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

Net Loss per Share (Details)

v3.21.2
Net Loss per Share (Details) - USD ($)
 2 Months Ended 3 Months Ended 8 Months Ended 11 Months Ended 12 Months Ended
Mar. 31, 2020
Mar. 31, 2021
Mar. 31, 2020
Sep. 30, 2020
Dec. 31, 2020
Dec. 31, 2020
Dec. 31, 2019
Numerator:              
Net loss and comprehensive loss attributable to common stockholders - basic and diluted $ (2,000) $ (4,082,000)   $ (390,000) $ (11,912,000)    
Evolv Technologies Holdings Inc [Member]              
Numerator:              
Net loss and comprehensive loss attributable to common stockholders - basic and diluted   $ (13,755,000) $ (6,430,000)     $ (27,392,000) $ (19,857,000)
Denominator:              
Weighted average common shares outstanding - basic and diluted   26,433,739 23,414,746     23,625,483 22,655,763
Net loss per share attributable common stockholders ? basic and diluted   $ (0.52) $ (0.27)     $ (1.16) $ (0.88)