Quarterly report pursuant to Section 13 or 15(d)

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

v3.21.2
Stock Based Compensation - Legacy NeuroRx 2016 Omnibus Incentive Plan - Stock option (Details) - $ / shares
9 Months Ended 12 Months Ended
Sep. 30, 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% 0.79%
Risk-free rate, maximum 1.24%  
Dividend yield 0.00% 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%  
Minimum    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]    
Strike price $ 10.03 $ 2.22
Expected term 5 years 3 months 4 years 8 months 8 days
Minimum | 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 | 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
Expected term 6 years 6 months 5 years 10 months 24 days
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  
Risk-free rate, maximum 0.79%  
Expected term 5 years 11 months 26 days