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Share-Based Compensation - Common Stock Reserved (Details) - shares
Mar. 31, 2022
Mar. 21, 2022
Dec. 31, 2021
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Conversion of convertible preferred stock (in shares) 0   86,815,192 22,520,015
Warrants to purchase convertible preferred stock (in shares) 0   3,540,546 1,133,725
Warrants to purchase stock (in shares)     74,895 74,895
Shares available for grant (in shares)     363,095 1,861,856
Stock options issued and outstanding (in shares) 14,960,960   15,712,434 3,209,063
Total shares of common stock reserved 61,560,172   107,435,982 28,799,554
2018 Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares available for grant (in shares) 0   1,133,920  
Stock options issued and outstanding (in shares) 14,960,960   15,712,433  
Total shares of common stock reserved 0      
2022 Stock Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares available for grant (in shares) 12,899,504   0  
Stock options issued and outstanding (in shares) 0   0  
Total shares of common stock reserved 12,899,504      
2022 ESPP        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares available for grant (in shares) 4,072,000   0  
Private Placement Warrants        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Outstanding warrants (in shares) 7,386,667   0  
Public Warrants        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Outstanding warrants (in shares) 18,466,604 13,800,000 0  
Common Stock and Preferred Stock Warrants        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Warrants to purchase stock (in shares) 3,774,437   233,891