Annual report pursuant to Section 13 and 15(d)

DEBT - Series E Convertible Debentures (Details)

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DEBT - Series E Convertible Debentures (Details) - USD ($)
1 Months Ended 12 Months Ended
Jul. 31, 2020
Dec. 31, 2020
[2]
Dec. 31, 2019
Debt Instrument [Line Items]      
Loss on debt extinguishment [1]   $ 2,360,000 $ 3,374,000
Loss on fair value of derivative instrument [1]   $ 657,000 $ 421,000
Series E Convertible Debenture | Series E Financing      
Debt Instrument [Line Items]      
Debt instrument, face amount $ 4,162,000    
Interest rate 8.00%    
Election to convert accrued and unpaid interest to common stock (USD per share) $ 5.95    
Accrued and unpaid interest to common stock, redemption feature 70.00%    
Percentage ownership following redemption feature 50.00%    
Debt issuance costs, net $ 181,000    
Future conversion price, discount, redemption feature 30.00%    
Derivative instrument liability $ 1,705,000    
Derivative liability, redemption feature probability 90.00%    
Embedded derivative, carrying value $ 2,457,000    
Loss on debt extinguishment 1,705,000    
Loss on fair value of derivative instrument $ 85,000    
Series E Convertible Debenture | Series E Financing | Class A      
Debt Instrument [Line Items]      
Convertible, conversion price (dollars per share) $ 2.303    
Debt conversion, converted instrument, amount $ 5,950,000    
[1] See Note 3. for information on the restatement adjustment as of December 31, 2020 and on the reclassification adjustment as of December 31, 2019.
[2] See Note 3. for information on the restatement adjustment as of December 31, 2020.