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

Convertible Preferred Stock - Conversion ratio (Details)

v3.21.2
Convertible Preferred Stock - Conversion ratio (Details) - Evolv Technologies Holdings Inc [Member]
$ in Millions
 3 Months Ended 12 Months Ended
Mar. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Temporary Equity [Line Items]    
Minimum gross proceeds from sale of common stock required for conversion $ 50  
Series A-1 Preferred Stock    
Temporary Equity [Line Items]    
Conversion ratio 1  
Series B Preferred Stock    
Temporary Equity [Line Items]    
Conversion ratio 1  
Series B-1 Preferred Stock    
Temporary Equity [Line Items]    
Conversion ratio 1  
Series A Preferred Stock    
Temporary Equity [Line Items]    
Conversion ratio 2.0016 2.0016
Minimum gross proceeds from sale of common stock required for conversion   $ 50