Post-effective amendment to a registration statement that is not immediately effective upon filing

Stock Based Compensation - Legacy NeuroRx 2016 Omnibus Incentive Plan - Stock option (Details)

v3.22.1
Stock Based Compensation - Legacy NeuroRx 2016 Omnibus Incentive Plan - Stock option (Details) - $ / shares
12 Months Ended
Aug. 23, 2021
Dec. 31, 2021
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]      
Volatility rate     80.00%
Risk-free rate, minimum   0.69%  
Dividend yield 0.00%    
2016 Omnibus Inventive Plan [Member] | Original Options [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]      
Volatility rate   80.00%  
Risk-free rate, minimum   0.07%  
Risk-free rate, maximum   0.79%  
2016 Omnibus Inventive Plan [Member] | Substitute Options      
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]      
Volatility rate   80.00%  
Risk-free rate, minimum   0.07%  
Risk-free rate, maximum   0.79%  
Minimum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]      
Strike price   $ 6.44 $ 2.22
Volatility rate   80.00%  
Expected term   5 years 3 months 4 years 8 months 8 days
Minimum [Member] | 2016 Omnibus Inventive Plan [Member] | Original Options [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]      
Strike price   $ 1.00  
Expected term   2 months 4 days  
Minimum [Member] | 2016 Omnibus Inventive Plan [Member] | Substitute Options      
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]      
Strike price   $ 0.20  
Expected term   2 months 4 days  
Maximum      
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]      
Strike price   $ 23.41 $ 3.07
Volatility rate   85.90%  
Risk-free rate, maximum   1.45%  
Expected term   6 years 6 months 5 years 11 months 1 day
Maximum | 2016 Omnibus Inventive Plan [Member] | Original Options [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]      
Strike price   $ 72.30  
Expected term   5 years 11 months 26 days  
Maximum | 2016 Omnibus Inventive Plan [Member] | Substitute Options      
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]      
Strike price   $ 14.58  
Expected term   5 years 11 months 26 days