2,406
Total other non-operating income (expense)	(1,597)	(117)	(1,334)	(430)
Net loss	(3,619)	(6,505)	(5,328)	(11,054)
Deemed dividend	(959)		(959)	(2,514)
Net loss attributable to common stockholders	$ (4,578)	$ (6,505)	$ (6,287)	$ (13,568)
Per-share data
Basic and diluted loss per share	$ (0.02)	$ (0.10)	$ (0.04)	$ (0.22)
Weighted average number of common shares outstanding	210,625,579	65,781,192	166,758,828	62,649,062