Quarterly report [Sections 13 or 15(d)]

Stock-Based Compensation - Narrative (Details)

v3.25.3
Stock-Based Compensation - Narrative (Details)
3 Months Ended 9 Months Ended
May 20, 2025
USD ($)
$ / shares
shares
Jan. 02, 2025
USD ($)
$ / shares
shares
Sep. 30, 2024
$ / shares
shares
Sep. 13, 2021
shares
Sep. 30, 2025
USD ($)
shares
Sep. 30, 2025
USD ($)
$ / shares
shares
Sep. 30, 2024
shares
Dec. 31, 2024
shares
Dec. 20, 2024
Mar. 15, 2024
Mar. 14, 2024
Jan. 24, 2023
Jan. 23, 2023
Jan. 30, 2018
Stock-Based Compensation                            
Additional stock-based compensation expense | $         $ 1,400,000 $ 1,400,000                
Restricted stock awards with service-based vesting conditions                            
Stock-Based Compensation                            
Unamortized compensation costs | $         $ 6,000,000 $ 6,000,000                
Weighted-average period           2 years 1 month 13 days                
Number of restricted shares granted           8,967,625                
Shares unvested         6,579,618 6,579,618   669,344            
Fair value per share | $ / shares           $ 0.84                
Restricted stock awards with performance-based vesting conditions                            
Stock-Based Compensation                            
Unamortized compensation costs | $         $ 1,400,000 $ 1,400,000                
Weighted-average period           1 year 4 months 20 days                
Term for achieving threshold revenue           5 years                
Number of restricted shares granted           1,955,000                
Shares unvested         1,955,000 1,955,000                
Fair value per share | $ / shares           $ 1.04                
LTSI                            
Stock-Based Compensation                            
Maximum shares authorized to issue, percentage                 15.00% 15.00% 8.00%     15.00%
Percentage of maximum shares issued in a year                       15 8 8
Number of shares available for grant         24,045,590 24,045,590                
LTSI | Restricted stock                            
Stock-Based Compensation                            
Number of stock released         748,817 805,906                
Aggregate intrinsic value | $         $ 297,280 $ 344,361                
LTSI | Restricted stock awards with performance-based vesting conditions                            
Stock-Based Compensation                            
Threshold revenues to be achieved for vesting | $           $ 40,000,000                
September 2021 Inducement Grant | Restricted stock                            
Stock-Based Compensation                            
Number of restricted shares granted       21                    
Shares unvested         16 16                
September 2024 Inducement Warrants | Restricted stock                            
Stock-Based Compensation                            
Unamortized compensation costs | $         $ 0 $ 0                
Number of restricted shares granted     70,000                      
Fair value per share | $ / shares     $ 1.77                      
2022 | Restricted stock units                            
Stock-Based Compensation                            
Unamortized compensation costs | $         $ 46,000 $ 46,000                
Weighted-average period           11 months 19 days                
Number of stock released           0 3              
Shares unvested         8 8   14            
Bradley Inducement Grant                            
Stock-Based Compensation                            
Unamortized compensation costs | $         $ 1,700,000 $ 1,700,000                
Weighted-average period           1 year 11 months 1 day                
Bradley Inducement Grant | Restricted stock units                            
Stock-Based Compensation                            
Number of restricted shares granted   1,200,000                        
Fair value per share | $ / shares   $ 2.04                        
Bradley Inducement Grant | Restricted stock awards with service-based vesting conditions                            
Stock-Based Compensation                            
Number of restricted shares granted   600,000                        
Vesting period for each installment   3 months                        
Vesting term   36 months                        
Bradley Inducement Grant | Restricted stock awards with performance-based vesting conditions                            
Stock-Based Compensation                            
Threshold revenues to be achieved for vesting | $   $ 40,000,000                        
Term for achieving threshold revenue   5 years                        
Number of restricted shares granted   600,000                        
LoGuirato Inducement Grant                            
Stock-Based Compensation                            
Unamortized compensation costs | $         $ 401,000 $ 401,000                
Weighted-average period           2 years 6 months                
LoGuirato Inducement Grant | Restricted stock units                            
Stock-Based Compensation                            
Number of restricted shares granted 500,000                          
Fair value per share | $ / shares $ 0.97                          
LoGuirato Inducement Grant | Restricted stock awards with service-based vesting conditions                            
Stock-Based Compensation                            
Number of restricted shares granted 250,000                          
Vesting period for each installment 3 months                          
Vesting term 36 months                          
LoGuirato Inducement Grant | Restricted stock awards with performance-based vesting conditions                            
Stock-Based Compensation                            
Threshold revenues to be achieved for vesting | $ $ 25,000,000                          
Term for achieving threshold revenue 5 years                          
Number of restricted shares granted 250,000