Inventories - Components of Inventory Balances (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Inventory [Line Items]
Spare parts	$ 1,432	$ 1,262
Total inventories	4,135	2,751
Corn
Inventory [Line Items]
Raw materials	0	301
Enzymes and other inputs
Inventory [Line Items]
Raw materials	31	186
Catalyst materials
Inventory [Line Items]
Raw materials	203	265
SAF, Isooctane, Isooctene and other
Inventory [Line Items]
Finished goods	221	335
Isobutanol
Inventory [Line Items]
Finished goods	124	223
Work in process	0	83
Ethanol
Inventory [Line Items]
Finished goods	0	96
Jet Fuel
Inventory [Line Items]
Work in process	51	0
RNG
Inventory [Line Items]
RNG - environmental attributes	$ 2,073	$ 0

Inventory, Environmental Attributes, Net Of Reserves

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date for elements of machinery or equipment held for the purpose of replacing similar parts in the course of repair or maintenance.

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of unprocessed items to be consumed in the manufacturing or production process.

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