CONSOLIDATED CONDENSED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (DEFICIT) - USD ($) $ in Thousands	Preferred stock [Member] Series D Convertible Preferred Stock [Member]	Preferred stock [Member] Series E Convertible Preferred Stock [Member]	Preferred stock [Member] Series F Convertible Preferred Stock [Member]	Common Stock [Member] B3D Note [Member]	Common Stock [Member]	Additional paid-in capital B3D Note [Member]	Additional paid-in capital	Accumulated deficit	Accumulated other comprehensive income (loss)	Total Company equity (deficit) B3D Note [Member]	Total Company equity (deficit)	Non-controlling interests	B3D Note [Member]	Total
Balance at Dec. 31, 2018	$ 4	$ 10			$ 6		$ 296,250	$ (286,913)	$ (251)		$ 9,106	$ 4,029		$ 13,135
Common Stock, Shares, Outstanding, Beginning Balance at Dec. 31, 2018					587,267
Preferred Stock, Shares Outstanding, Beginning Balance at Dec. 31, 2018	425,750	967,742
Issuance of Common Stock for repayment of debt and interest							817				817			817
Issuance of Common Stock for repayment of debt and interest (in shares)					59,847
Stock-based compensation							104				104			104
Net income (loss) for the period								(2,973)			(2,973)	129		(2,844)
Foreign currency translation									(21)		(21)			(21)
Distributions to noncontrolling interests												(166)		(166)
Balance at Mar. 31, 2019	$ 4	$ 10			$ 6		297,171	(289,886)	(272)		7,033	3,992		11,025
Common Stock, Shares, Outstanding, Ending Balance at Mar. 31, 2019					647,114
Preferred Stock, Shares Outstanding, Ending Balance at Mar. 31, 2019	425,750	967,742
Balance at Dec. 31, 2019		$ 10			$ 52		302,118	(308,136)	(283)		(6,239)	3,703		$ (2,536)
Common Stock, Shares, Outstanding, Beginning Balance at Dec. 31, 2019					5,157,390									5,157,390
Preferred Stock, Shares Outstanding, Beginning Balance at Dec. 31, 2019		977,865	8,996
Issuance of Stock for payment of interest on Note				$ 2		$ 418	63			$ 420	63		$ 420	$ 63
Issuance of Stock for payment of interest on Note (in shares)		10,123		236,077
Conversion of Stock and Notes into Common Stock				$ 14	$ 9	$ 1,321	(9)			$ 1,335			$ 1,335
Conversion of Stock and Notes into Common Stock (in shares)			(7,465)	1,430,647	930,326
Direct offerings of registered Common Stock					$ 82		4,176				4,258			4,258
Direct offerings of registered Common Stock (in shares)					8,210,239
Cashless Exercise of May 2018 Series A Warrants into Common Stock					$ 26		3,096				3,122			3,122
Cashless Exercise of May 2018 Series A Warrants into Common Stock (in shares)					2,578,455
Issuance of Common Stock for services					$ 1		134				135			135
Issuance of Common Stock for services (in shares)					58,333
Stock-based compensation							72				72			72
Net income (loss) for the period								(10,616)			(10,616)	(108)		(10,724)
Contributions from noncontrolling interests												117		117
Balance at Mar. 31, 2020		$ 10			$ 186		$ 311,389	$ (318,752)	$ (283)		$ (7,450)	$ 3,712		$ (3,738)
Common Stock, Shares, Outstanding, Ending Balance at Mar. 31, 2020					18,601,467									5,157,390
Preferred Stock, Shares Outstanding, Ending Balance at Mar. 31, 2020		987,988	1,531