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

Common Stock (Details)

v3.21.2
Common Stock (Details) - Evolv Technologies Holdings Inc [Member]
3 Months Ended 12 Months Ended
Mar. 31, 2021
USD ($)
Vote
$ / shares
shares
Dec. 31, 2020
USD ($)
Vote
$ / shares
shares
Dec. 31, 2019
USD ($)
Vote
$ / shares
shares
Mar. 31, 2020
shares
Number of shares authorized 325,991,899 305,491,899 300,000,000  
Par value common stock | $ / shares $ 0.01 $ 0.01 $ 0.01  
Number of votes per common share | Vote 1 1 1  
Cash dividends declared or paid | $ $ 0 $ 0 $ 0  
Number of common stock reserved 290,581,211 271,350,898 264,360,106 2,592,202