Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Statement [Abstract]
Revenue	$ 589	$ 515	$ 1,954	$ 1,215
Operating expenses
Cost of revenue	1,470	365	3,366	754
General and administrative	2,885	9,614	10,377	16,621
Restructuring charge			2,499
Impairment of property and equipment	3,668		3,668
Sales and marketing		29	55	212
Research and development		83	47	269
Total operating expenses	8,023	10,091	20,012	17,856
Operating loss	(7,434)	(9,576)	(18,058)	(16,641)
Other non-operating expenses
Interest expense	(339)	(1,133)	(456)	(1,371)
Warrant modification expense			(139)
Loss on sale of cybersecurity assets			(127)
Gain (loss) on sale of property and equipment		9	(47)	57
Inducement expense		(5,764)		(5,764)
Impairment/loss on sale of investments				(2,871)
Total other non-operating expenses	(339)	(6,888)	(769)	(9,949)
Net loss	(7,773)	(16,464)	(18,827)	(26,590)
Deemed dividend			(2,514)
Net loss attributable to common stockholders	(7,773)	(16,464)	21,341	(26,590)
Other comprehensive loss
Realized loss on sale of investments				66
Comprehensive loss	$ (7,773)	$ (16,464)	$ (21,341)	$ (26,524)
Per-share data
Basic and diluted loss per share	$ (0.11)	$ (0.43)	$ (0.32)	$ (0.77)
Weighted average number of common shares outstanding	72,013,925	38,628,092	65,804,987	34,434,638