Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Current assets
Cash	$ 42	$ 1
Total current assets	42	1
Total assets	42	1
Current liabilities
Accounts payable	2,280	2,257
Due to related party	4	4
Accrued expenses	2,671	2,112
Accrued dividends	4,830	4,083
Term loan	5,677	5,677
Convertible notes payable, net	817	641
Derivative liability	103
Total current liabilities	16,382	14,774
Total liabilities	16,382	14,774
Commitments and contingencies (Note 7)
Stockholders’ deficit
Common stock, $0.006 par value; 180,000,000 shares authorized, 11,785,290 and 11,112,709 shares issued and outstanding as of June 30, 2021, and December 31, 2020, respectively	71	67
Additional paid-in capital	30,417	29,772
Accumulated deficit	(46,828)	(44,612)
Total stockholders’ deficit	(16,340)	(14,773)
Total liabilities and stockholders’ deficit	42	1
Series C Convertible Preferred Stock [Member]
Stockholders’ deficit
Series G convertible preferred stock, $0.01 par value, 6,000 shares designated; zero shares outstanding as of June 30, 2021, and December 31, 2020.
Series D Convertible Preferred Stock [Member]
Stockholders’ deficit
Series G convertible preferred stock, $0.01 par value, 6,000 shares designated; zero shares outstanding as of June 30, 2021, and December 31, 2020.
Series E Convertible Preferred Stock [Member]
Stockholders’ deficit
Series G convertible preferred stock, $0.01 par value, 6,000 shares designated; zero shares outstanding as of June 30, 2021, and December 31, 2020.
Series F Convertible Preferred Stock [Member]
Stockholders’ deficit
Series G convertible preferred stock, $0.01 par value, 6,000 shares designated; zero shares outstanding as of June 30, 2021, and December 31, 2020.
Series G Convertible Preferred Stock [Member]
Stockholders’ deficit
Series G convertible preferred stock, $0.01 par value, 6,000 shares designated; zero shares outstanding as of June 30, 2021, and December 31, 2020.