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Debt - Stockholder Promissory Note (Details) - USD ($)
$ in Thousands
12 Months Ended
May 31, 2023
Dec. 31, 2023
Dec. 31, 2022
Mar. 31, 2024
Jul. 14, 2020
Debt          
Proceeds from stockholder promissory notes     $ 200    
Outstanding debt balance   $ 5,695   $ 1,695  
Stockholder Promissory Note          
Debt          
Interest rate         0.45%
Proceeds from stockholder promissory notes     200    
Principal outstanding balance     18,347    
Accrued unpaid interest     224    
Outstanding debt balance   0   $ 0  
Interest Expense   $ 30 $ 83    
Stockholder Promissory Note | Common Class A          
Debt          
Principal amount $ 18,247        
Total face value of promissory note 18,501        
Accrued interest $ 254        
Conversion of convertible debt (in shares) 142,028        
Stockholder Promissory Note | Majority stockholder          
Debt          
Principal amount         $ 29,718