v3.22.2.2
Nature of Operations - Additional Information (Detail)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 14, 2022
Mar. 19, 2021
Mar. 16, 2015
Sep. 30, 2022
USD ($)
Sep. 30, 2021
USD ($)
Sep. 30, 2022
USD ($)
Sep. 30, 2021
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Sep. 27, 2022
USD ($)
Nature Of Operations [Line Items]                    
Date of incorporation   Mar. 19, 2021 Mar. 16, 2015              
Retained earnings accumulated deficit       $ 86,831   $ 86,831   $ 75,401 [1] $ 65,505 [1]  
Commitement to contribute cash               2,800    
Net income (loss)       (4,244) $ (3,141) (11,276) $ (6,194) $ (9,896) $ (7,418)  
Cash and cash equivalents       73,803 $ 13,112 73,803 $ 13,112      
Proceeds from issuance of stock in connection with business combination           $ 70,938        
Stockholders' Equity Note, Stock Split, Conversion Ratio           1.4559        
Subsequent Event [Member]                    
Nature Of Operations [Line Items]                    
Stockholders' Equity Note, Stock Split, Conversion Ratio 1.4559                  
U.S. Department of Energys Office of Manufacturing and Energy Supply Chains [Member] | Effective October 19,2022 [Member]                    
Nature Of Operations [Line Items]                    
Award Of Grant Amount       $ 50,000   $ 50,000        
Purchase Agreement [Member]                    
Nature Of Operations [Line Items]                    
As per agreement option to sell number of shares of common stock value                   $ 200,000
Committed Equity Financing Amount                   $ 200,000
Parent Company [Member]                    
Nature Of Operations [Line Items]                    
Percentage of ownership in the company               99.60% 99.70%  
[1] Restated for the retroactive application to reflect the effect of the Exchange Ratio established in the Business Combination as described in Note 1.