Revenue - Disaggregation of Revenue by Major Source (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	$ 42,698	$ 35,846
Total revenues from contracts accounted for as derivatives	403,106	565,669
Total Revenues	445,804	601,515
Ethanol
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	0	0
Total revenues from contracts accounted for as derivatives	286,286	448,323
Distillers grains
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	18,052	22,949
Total revenues from contracts accounted for as derivatives	49,569	63,615
Renewable corn oil
Disaggregation of Revenue [Line Items]
Total revenues from contracts accounted for as derivatives	35,717	31,070
Other
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	24,646	12,897
Total revenues from contracts accounted for as derivatives	31,534	22,661
Ethanol Production
Disaggregation of Revenue [Line Items]
Total Revenues	393,359	497,458
Agribusiness & Energy Services
Disaggregation of Revenue [Line Items]
Total Revenues	52,445	104,057
Operating Segments
Disaggregation of Revenue [Line Items]
Total Revenues	451,964	607,601
Operating Segments \| Ethanol Production
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	42,292	30,947
Total revenues from contracts accounted for as derivatives	351,067	466,825
Total Revenues	393,359	497,772
Operating Segments \| Ethanol Production \| Ethanol
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	0	0
Total revenues from contracts accounted for as derivatives	268,145	378,221
Operating Segments \| Ethanol Production \| Distillers grains
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	18,052	19,389
Total revenues from contracts accounted for as derivatives	47,205	57,534
Operating Segments \| Ethanol Production \| Renewable corn oil
Disaggregation of Revenue [Line Items]
Total revenues from contracts accounted for as derivatives	35,717	31,070
Operating Segments \| Ethanol Production \| Other
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	24,240	11,244
Total revenues from contracts accounted for as derivatives	0	0
Operating Segments \| Ethanol Production \| Intersegment revenues
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	0	314
Total revenues from contracts accounted for as derivatives	0	0
Operating Segments \| Agribusiness & Energy Services
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	477	5,281
Total revenues from contracts accounted for as derivatives	58,128	104,548
Total Revenues	58,605	109,829
Operating Segments \| Agribusiness & Energy Services \| Ethanol
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	0	0
Total revenues from contracts accounted for as derivatives	18,141	70,102
Operating Segments \| Agribusiness & Energy Services \| Distillers grains
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	0	3,560
Total revenues from contracts accounted for as derivatives	2,364	6,081
Operating Segments \| Agribusiness & Energy Services \| Renewable corn oil
Disaggregation of Revenue [Line Items]
Total revenues from contracts accounted for as derivatives	0	0
Operating Segments \| Agribusiness & Energy Services \| Other
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	406	1,653
Total revenues from contracts accounted for as derivatives	31,534	22,661
Operating Segments \| Agribusiness & Energy Services \| Intersegment revenues
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	71	68
Total revenues from contracts accounted for as derivatives	6,089	5,704
Eliminations
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	(71)	(382)
Total revenues from contracts accounted for as derivatives	(6,089)	(5,704)
Total Revenues	(6,160)	(6,086)
Eliminations \| Ethanol
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	0	0
Total revenues from contracts accounted for as derivatives	0	0
Eliminations \| Distillers grains
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	0	0
Total revenues from contracts accounted for as derivatives	0	0
Eliminations \| Renewable corn oil
Disaggregation of Revenue [Line Items]
Total revenues from contracts accounted for as derivatives	0	0
Eliminations \| Other
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	0	0
Total revenues from contracts accounted for as derivatives	0	0
Eliminations \| Intersegment revenues
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	(71)	(382)
Total revenues from contracts accounted for as derivatives	(6,089)	(5,704)
Eliminations \| Ethanol Production
Disaggregation of Revenue [Line Items]
Total Revenues	0	(314)
Eliminations \| Agribusiness & Energy Services
Disaggregation of Revenue [Line Items]
Total Revenues	$ (6,160)	$ (5,772)