Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Series 4 Convertible Preferred Stock	Series 5 Convertible Preferred Stock	Common Stock	Additional Paid-In Capital	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Non-Controlling Interest	Total
Balance at Dec. 31, 2018				$ 123,226	$ (695)	$ 26	$ (117,773)	$ 18	$ 4,802
Balance, Shares at Dec. 31, 2018	1		35,154		(1)
Stock options granted to employees and consultants for services				648					648
Preferred Shares issued for net cash proceeds of a public offering				10,814					10,814
Preferred Shares issued for net cash proceeds of a public offering, shares		12,000
Common shares issued for extinguishment of debt				384					384
Common shares issued for extinguishment of debt, Shares			3,842
Common shares issued for net proceeds from warrants exercised				46					46
Common shares issued for net proceeds from warrants exercised, Shares			306
Common shares issued for warrants exercised, Shares			27,741
Redemption of convertible Series 5 Preferred Stock, Shares		(10,062)	67,149
Common shares issued for extinguishment of liability				1,130					1,130
Common shares issued for extinguishment of liability, Shares			16,655
Common shares issued for services				242					242
Common shares issued for services, Shares			4,445
Cumulative Translation Adjustment						(8)			(8)
Net loss							(5,144)	(5)	(5,149)
Balance at Mar. 31, 2019				136,490	$ (695)	18	(122,917)	13	12,909
Balance, Shares at Mar. 31, 2019	1	1,938	155,292		(1)
Balance at Dec. 31, 2018				123,226	$ (695)	26	(117,773)	18	4,802
Balance, Shares at Dec. 31, 2018	1		35,154		(1)
Net loss									(10,380)
Balance at Jun. 30, 2019				140,516	$ (695)	57	(128,157)	22	11,743
Balance, Shares at Jun. 30, 2019	1	126	284,261		(1)
Balance at Mar. 31, 2019				136,490	$ (695)	18	(122,917)	13	12,909
Balance, Shares at Mar. 31, 2019	1	1,938	155,292		(1)
Stock options granted to employees and consultants for services				858					858
Common shares issued for extinguishment of debt				2,005					2,005
Common shares issued for extinguishment of debt, Shares			61,636
Common shares issued for warrants exercised, Shares			18,572
Redemption of convertible Series 5 Preferred Stock, Shares		(1,812)	12,093
Issuance of Locality Acquisition Shares				513					513
Issuance of Locality Acquisition Shares, shares			14,445
Issuance of GTX Acquisition Shares				650					650
Issuance of GTX Acquisition Shares, Shares			22,223
Cumulative Translation Adjustment						39			39
Net loss							(5,240)	9	(5,231)
Balance at Jun. 30, 2019				140,516	$ (695)	57	(128,157)	22	11,743
Balance, Shares at Jun. 30, 2019	1	126	284,261		(1)
Balance at Dec. 31, 2019			$ 4	158,383	$ (695)	96	(151,762)	26	6,048
Balance, Shares at Dec. 31, 2019	1	126	4,234,923		(1)
Stock options granted to employees and consultants for services				399					399
Common Shares issued for net cash proceeds of a public offering			$ 1	1,251					1,252
Common Shares issued for net cash proceeds of a public offering, shares			937,010
Common shares issued for extinguishment of debt			$ 2	4,192					4,194
Common shares issued for extinguishment of debt, Shares			1,896,557
Cumulative Translation Adjustment						(613)		(1)	(614)
Net loss							(6,158)	(10)	(6,168)
Balance at Mar. 31, 2020			$ 7	164,225	$ (695)	(517)	(157,920)	15	5,115
Balance, Shares at Mar. 31, 2020	1	126	7,068,490		(1)
Balance at Dec. 31, 2019			$ 4	158,383	$ (695)	96	(151,762)	26	6,048
Balance, Shares at Dec. 31, 2019	1	126	4,234,923		(1)
Net loss									(13,469)
Balance at Jun. 30, 2020			$ 40	209,789	$ (695)	(199)	(165,242)	34	43,727
Balance, Shares at Jun. 30, 2020	1	126	40,175,002		(1)
Balance at Mar. 31, 2020			$ 7	164,225	$ (695)	(517)	(157,920)	15	5,115
Balance, Shares at Mar. 31, 2020	1	126	7,068,490		(1)
Stock options granted to employees and consultants for services				286					286
Common and preferred shares issued for net cash proceeds from a public offering			$ 29	40,490					40,519
Common and preferred shares issued for net cash proceeds from a public offering, Shares			29,033,036
Common shares issued for extinguishment of debt			$ 4	4,588					4,592
Common shares issued for extinguishment of debt, Shares			3,889,990
Common shares issued for extinguishment of liability				200					200
Common shares issued for extinguishment of liability, Shares			183,486
Cumulative Translation Adjustment						318			318
Net loss							(7,322)	19	(7,304)
Balance at Jun. 30, 2020			$ 40	$ 209,789	$ (695)	$ (199)	$ (165,242)	$ 34	$ 43,727
Balance, Shares at Jun. 30, 2020	1	126	40,175,002		(1)