Quarterly report pursuant to Section 13 or 15(d)

Borrowings - Convertible Promissory Note (Details)

v3.21.2
Borrowings - Convertible Promissory Note (Details)
3 Months Ended 9 Months Ended
Sep. 30, 2021
USD ($)
$ / shares
shares
Sep. 30, 2020
USD ($)
Sep. 30, 2021
USD ($)
D
$ / shares
shares
Sep. 30, 2020
USD ($)
Dec. 31, 2020
USD ($)
[1]
May 03, 2020
USD ($)
Apr. 29, 2020
USD ($)
Mar. 30, 2020
$ / shares
shares
Deemed dividend from warrant repricing $ 0 $ 0 $ 0 $ 134,000        
Debt outstanding $ 0   0   $ 668,000      
Payroll Protection Program Note Agreement                
Principal amount of debt           $ 847,000    
Debt Instrument, Interest Rate, Stated Percentage           1.00%    
Gain on extinguishment of debt     $ 859,000          
Convertible debt | March 2020 Private Placement                
Period of execution of funding agreement     60 days          
Period to enter into an underwriting agreement     45 days          
Threshold period for conversion of notes     45 days          
Percentage of average of lowest daily VWAPs     90.00%          
Number of lowest daily VWAPs | $ / shares     $ 5          
Number of trading days for lowest daily VWAPs | D     20          
Base conversion price | $ / shares $ 6.40   $ 6.40          
Threshold notice period for payment to investors in cash     3 days          
Right to pay the investors as a percentage of portion of outstanding principal amount     103.00%          
Redeemable portion of outstanding principal amount     103.00%          
Threshold period for conversion of debt     9 months          
Outstanding principal amount of debt converted     $ 102,000          
Threshold prepayment notice to investor     10 days          
Threshold prepayment notice to company     5 days          
Percentage of conversion of principal amount     33.00%          
Percentage repayments of outstanding principal amount in the event of change of control     105.00%          
Convertible debt | Maxim Group LLC | March 2020 Private Placement                
Warrants to purchase shares of Common Stock | shares               227,679
Price per Unit | $ / shares               $ 6.40
Net proceeds     $ 1,700,000          
Commitment Fee Payable To Investor $ 85,000   $ 85,000          
Convertible debt | Maxim Group LLC | Maximum | March 2020 Private Placement                
Warrants to purchase shares of Common Stock | shares 20,400   20,400          
Notes March 2020                
Interest expense from amortization of debt discounts $ 0 $ 0 $ 0 $ 1,389,000        
Debt outstanding             $ 2,040,000  
[1] The condensed consolidated balance sheet as of December 31, 2020 was derived from the audited consolidated balance sheet as of that date.