CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current Assets:
Accounts receivable, net of allowance for doubtful accounts	$ 5	$ 5
Shareholders' deficit:
Common stock, par value	$ .01	$ 0.01
Common stock, shares authorized	2,000,000,000	2,000,000,000
Common stock, shares issued	276,749,448	180,096,317
Common stock, shares outstanding	276,742,744	180,089,613
Treasury stock, shares	6,704	6,704
Mezzanine Preferred Stock
Shareholders' deficit:
Preferred stock, par value	$ .01	$ 0.01
Preferred stock, shares authorized	26,000	26,000
Preferred stock, shares issued	23,111	22,863
Preferred stock, shares outstanding	22,757	22,863
Preferred stock, liquidation preference	$ 22,757	$ 22,863
Series A Preferred Stock
Shareholders' deficit:
Preferred stock, par value	$ .01	$ 0.01
Preferred stock, shares authorized	38,000	38,000
Preferred stock, shares issued	37,467	37,467
Preferred stock, shares outstanding	6,149	14,911
Preferred stock, liquidation preference	$ 6,149	$ 14,911
Series A-1 Preferred Stock
Shareholders' deficit:
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	38,000	38,000
Preferred stock, shares issued	37,467	37,467
Preferred stock, shares outstanding	5,922	14,782
Preferred stock, liquidation preference	$ 5,922	$ 14,782
Series B Preferred Stock
Shareholders' deficit:
Preferred stock, par value	$ .01	$ .01
Preferred stock, shares authorized	750,000	750,000
Preferred stock, shares issued	389,400	389,400
Preferred stock, shares outstanding	239,400	239,400
Preferred stock, liquidation preference	$ 620	$ 607