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

Subsequent Events (Details)

v3.21.2
Subsequent Events (Details)
 6 Months Ended
Jul. 16, 2021
USD ($)
$ / shares
shares
Mar. 05, 2021
USD ($)
shares
Jun. 30, 2021
USD ($)
shares
Dec. 31, 2020
shares
Dec. 31, 2019
shares
Evolv Technologies Holdings, Inc.          
Subsequent Events          
Common stock, issued     35,342,394 26,045,532 22,809,158
Common stock, outstanding     30,182,983 26,045,532 22,809,158
Subsequent events | Evolv Technologies Holdings, Inc.          
Subsequent Events          
Amount paid from NHIC?s trust account to holders | $ $ 87,600,000        
Amount remained in the trust account | $ $ 85,000,000.0        
Plan of merger with NHIC and Merger Sub | Subsequent events | Evolv Technologies Holdings, Inc.          
Subsequent Events          
Shares considered for exchange ratio   125,000,000      
Maximum number of earnout shares entitled to receive   15,000,000      
Period considered for closing share price   5 years      
Number of trading days considered for calculating the share price   20 days      
Threshold number of consecutive trading days taken for share price   30 days      
Amended Merger Agreement | Subsequent events | Legacy Evolv preferred stock and common stock holders | Evolv Technologies Holdings, Inc.          
Subsequent Events          
Aggregate shares held by initial stockholders 4,312,500        
Conversion of shares 4,312,500        
Subscription Agreements | Evolv Technologies Holdings, Inc.          
Subsequent Events          
Aggregate purchase price | $     $ 300,000,000.0    
Subscription Agreements | Subsequent events | Evolv Technologies Holdings, Inc.          
Subsequent Events          
Aggregate purchase price | $   $ 300,000,000.0      
Subscription Agreements | Subsequent events | PIPE Investment | Evolv Technologies Holdings, Inc.          
Subsequent Events          
Newly issued shares 30,000,000        
Purchase price per share | $ / shares $ 10.00        
Aggregate purchase price | $ $ 300,000,000        
Class A Common Stock          
Subsequent Events          
Common stock, issued     4,343,415 3,172,650  
Common stock, outstanding     4,343,415 3,172,650  
Class A Common Stock | PIPE Investment | Evolv Technologies Holdings, Inc.          
Subsequent Events          
Common stock, issued 142,260,102        
Class A Common Stock | NewHold Industrial Technology Holdings LLC | Evolv Technologies Holdings, Inc.          
Subsequent Events          
Common stock, outstanding 142,260,102        
Class A Common Stock | Amended Merger Agreement | Subsequent events | Evolv Technologies Holdings, Inc.          
Subsequent Events          
Number of shares redeemed (in shares) 8,755,987        
Redemption price (in dollar per share) | $ / shares $ 10.00        
Number of business days for calculation of shares redemption | $ 2        
Value of shares redeemed | $ $ 87,600,000        
Class A Common Stock | Amended Merger Agreement | Subsequent events | Legacy Evolv preferred stock and common stock holders | Evolv Technologies Holdings, Inc.          
Subsequent Events          
Number of shares entitled to receive 0.378