Quarterly report pursuant to Section 13 or 15(d)

Unsecured Promissory Notes Payable - Narrative (Details)

v3.23.3
Unsecured Promissory Notes Payable - Narrative (Details)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 10, 2023
USD ($)
shares
Jan. 26, 2023
USD ($)
$ / shares
shares
Feb. 28, 2022
USD ($)
$ / shares
shares
Sep. 30, 2023
USD ($)
Sep. 30, 2022
USD ($)
Sep. 30, 2023
USD ($)
Sep. 30, 2022
USD ($)
Jan. 27, 2023
shares
Jan. 12, 2023
$ / shares
Sep. 15, 2020
USD ($)
investor
debt
Short-Term Debt [Line Items]                    
Exercise price (in dollars per share) | $ / shares                 $ 10.00  
Warrants term (in years)               5 years 1 year  
Conversion price (in dollars per share) | $ / shares     $ 5.75              
Cash paid     $ 1,441              
Principal amount     1,400              
Interest payable     41              
Debt conversion     1,150              
Periodic payment     2,591              
2023 Notes Warrants                    
Short-Term Debt [Line Items]                    
Warrants (in shares) | shares   76,000           76,000    
Exercise price (in dollars per share) | $ / shares   $ 9.00                
Weighted average remaining contractual life, options vested and exercisable (in years)   5 years                
Expected volatility rate   81.50%                
Risk free interest rate   3.62%                
Warrants term (in years)   5 years                
Warrant, fair value   $ 380                
2023 Notes Warrants | Black-Scholes Option Pricing Model                    
Short-Term Debt [Line Items]                    
Warrant fair value   400                
Unsecured Debt                    
Short-Term Debt [Line Items]                    
Debt, face amount     $ 600              
Conversion shares (in shares) | shares     200,000              
Conversion price (in dollars per share) | $ / shares     $ 3.00              
Debt conversion, amount $ 2,400                  
Debt conversion, shares issued (in shares) | shares 800,000                  
Unsecured Debt | Letter Agreement                    
Short-Term Debt [Line Items]                    
Debt, face amount     $ 2,000              
September 2020 Notes | Unsecured Debt                    
Short-Term Debt [Line Items]                    
Debt, face amount                   $ 10,000
Number of debt instruments | debt                   2
Number of investors | investor                   2
Interest expense       $ 300 $ 200 $ 800 $ 600      
2023 Note | Unsecured Debt                    
Short-Term Debt [Line Items]                    
Debt, face amount   $ 7,600                
Interest rate   10.00%                
2023 Note | Unsecured Debt | 2023 Notes Warrants                    
Short-Term Debt [Line Items]                    
Debt, face amount       7,200   7,200        
Debt discount       $ 300   $ 300