Revenue - Disaggregation of Revenue by Major Source (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	$ 35,846	$ 41,559
Total revenues from contracts accounted for as derivatives	565,669	555,655
Total Revenues	601,515	597,214
Ethanol
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	0	0
Total revenues from contracts accounted for as derivatives	448,323	423,487
Distillers grains
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	22,949	24,800
Total revenues from contracts accounted for as derivatives	63,615	87,613
Renewable corn oil
Disaggregation of Revenue [Line Items]
Total revenues from contracts accounted for as derivatives	31,070	34,160
Other
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	12,897	16,759
Total revenues from contracts accounted for as derivatives	22,661	10,395
Ethanol Production
Disaggregation of Revenue [Line Items]
Total Revenues	497,458	504,446
Agribusiness & Energy Services
Disaggregation of Revenue [Line Items]
Total Revenues	104,057	92,768
Operating Segments
Disaggregation of Revenue [Line Items]
Total Revenues	607,601	604,655
Operating Segments \| Ethanol Production
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	30,947	40,360
Total revenues from contracts accounted for as derivatives	466,825	465,299
Total Revenues	497,772	505,659
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	378,221	350,112
Operating Segments \| Ethanol Production \| Distillers grains
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	19,389	24,800
Total revenues from contracts accounted for as derivatives	57,534	77,923
Operating Segments \| Ethanol Production \| Renewable corn oil
Disaggregation of Revenue [Line Items]
Total revenues from contracts accounted for as derivatives	31,070	34,160
Operating Segments \| Ethanol Production \| Other
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	11,244	14,347
Total revenues from contracts accounted for as derivatives	0	3,104
Operating Segments \| Ethanol Production \| Intersegment revenues
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	314	1,213
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	5,281	2,501
Total revenues from contracts accounted for as derivatives	104,548	96,495
Total Revenues	109,829	98,996
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	70,102	73,375
Operating Segments \| Agribusiness & Energy Services \| Distillers grains
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	3,560	0
Total revenues from contracts accounted for as derivatives	6,081	9,690
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	1,653	2,412
Total revenues from contracts accounted for as derivatives	22,661	7,291
Operating Segments \| Agribusiness & Energy Services \| Intersegment revenues
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	68	89
Total revenues from contracts accounted for as derivatives	5,704	6,139
Eliminations
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	(382)	(1,302)
Total revenues from contracts accounted for as derivatives	(5,704)	(6,139)
Total Revenues	(6,086)	(7,441)
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	(382)	(1,302)
Total revenues from contracts accounted for as derivatives	(5,704)	(6,139)
Eliminations \| Ethanol Production
Disaggregation of Revenue [Line Items]
Total Revenues	(314)	(1,213)
Eliminations \| Agribusiness & Energy Services
Disaggregation of Revenue [Line Items]
Total Revenues	$ (5,772)	$ (6,228)