v3.25.2
Equity Incentive Plans - Additional Information (Details) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Jan. 01, 2025
Aug. 09, 2024
Jan. 01, 2024
Equity Incentive Plans                    
Option term     10 years              
Shares available to award 454,401   454,401   5,555          
Percentage of number of shares added each year           5.00% 5.00%      
Weighted-average exercise price of stock options outstanding $ 152.28   $ 152.28              
Weighted-average exercise price of stock options exercisable $ 346.95   $ 346.95              
Weighted average remaining contractual life for stock options outstanding     9 years 1 month 2 days              
Weighted average remaining contractual life for stock options exercisable     8 years 6 months 18 days              
Stock-based compensation expense $ 177,000 $ 54,000 $ 277,000 $ 108,000            
Share-based compensation remaining expense 104,000   $ 104,000              
Share-based compensation expense, expected to be amortized period     11 months 4 days              
Accrued bonus related to stock based compensation 87,000   $ 87,000              
Share-based Payment Arrangement, Employee                    
Equity Incentive Plans                    
Percentage of voting power     10.00%              
Exercise price on percentage of fair market value per share on the date of grant     110.00%              
Share-based Payment Arrangement, Nonemployee                    
Equity Incentive Plans                    
Exercise price on percentage of fair market value per share on the date of grant     100.00%              
Incentive Stock Option                    
Equity Incentive Plans                    
Option term     5 years              
Employee Stock Option                    
Equity Incentive Plans                    
Stock-based compensation expense $ 57,000 53,000 $ 131,000 105,000            
Restricted Stock Awards                    
Equity Incentive Plans                    
Stock awards outstanding 0   0              
Fair value of restricted stock awards vested $ 0 1,000 $ 2,000 3,000            
Restricted Stock Units                    
Equity Incentive Plans                    
Fair value of restricted stock units granted during the period 306,000   306,000              
Stock-based compensation expense 33,000 $ 0 $ 57,000 $ 0            
Granted   0 35,296 0            
Share-based compensation remaining expense $ 416,000   $ 416,000              
Share-based compensation expense, expected to be amortized period     3 years 7 months 17 days              
2021 Plan                    
Equity Incentive Plans                    
Number of shares authorized   5,434   5,434       86,669   4,312
Percentage of voting power     10.00%              
Amended and Restated 2021 Equity Incentive Plan                    
Equity Incentive Plans                    
Number of shares authorized 511,669   511,669         27,846 58,823  
Shares available to award 454,401   454,401              
Percentage of number of shares added each year         5.00%