Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Contingently Issuable Common Stock (Details)

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Summary of Significant Accounting Policies - Contingently Issuable Common Stock (Details)
 12 Months Ended
Dec. 31, 2021
D
$ / shares
shares
Dec. 31, 2020
$ / shares
Business Acquisition, Contingent Consideration [Line Items]    
Number of shares issued for each share 0.378  
Par value common stock | $ / shares $ 0.0001 $ 0.0001
Vest on January 1, 2024 if and only if the bookings goal was achieved and subject to the grantee's continued service through the applicable vesting date    
Business Acquisition, Contingent Consideration [Line Items]    
Number of trading days | D 20  
Number of consecutive trading days | D 30  
Vest on January 1, 2024 if and only if the bookings goal was achieved and subject to the grantee's continued service through the applicable vesting date | Minimum    
Business Acquisition, Contingent Consideration [Line Items]    
Share price | $ / shares $ 12.50  
Vest on January 1, 2024 if and only if the bookings goal was achieved and subject to the grantee's continued service through the applicable vesting date | Maximum    
Business Acquisition, Contingent Consideration [Line Items]    
Vesting period 5 years  
Vesting Provision III    
Business Acquisition, Contingent Consideration [Line Items]    
Vesting period 5 years  
Number of trading days | D 20  
Number of consecutive trading days | D 30  
Vesting Provision III | Minimum    
Business Acquisition, Contingent Consideration [Line Items]    
Share price | $ / shares $ 15.00  
Common Class B | Vest on January 1, 2023, provided that the Company has achieved its annual bookings goal for fiscal year 2022    
Business Acquisition, Contingent Consideration [Line Items]    
Shares vested 1,897,500  
Common Class B | Vest on January 1, 2024 if and only if the bookings goal was achieved and subject to the grantee's continued service through the applicable vesting date    
Business Acquisition, Contingent Consideration [Line Items]    
Shares vested 948,750  
Common Class B | Vesting Provision III    
Business Acquisition, Contingent Consideration [Line Items]    
Shares vested 948,750  
Give Evolv LLC    
Business Acquisition, Contingent Consideration [Line Items]    
Remaining number of founder shares 517,500  
NHIC Sub Inc    
Business Acquisition, Contingent Consideration [Line Items]    
Shares outstanding 4,312,500  
Par value common stock | $ / shares $ 0.0001