Quarterly report [Sections 13 or 15(d)]

Stockholders' Deficit - Additional Information (Details)

v3.25.2
Stockholders' Deficit - Additional Information (Details) - USD ($)
 3 Months Ended 6 Months Ended 12 Months Ended
Jan. 27, 2023
Jan. 12, 2023
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Dec. 31, 2023
Sep. 29, 2021
Dec. 31, 2018
Class Of Warrant Or Right [Line Items]                    
Weighted average remaining contractual life (years), outstanding         10 months 24 days          
Share-based compensation         $ 9,000 $ 199,000        
Professional Relations and Consulting Service [Member]                    
Class Of Warrant Or Right [Line Items]                    
Warrants granted, term 5 years 5 years                
Change in fair value of derivative liabilities     $ 4,000 $ 5,000 $ (5,000) (3,000)        
Warrant excercise price $ 0.47 $ 0.5                
Maximum [Member] | Professional Relations and Consulting Service [Member]                    
Class Of Warrant Or Right [Line Items]                    
Warrants granted to purchase common stock 500,000 250,000                
2011 Stock Incentive Option Plan [Member] | Stock Options [Member]                    
Class Of Warrant Or Right [Line Items]                    
Vesting period         3 years          
Exercisable/expiration period         10 years          
Expiration date         2021-05          
Stock option awards outstanding     1,300,774   1,300,774   1,461,443      
Number of shares authorized under the plan                   9,000,000
2021 Stock Incentive Option Plan [Member]                    
Class Of Warrant Or Right [Line Items]                    
Unrecognized share-based compensation expense     $ 22,000   $ 22,000          
Vesting period         6 months          
Exercisable/expiration period         10 years          
Stock option awards outstanding     3,095,000   3,095,000   3,580,833      
2021 Stock Incentive Option Plan [Member] | Stock Options [Member]                    
Class Of Warrant Or Right [Line Items]                    
Number of shares authorized under the plan                 4,000,000  
2012 Omnibus Incentive Compensation Plan [Member]                    
Class Of Warrant Or Right [Line Items]                    
Stock option awards outstanding     245,008   245,008   245,008      
2011 and 2021 Stock Incentive Option Plan [Member]                    
Class Of Warrant Or Right [Line Items]                    
Options granted         0   2,360,000      
Stock option awards outstanding     4,640,782   4,640,782   5,287,284 3,223,881    
2011 and 2021 Stock Incentive Option Plan [Member] | Stock Options [Member]                    
Class Of Warrant Or Right [Line Items]                    
Share-based compensation     $ (1,000) $ 29,000 $ 9,000 $ 199,000        
Employees [Member] | 2021 Stock Incentive Option Plan [Member]                    
Class Of Warrant Or Right [Line Items]                    
Options granted           1,620,000        
Vesting period           3 years        
Non-Employee Director [Member] | 2021 Stock Incentive Option Plan [Member]                    
Class Of Warrant Or Right [Line Items]                    
Options granted           300,000        
Vesting period           1 year        
Consultants [Member] | 2021 Stock Incentive Option Plan [Member]                    
Class Of Warrant Or Right [Line Items]                    
Options granted           440,000