Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets
Cash	$ 151	$ 1
Total current assets	151	1
Total assets	151	1
Current liabilities
Accounts payable	2,287	2,257
Due to related party	4	4
Accrued expenses	2,874	2,112
Accrued dividends	5,211	4,083
Term loan	5,677	5,677
Convertible notes payable, net	862	641
Derivative liability	3,475
Total current liabilities	20,390	14,774
Total liabilities	20,390	14,774
Commitments and contingencies (Note 7)
Stockholders’ deficit
Common stock, $0.006 par value; 180,000,000 shares authorized, 14,485,438 and 11,112,709 shares issued and outstanding as of September 30, 2021, and December 31, 2020, respectively	87	67
Additional paid-in capital	30,647	29,772
Accumulated deficit	(50,973)	(44,612)
Total stockholders’ deficit	(20,239)	(14,773)
Total liabilities and stockholders’ deficit	151	1
Series C Convertible Preferred Stock [Member]
Stockholders’ deficit
Preferred stock value
Series D Convertible Preferred Stock [Member]
Stockholders’ deficit
Preferred stock value
Series E Convertible Preferred Stock [Member]
Stockholders’ deficit
Preferred stock value
Series F Convertible Preferred Stock [Member]
Stockholders’ deficit
Preferred stock value
Series G Convertible Preferred Stock [Member]
Stockholders’ deficit
Preferred stock value