Quarterly report [Sections 13 or 15(d)]

Description of Business and Basis of Presentation - Going Concern, and Liquidity and Capital Resources (Details)

v3.25.3
Description of Business and Basis of Presentation - Going Concern, and Liquidity and Capital Resources (Details) - USD ($)
3 Months Ended 9 Months Ended
Aug. 20, 2025
Aug. 19, 2025
Apr. 07, 2025
Dec. 24, 2024
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Jun. 30, 2025
Jun. 27, 2025
Feb. 10, 2025
Jan. 07, 2025
Dec. 31, 2024
Jun. 10, 2024
Subsequent Event [Line Items]                          
Accumulated deficit           $ (481,326,000)   $ (481,300,000)       $ (430,334,000)  
Cash and short-term investments           $ 11,800,000              
Common stock, shares issued           20,912,172           12,993,962  
Commons stock value         $ 1,717,000   $ 4,239,000            
Stock exercised           0 3,000            
Common stock, par value           $ 0.00001   $ 0.00001 $ 0.00001     $ 0.00001 $ 0.00001
Common Stock [Member]                          
Subsequent Event [Line Items]                          
Common stock issued         49,524   114,831            
Stock exercised         19,572   28,181            
Underwriting Agreement [Member]                          
Subsequent Event [Line Items]                          
Net proceeds from the offering   $ 17,800,000                      
Common stock, par value   $ 0.00001                      
Underwriting Agreement [Member] | Common Stock [Member]                          
Subsequent Event [Line Items]                          
Common stock issued   5,833,333                      
Common stock, par value   $ 0.00001                      
Offering price per share   $ 3                      
Underwriting Agreement [Member] | Common Stock [Member] | Maximum                          
Subsequent Event [Line Items]                          
Additional shares   875,000                      
August 2025 Offering [Member]                          
Subsequent Event [Line Items]                          
Net proceeds from the offering $ 17,800,000                        
Underwriting discounts and commissions, and other estimated offering expenses payable 2,300,000                        
Gross proceeds from issuance of common stock 20,100,000                        
Commons stock value $ 17,500,000                        
August 2025 Offering [Member] | Common Stock [Member]                          
Subsequent Event [Line Items]                          
Common stock issued 5,833,333                        
Stock exercised 875,000                        
Senior Secured Convertible Promissory Note                          
Subsequent Event [Line Items]                          
Debt instrument, face amount                   $ 10,000,000 $ 5,000,000    
Secured notes bear interest rate                   30.00% 60.00%    
Note payable amount     $ 5,750,000             $ 5,750,000      
Debt instrument, interest payment     $ 750,000                    
Conversion price                   $ 15 $ 1.56    
Senior Secured Convertible Promissory Note | Tranche One                          
Subsequent Event [Line Items]                          
Debt instrument, face amount                   $ 5,000,000      
Senior Secured Convertible Promissory Note | Tranche Two                          
Subsequent Event [Line Items]                          
Debt instrument, face amount                   $ 5,000,000      
Debt For Equity Exchange                          
Subsequent Event [Line Items]                          
Common stock, shares issued       12,343,423                  
Cancellation of principal amount       $ 22,400,000                  
Debt instrument, accrued interest       400,000                  
Debt instrument, face amount       $ 5,000,000                  
Debt For Equity Exchange | Arrayed Notes Acquisition Corp                          
Subsequent Event [Line Items]                          
Ownership, Percentage       95.00%