Quarterly report [Sections 13 or 15(d)]

Share-based compensation - Underwriters Warrants (Details)

v3.26.1
Share-based compensation - Underwriters Warrants (Details) - USD ($)
3 Months Ended 12 Months Ended
Mar. 18, 2023
Dec. 21, 2021
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Sep. 30, 2022
Share-based compensation            
Warrants outstanding     4,386,037      
Number of warrants exercised       0    
Number of Shares            
Warrants outstanding at the beginning of the period            
Warrants granted     4,386,037      
Warrants outstanding at the end of the period     4,386,037      
Exercisable at end of the period     4,386,037      
Weighted Average Exercise Price            
Weighted Average Exercise Price, Outstanding at beginning at the beginning            
Weighted Average Exercise Price, Granted     $ 3.28      
Weighted Average Exercise Price, Outstanding at ending at the ending     3.28      
Weighted Average Exercise Price, Exercisable at end of the period     $ 3.28      
Underwriter Warrants            
Share-based compensation            
Warrants to purchase shares   6,900        
Warrants exercise price   $ 312.5        
Remaining contractual term   5 years        
Percentage of warrants exercisable   100.00%        
Warrants outstanding     855   855  
Number of Shares            
Warrants outstanding at the beginning of the period     855      
Warrants outstanding at the end of the period     855   855  
Exercisable at end of the period     855      
Weighted Average Exercise Price            
Weighted Average Exercise Price, Outstanding at beginning at the beginning     $ 15.63      
Weighted Average Exercise Price, Outstanding at ending at the ending     15.63   $ 15.63  
Weighted Average Exercise Price, Exercisable at end of the period     $ 15.63      
Weighted Average Remaining Contractual Term     1 year 5 months 19 days   1 year 8 months 19 days  
Exercisable contractual term     1 year 5 months 19 days      
Intrinsic value of underwriters warrants outstanding     $ 0      
Representative Warrants            
Share-based compensation            
Warrants to purchase shares           20,000
Warrants exercise price           $ 15.625
Remaining contractual term 5 years          
Percentage of warrants exercisable 100.00%          
Warrants            
Share-based compensation            
Unrecognized compensation expense     $ 0      
Representative Warrants | Representative Warrants            
Share-based compensation            
Warrants outstanding     855      
Number of Shares            
Warrants outstanding at the beginning of the period            
Warrants outstanding at the end of the period     855