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Revenues - Disaggregated Revenue (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Disaggregation of Revenue [Line Items]    
Total revenue $ 10,244 $ 9,646
Collaborative Arrangement    
Disaggregation of Revenue [Line Items]    
Total revenue 2,223 1,088
Biorefining revenue    
Disaggregation of Revenue [Line Items]    
Total revenue 5,036 6,354
Licensing    
Disaggregation of Revenue [Line Items]    
Total revenue 580 553
Engineering and other services    
Disaggregation of Revenue [Line Items]    
Total revenue 4,456 5,801
Grant contributions - Engineering and other services    
Disaggregation of Revenue [Line Items]    
Total revenue 1,156 3,067
Joint development and contract research revenue    
Disaggregation of Revenue [Line Items]    
Total revenue 4,345 3,292
Joint development agreements    
Disaggregation of Revenue [Line Items]    
Total revenue 2,872 2,036
Contract research    
Disaggregation of Revenue [Line Items]    
Total revenue 1,473 1,256
CarbonSmart product    
Disaggregation of Revenue [Line Items]    
Total revenue $ 863 $ 0