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

Warrants - fair value of warrants (Details)

v3.21.2
Warrants - fair value of warrants (Details) - USD ($)
2 Months Ended 3 Months Ended 11 Months Ended
Mar. 31, 2020
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Class of Warrant or Right [Line Items]        
Changes in the fair value of warrants $ 0 $ 2,646,000   $ 10,571,000
Evolv Technologies Holdings Inc [Member]        
Class of Warrant or Right [Line Items]        
Changes in the fair value of warrants   $ 736,000 $ 0