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

Convertible Preferred Stock - Consisted of preferred stock (Details)

v3.21.2
Convertible Preferred Stock - Consisted of preferred stock (Details) - USD ($)
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Temporary Equity [Line Items]              
Preferred Stock Authorized           201,898,140  
Preferred Stock Issued and Outstanding 12,906,585   14,077,350     196,217,618  
Carrying Value $ 129,066,000   $ 140,774,000        
Liquidation Preference           $ 74,000,000  
Common Stock Issuable Upon Conversion           205,465,730  
As previously reported              
Temporary Equity [Line Items]              
Carrying Value           $ 72,399,000  
Series A-1 Preferred Stock              
Temporary Equity [Line Items]              
Preferred Stock Authorized           67,156,152  
Preferred Stock Issued and Outstanding           64,469,906  
Liquidation Preference           $ 18,000,000  
Common Stock Issuable Upon Conversion           64,469,906  
Series A-1 Preferred Stock | As previously reported              
Temporary Equity [Line Items]              
Carrying Value           $ 17,910,000  
Series A Preferred Stock              
Temporary Equity [Line Items]              
Preferred Stock Authorized           9,233,677  
Preferred Stock Issued and Outstanding           9,233,677  
Liquidation Preference           $ 11,819,000  
Common Stock Issuable Upon Conversion           18,481,789  
Series A Preferred Stock | As previously reported              
Temporary Equity [Line Items]              
Carrying Value           $ 11,321,000  
Series B-1 Preferred Stock              
Temporary Equity [Line Items]              
Preferred Stock Authorized           84,836,497  
Preferred Stock Issued and Outstanding           81,842,221  
Liquidation Preference           $ 29,897,000  
Common Stock Issuable Upon Conversion           81,842,221  
Series B-1 Preferred Stock | As previously reported              
Temporary Equity [Line Items]              
Carrying Value           $ 28,959,000  
Series B Preferred Stock              
Temporary Equity [Line Items]              
Preferred Stock Authorized           40,671,814  
Preferred Stock Issued and Outstanding           40,671,814  
Liquidation Preference           $ 14,284,000  
Common Stock Issuable Upon Conversion           40,671,814  
Series B Preferred Stock | As previously reported              
Temporary Equity [Line Items]              
Carrying Value           $ 14,209,000  
Evolv Technologies Holdings, Inc.              
Temporary Equity [Line Items]              
Preferred Stock Authorized 207,390,039   207,390,039     201,898,140  
Preferred Stock Issued and Outstanding 204,703,793 204,703,793 204,703,793 204,703,793 204,703,793 196,217,618 114,375,397
Carrying Value $ 75,877,000 $ 75,877,000 $ 75,877,000 $ 75,877,000 $ 75,877,000 $ 72,883,000 $ 43,441,000
Liquidation Preference $ 77,100,000   $ 77,100,000        
Common Stock Issuable Upon Conversion 213,951,905   213,951,905        
Evolv Technologies Holdings, Inc. | As previously reported              
Temporary Equity [Line Items]              
Carrying Value     $ 75,393,000     $ 72,399,000  
Evolv Technologies Holdings, Inc. | Series A-1 Preferred Stock              
Temporary Equity [Line Items]              
Preferred Stock Authorized 67,156,152   67,156,152        
Preferred Stock Issued and Outstanding 64,469,906   64,469,906        
Carrying Value $ 18,394,000   $ 18,394,000        
Liquidation Preference $ 18,000,000   $ 18,000,000        
Common Stock Issuable Upon Conversion 64,469,906   64,469,906        
Evolv Technologies Holdings, Inc. | Series A-1 Preferred Stock | As previously reported              
Temporary Equity [Line Items]              
Carrying Value     $ 17,910,000        
Evolv Technologies Holdings, Inc. | Series A Preferred Stock              
Temporary Equity [Line Items]              
Preferred Stock Authorized 9,233,677   9,233,677        
Preferred Stock Issued and Outstanding 9,233,677   9,233,677        
Carrying Value $ 11,321,000   $ 11,321,000        
Liquidation Preference $ 11,819,000   $ 11,819,000        
Common Stock Issuable Upon Conversion 18,481,789   18,481,789        
Evolv Technologies Holdings, Inc. | Series A Preferred Stock | As previously reported              
Temporary Equity [Line Items]              
Carrying Value     $ 11,321,000        
Evolv Technologies Holdings, Inc. | Series B-1 Preferred Stock              
Temporary Equity [Line Items]              
Preferred Stock Authorized 90,328,396   90,328,396        
Preferred Stock Issued and Outstanding 90,328,396   90,328,396        
Carrying Value $ 31,953,000   $ 31,953,000        
Liquidation Preference $ 32,997,000   $ 32,997,000        
Common Stock Issuable Upon Conversion 90,328,396   90,328,396        
Evolv Technologies Holdings, Inc. | Series B-1 Preferred Stock | As previously reported              
Temporary Equity [Line Items]              
Carrying Value     $ 31,953,000        
Evolv Technologies Holdings, Inc. | Series B Preferred Stock              
Temporary Equity [Line Items]              
Preferred Stock Authorized 40,671,814   40,671,814        
Preferred Stock Issued and Outstanding 40,671,814   40,671,814        
Carrying Value $ 14,209,000   $ 14,209,000        
Liquidation Preference $ 14,284,000   $ 14,284,000        
Common Stock Issuable Upon Conversion 40,671,814   40,671,814        
Evolv Technologies Holdings, Inc. | Series B Preferred Stock | As previously reported              
Temporary Equity [Line Items]              
Carrying Value     $ 14,209,000