Annual report pursuant to Section 13 and 15(d)

DEBT - Series C Convertible Debentures (Details)

v3.21.1
DEBT - Series C Convertible Debentures (Details) - USD ($)
$ in Thousands
12 Months Ended
Oct. 31, 2018
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Debt Instrument [Line Items]        
Loss on debt extinguishment   $ 2,360 $ 3,374 [1]  
Series C Financing | Series C Convertible Debentures | Private Placement        
Debt Instrument [Line Items]        
Debt instrument, face amount $ 18,000      
Debt instrument, convertible, conversion price, discount, percentage 20.00%      
Debt instrument, convertible, conversion price, discount subject to penalty date, percentage 30.00%      
Derivative instrument liability $ 3,900     $ 4,400
Derivative liability, redemption feature probability 80.00%      
Embedded derivative, carrying value $ 14,000      
Series C Financing | Series C Convertible Debentures | Minimum | Private Placement        
Debt Instrument [Line Items]        
Debt instrument, qualified financing, gross proceeds 5,000      
Series C Preferred Stock | Preferred Shares | Series D Financing        
Debt Instrument [Line Items]        
Embedded derivative, carrying value     4,475  
Conversion $ 17,890      
Conversion (in shares) 2,546,670      
Interest expense, debt     300  
Loss on debt extinguishment     3,374  
Embedded derivative, loss on embedded derivative     $ 133  
[1] See Note 3. for information on the reclassification adjustment of December 31, 2019.