Quarterly report [Sections 13 or 15(d)]

Outstanding Debt - 2025 Loan Agreements with Warrants, 2025 Short-term Loans, 2025 Future Receipts Financing Arrangements, and July 2025 Private Placement (Details)

v3.25.3
Outstanding Debt - 2025 Loan Agreements with Warrants, 2025 Short-term Loans, 2025 Future Receipts Financing Arrangements, and July 2025 Private Placement (Details)
1 Months Ended 3 Months Ended 9 Months Ended
Sep. 29, 2025
USD ($)
payment
Aug. 25, 2025
USD ($)
Aug. 22, 2025
USD ($)
agreement
payment
$ / shares
shares
Aug. 14, 2025
USD ($)
Aug. 01, 2025
USD ($)
payment
Jul. 22, 2025
USD ($)
debt_instrument
agreement
investor
$ / shares
shares
Jun. 22, 2025
USD ($)
note
$ / shares
shares
May 22, 2025
USD ($)
Oct. 22, 2024
USD ($)
Sep. 11, 2025
USD ($)
payment
agreement
Sep. 30, 2025
USD ($)
shares
Sep. 30, 2024
USD ($)
Sep. 30, 2025
USD ($)
shares
Sep. 30, 2024
USD ($)
Debt Instrument [Line Items]                            
Debt extinguishment loss                     $ (220,000) $ 0 $ 498,000 $ 0
Amortization of debt discount                         1,813,000 983,000
Proceeds from issuance of note payable, net                         $ 2,914,000 $ 8,334,000
Warrants (in shares) | shares                     7,050,000   7,050,000  
Convertible Notes Payable                            
Debt Instrument [Line Items]                            
Discount, current                     $ 3,233,000   $ 3,233,000  
Non-Convertible Promissory Notes                            
Debt Instrument [Line Items]                            
Number of non-convertible promissory notes issued | note             2              
Term note period (in months/years)             12 months              
Unaffiliated Investor Loan                            
Debt Instrument [Line Items]                            
Debt, face amount             $ 625,000              
Debt discount             $ 125,000              
Interest rate (as a percent)             10.00%              
Fair value of debt             $ 433,000              
Unaffiliated Investor Loan | Unaffiliated Investor Warrants                            
Debt Instrument [Line Items]                            
Unvested warrants (in shares) | shares             500,000              
Warrants value             $ 115,000              
CEO Loan                            
Debt Instrument [Line Items]                            
Debt, face amount             625,000              
Debt discount             $ 125,000              
Interest rate (as a percent)             10.00%              
Proceeds from short-term debt             $ 500,000              
CEO Loan | CEO Warrants                            
Debt Instrument [Line Items]                            
Unvested warrants (in shares) | shares             500,000              
Exercise price of warrants (in dollars per share) | $ / shares             $ 0.60              
Warrants term (in years)             5 years              
Warrants value             $ 115,000              
Expected dividend yield (per share)             0.00%              
Expected stock price volatility (as a percent)             98.40%              
Risk-free rate of interest (as a percent)             4.00%              
Expected term (years)             5 years              
2024 Term Note                            
Debt Instrument [Line Items]                            
Term note period (in months/years)                 12 months          
Debt, face amount                 $ 500,000          
Interest rate (as a percent)                 15.00%          
Extinguishment of debt amount             $ 500,000              
Debt extinguishment loss                         48,000  
Debt instrument, periodic payment terms, balloon payment to be paid                 $ 506,250          
Periodic payment interest                 $ 6,250          
May 2025 Note | Loans Payable                            
Debt Instrument [Line Items]                            
Proceeds from short-term debt               $ 200,000            
Debt instrument, periodic payment terms, balloon payment to be paid               $ 250,000            
Interest expense                         46,000  
First August 2025 Note | Loans Payable                            
Debt Instrument [Line Items]                            
Proceeds from short-term debt         $ 100,000                  
Discount, current         15,000                  
Periodic payment         $ 126,750                  
Number of periodic payments (weeks/months) | payment         4                  
Amortization of debt discount                     4,000      
Second August 2025 Note | Loans Payable                            
Debt Instrument [Line Items]                            
Proceeds from short-term debt       $ 150,000                    
Debt instrument, periodic payment terms, balloon payment to be paid       159,452                    
Periodic payment interest       $ 9,452                    
Third August 2025 Notes | Loans Payable                            
Debt Instrument [Line Items]                            
Term note period (in months/years)                   10 months        
Proceeds from short-term debt                   $ 400,000        
Periodic payment                   $ 528,000        
Number of periodic payments (weeks/months) | payment                   4        
Amortization of debt discount                     12,000      
Number of agreements entered into | agreement                   2        
Debt instrument, unamortized discount (premium) and debt issuance costs, net                   $ 76,000        
Periodic payment delay from issuance date (in months)                   6 months        
August Future Receipts Financing Agreements | Loans Payable                            
Debt Instrument [Line Items]                            
Debt, face amount     $ 1,400,000                      
Discount, current                     256,000   256,000  
Periodic payment     $ 120,083                      
Number of periodic payments (weeks/months) | payment     12                      
Amortization of debt discount                         52,000  
Number of agreements entered into | agreement     2                      
Net proceeds from short-term debt   $ 700,000                        
Origination fee   188,000                        
Short-term loan payable                     $ 1,100,000   $ 1,100,000  
August Future Receipts Financing Agreements | August Warrants | Loans Payable                            
Debt Instrument [Line Items]                            
Unvested warrants (in shares) | shares     500,000                      
Exercise price of warrants (in dollars per share) | $ / shares     $ 0.50                      
Warrants term (in years)     5 years                      
Warrants value     $ 120,000                      
Expected dividend yield (per share)     0.00%                      
Expected stock price volatility (as a percent)     98.30%                      
Risk-free rate of interest (as a percent)     3.80%                      
Expected term (years)     5 years                      
Libertas Financing Agreement | Loans Payable                            
Debt Instrument [Line Items]                            
Repayments of short-term debt   $ 553,000                        
September 2025 Future Receipts Financing Agreements | Loans Payable                            
Debt Instrument [Line Items]                            
Debt, face amount $ 396,000                          
Periodic payment $ 19,800                          
Number of periodic payments (weeks/months) | payment 20                          
Origination fee $ 6,600                          
Proceeds from issuance of note payable, net 330,000                          
Brokerage fee $ 77,000                          
July 2025 Notes | Convertible Notes Payable                            
Debt Instrument [Line Items]                            
Debt, face amount           $ 3,800,000                
Interest rate (as a percent)           10.00%                
Discount, current           $ 750,000                
Number of agreements entered into | agreement           2                
Net proceeds from short-term debt           $ 2,800,000                
Short-term loan payable           $ 3,000,000.0                
Number of investors | investor           2                
Number of debt instruments issued | debt_instrument           2                
Debt discount (as a percent)           20.00%                
Note conversion waiting period (in months)           4 months                
Threshold percentage of stock price           80.00%                
Embedded derivative liabilities           $ 3,200,000                
July 2025 Notes | July Warrants | Convertible Notes Payable                            
Debt Instrument [Line Items]                            
Exercise price of warrants (in dollars per share) | $ / shares           $ 0.50                
Warrants term (in years)           5 years                
Warrants value           $ 1,300,000                
Expected dividend yield (per share)           0.00%                
Expected stock price volatility (as a percent)           97.90%                
Risk-free rate of interest (as a percent)           3.90%                
Expected term (years)           5 years                
Warrants (in shares) | shares           5,250,000