General form of registration statement for all companies including face-amount certificate companies

Note 11 - Stock and Employee Benefit Plans - Stock Options Activity 1 (Details)

v3.24.4
Note 11 - Stock and Employee Benefit Plans - Stock Options Activity 1 (Details) - Pieris Pharmaceuticals, Inc. [Member] - USD ($)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Granted, balance (in shares) 46,677 38,498
Executive Officers and Management [Member]    
Outstanding, balance (in shares) 3,750  
Outstanding, exercise price (in dollars per share) $ 372  
Outstanding, balance (in shares) 3,750 3,750
Outstanding, exercise price (in dollars per share) $ 372 $ 372
Outstanding, contractual life (Year) 5 years 8 months 1 day  
Vested or expected to vest, balance (in shares) 3,750  
Vested or expected to vest, exercise price (in dollars per share) $ 372  
Vested or expected to vest, contractual life (Year) 5 years 8 months 1 day  
Exercisable, balance (in shares) 3,750  
Exercisable, exercise price (in dollars per share) $ 372  
Exercisable, contractual life (Year) 5 years 8 months 1 day  
Exercisable, intrinsic value  
Employee Director And Consultant Equity Incentive Plan2020 [Member]    
Outstanding, balance (in shares) 165,849  
Outstanding, exercise price (in dollars per share) $ 256.93  
Outstanding, intrinsic value  
Granted, balance (in shares) 46,677  
Granted, exercise price (in dollars per share) $ 97.34  
Granted, intrinsic value  
Canceled, balance (in shares) 34,345  
Canceled, exercise price (in dollars per share) $ 208.95  
Canceled, intrinsic value  
Outstanding, balance (in shares) 178,181 165,849
Outstanding, exercise price (in dollars per share) $ 224.37 $ 256.93
Outstanding, contractual life (Year) 5 years 10 months 24 days  
Outstanding, intrinsic value
Vested or expected to vest, balance (in shares) 178,181  
Vested or expected to vest, exercise price (in dollars per share) $ 224.37  
Vested or expected to vest, contractual life (Year) 5 years 10 months 24 days  
Vested or expected to vest, intrinsic value  
Exercisable, balance (in shares) 126,179  
Exercisable, exercise price (in dollars per share) $ 257.26  
Exercisable, contractual life (Year) 4 years 9 months  
Exercisable, intrinsic value