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Inventories (Tables)
9 Months Ended
Sep. 30, 2023
Inventories [Abstract]  
Schedule of Inventories Inventories consisted primarily of bulk ethanol, specialty alcohols, corn, essential ingredients and unleaded fuel, and are valued at the lower of cost or net realizable value, with cost determined on a first-in, first-out basis. Inventory is net of a valuation adjustment of $0 and $4,612,000 as of September 30, 2023 and December 31, 2022, respectively. Inventory balances consisted of the following (in thousands):
   September 30, 2023   December 31, 2022 
Finished goods  $36,835   $47,736 
Work in progress   6,363    6,396 
Raw materials   12,502    11,197 
Other   1,392    1,299 
Total  $57,092   $66,628