v3.24.4
Stock-Based Compensation and Common Stock (Details) - USD ($)
 1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Oct. 23, 2024
Feb. 08, 2024
Jan. 29, 2024
Nov. 30, 2023
Oct. 02, 2023
Aug. 11, 2023
Feb. 21, 2023
Sep. 27, 2022
Feb. 23, 2024
Dec. 27, 2023
Oct. 23, 2023
Sep. 27, 2023
Feb. 21, 2023
Sep. 27, 2022
Sep. 30, 2024
Sep. 30, 2023
Mar. 31, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Dec. 31, 2022
Aug. 14, 2024
Stock-Based Compensation and Common Stock (Details) [Line Items]                                            
Share-Based Payment Arrangement, Amount Capitalized (in Dollars)                                       $ 500,000 $ 0  
Employee Benefits and Share-Based Compensation (in Dollars)                                         800,000  
General and Administrative Expense (in Dollars)                             $ 3,042,000 $ 8,208,000   $ 13,204,000 $ 27,133,000 $ 15,529,000 11,626,000  
Shares available for issuance                                       350,000,000    
Common Stock, Capital Shares Reserved for Future Issuance                                       250,000,000    
Common Stock relating to a portion of outstanding stock options and restricted stock                                       100,000,000    
Stock Issued During Period, Value, New Issues (in Dollars)                               1,248,000     6,168,000 $ 8,784,000 15,302,000  
Issuance of value for service (in Dollars)                                     106,000 106,000    
stock-based compensation related to unvested (in Dollars)                 $ 400,000                          
Description of RSU exchange program                                   the RSU Exchange Program, Nxu granted 1,117,457 Exchange Options to employees, which were scheduled to vest in equal amounts on March 31, 2024 and June 30, 2024. The Exchange Options had an initial fair value of $0.7 million, which is equal to the fair value of the Exchanged RSUs at the Exchange Date, and as such no additional compensation cost was recorded as a result of the modification on the Exchange Date. Concurrently with the grant of the Exchange Options, Nxu granted 553,236 additional stock options with a fair value of $0.3 million to employees, which were scheduled to vest in equal amounts on June 30, 2024 and September 30, 2024. Both the Exchange Options and the additional options are classified as equity awards. As of September 30, 2024, 628,776 Exchange Options and 69,808 additional stock options were vested with a fair valuing totaling approximately $0.4 million. As of September 30, 2024, a total of 972,109 Exchange Options and additional stock options were forfeited.        
Proceeds from the offering (in Dollars)                                   18,595,000 $ 21,209,000 15,302,000  
Registered shares                       300,000                    
Conversion price per share (in Dollars per share)                   $ 3                        
Impairment charge (in Dollars)                             975,000   975,000      
Allowance for estimated losses (in Dollars)                             200,000     $ 200,000        
Description of number of shares of all classes of capital stock                                   The total number of shares of all classes of capital stock which Nxu has authority to issue is 5.0 billion shares, consisting of (1) 5.0 billion authorized shares of common stock, including (a) 4.0 billion authorized shares of Class A Common Stock, (b) 1.0 billion authorized shares of Class B common stock and (2) 10.0 million authorized shares of preferred stock, par value $0.0001 per share.        
Lynx [Member]                                            
Stock-Based Compensation and Common Stock (Details) [Line Items]                                            
Impairment charge (in Dollars)                             $ 980,000     $ 980,000        
Common Stock [Member]                                            
Stock-Based Compensation and Common Stock (Details) [Line Items]                                            
Shares available for issuance                             350,000,000     350,000,000        
Stock Issued During Period, Value, New Issues (in Dollars)                                          
Restricted Stock Units (RSUs) [Member]                                            
Stock-Based Compensation and Common Stock (Details) [Line Items]                                            
Unrecognized compensation (in Dollars)                             $ 2,600,000     $ 2,600,000        
Weighted-average period                                   10 months 24 days        
Share Exchange Agreement [Member]                                            
Stock-Based Compensation and Common Stock (Details) [Line Items]                                            
Debt Instrument, Issued, Principal (in Dollars)   $ 300,000                                        
Chief Executive Officer [Member] | Common Stock Class B [Member]                                            
Stock-Based Compensation and Common Stock (Details) [Line Items]                                            
Number of share offering                                       200,000    
Public Offering [Member]                                            
Stock-Based Compensation and Common Stock (Details) [Line Items]                                            
Number of share offering           100,000         600,000   100,000                  
Offering price per share (in Dollars per share)           $ 45 $ 234       $ 5.25   $ 234                  
Stock Issued During Period, Value, New Issues (in Dollars)           $ 4,500,000         $ 2,600,000   $ 12,000,000                  
Proceeds from the offering (in Dollars)                     $ 2,600,000                      
Number of shares consisted in public offering           Each unit consists of one share of Class A common stock (or a pre-funded warrant in lieu thereof) and one common warrant, with each warrant exercisable for two shares of Class A common stock at an exercise price of $45.00 per share (the “August 2023 Warrants). See Note 14 — Convertible Notes and Warrant Liability for more information regarding the August 2023 Warrants. Proceeds from the offering, net of offering costs, were approximately $4.5 million.                                
Public Offering [Member] | Common Stock [Member]                                            
Stock-Based Compensation and Common Stock (Details) [Line Items]                                            
Proceeds from the offering (in Dollars)             $ 12,000,000                              
Public Offering [Member] | Series A Warrants [Member]                                            
Stock-Based Compensation and Common Stock (Details) [Line Items]                                            
Offering price per share (in Dollars per share)             $ 0.65           $ 0.65                  
Public Offering [Member] | Series B Warrants [Member]                                            
Stock-Based Compensation and Common Stock (Details) [Line Items]                                            
Offering price per share (in Dollars per share)             $ 0.75           $ 0.75                  
Promissory Note [Member]                                            
Stock-Based Compensation and Common Stock (Details) [Line Items]                                            
Principal amount (in Dollars)                             300,000     $ 300,000        
Interest rate                                   8.00%        
Principal payment (in Dollars)                             20,000     $ 20,000        
Payment of the remaining principal (in Dollars)                                   80,000.00        
Promissory Note [Member] | Lynx [Member]                                            
Stock-Based Compensation and Common Stock (Details) [Line Items]                                            
Principal amount (in Dollars)                             300,000     $ 300,000        
Shareholder [Member]                                            
Stock-Based Compensation and Common Stock (Details) [Line Items]                                            
General and Administrative Expense (in Dollars)                                         $ 600,000  
GEM Global [Member]                                            
Stock-Based Compensation and Common Stock (Details) [Line Items]                                            
Payment of commitment fee in shares                       200,000   200,000                
Issuance of additional warrant                       2,000   200,000                
Number of shares purchased (in Dollars)               $ 300,000,000                            
Agreement term               3 years                            
Vendor [Member]                                            
Stock-Based Compensation and Common Stock (Details) [Line Items]                                            
Issuance of shares for service                                 573          
Issuance of value for service (in Dollars)                                 $ 100,000          
Amended Incentive Plan [Member]                                            
Stock-Based Compensation and Common Stock (Details) [Line Items]                                            
Shares available for issuance                                           48,000,000
Amended Incentive Plan [Member] | Subsequent Event [Member] | Restricted Stock Units (RSUs) [Member]                                            
Stock-Based Compensation and Common Stock (Details) [Line Items]                                            
Number of shares granted 591,715                                          
2023 Omnibus Incentive Plan [Member]                                            
Stock-Based Compensation and Common Stock (Details) [Line Items]                                            
Shares reserved and available for issuance description                                   (i) 250 million shares of common stock available for new issuances under the Plan and (ii) 100 million shares of common stock relating to a portion of outstanding stock options and RSUs assumed by Nxu in connection with the Reorganization Merger; provided, that the total number of shares of common stock that will be reserved, and that may be issued, under the Plan will automatically increase on the first trading day of each calendar year, beginning with calendar year 2024, by a number of common shares equal to five percent (5%) of the total number of outstanding shares on the last day of the prior calendar year        
Related Party [Member] | Promissory Note [Member]                                            
Stock-Based Compensation and Common Stock (Details) [Line Items]                                            
Principal payment (in Dollars)                             $ 20,000     $ 20,000        
Class A Common Stock [Member]                                            
Stock-Based Compensation and Common Stock (Details) [Line Items]                                            
Common stock, par value (in Dollars per share)     $ 0.0001             $ 0.0001         $ 0.0001     $ 0.0001   $ 0.0001 $ 0.0001  
Number of share offering       9,100,000                                    
Conversion of preferred shares     1,000,000             1,000                        
Debt Instrument, Convertible, Conversion Price (in Dollars per share)                   $ 3                        
Registered shares     1,000,000                                      
Sale of common stock (in Dollars)       $ 75,000,000                                    
Proceeds from common stock (in Dollars)       $ 14,000,000                                    
Class A Common Stock [Member] | Common Stock [Member]                                            
Stock-Based Compensation and Common Stock (Details) [Line Items]                                            
Stock Issued During Period, Value, New Issues (in Dollars)                                      
Issuance of shares for service                                     973 973    
Issuance of value for service (in Dollars)                                        
Number of shares issued                               101,778     157,092 730,425 16,504  
Class A Common Stock [Member] | GEM Global [Member]                                            
Stock-Based Compensation and Common Stock (Details) [Line Items]                                            
Commitment fee (in Dollars)                       $ 6,000,000                    
Description of stock purchased agreement         October 2, 2023, 0.2 million shares of Class A common stock and 2 thousand common stock warrants were issued to GEM Global.             On October 2, 2023, the 0.2 million shares of Class A common stock and 2 thousand common stock warrants were issued to GEM Global.                    
Class B Common Stock [Member]                                            
Stock-Based Compensation and Common Stock (Details) [Line Items]                                            
Common stock, par value (in Dollars per share)                             0.0001     0.0001   $ 0.0001 $ 0.0001  
Class B Common Stock [Member] | Common Stock [Member]                                            
Stock-Based Compensation and Common Stock (Details) [Line Items]                                            
Stock Issued During Period, Value, New Issues (in Dollars)                                    
Issuance of value for service (in Dollars)                                        
Series A Convertible Preferred Stock [Member]                                            
Stock-Based Compensation and Common Stock (Details) [Line Items]                                            
Conversion of preferred shares   1,000,000                                        
Number of shares issued     1,000             1,000                        
Preferred stock, par value (in Dollars per share)     $ 0.0001             $ 0.0001                        
Nxu Class A Common Stock [Member]                                            
Stock-Based Compensation and Common Stock (Details) [Line Items]                                            
Common stock, par value (in Dollars per share)                             0.0001     0.0001        
Class D Common Stock [Member]                                            
Stock-Based Compensation and Common Stock (Details) [Line Items]                                            
Common stock, par value (in Dollars per share)                             $ 0.0001     $ 0.0001