Revenue - Disaggregation of Revenue by Major Source (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	$ 45,870	$ 66,189	$ 88,568	$ 102,035
Total revenues from contracts accounted for as derivatives	400,354	486,640	803,460	1,052,309
Total Revenues	446,224	552,829	892,028	1,154,344
Ethanol
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	0	0	0	0
Total revenues from contracts accounted for as derivatives	312,995	389,259	599,281	837,582
Distillers grains
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	15,794	26,653	33,846	49,602
Total revenues from contracts accounted for as derivatives	42,413	56,981	91,982	120,596
Ultra-High Protein
Disaggregation of Revenue [Line Items]
Total revenues from contracts accounted for as derivatives	41,860	37,401	77,577	68,471
Other
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	30,076	39,536	54,722	52,433
Total revenues from contracts accounted for as derivatives	3,086	2,999	34,620	25,660
Ethanol Production
Disaggregation of Revenue [Line Items]
Total Revenues	410,768	526,954	804,127	1,024,412
Agribusiness & Energy Services
Disaggregation of Revenue [Line Items]
Total Revenues	35,456	25,875	87,901	129,932
Operating Segments
Disaggregation of Revenue [Line Items]
Total Revenues	450,314	558,684	902,278	1,166,285
Operating Segments \| Ethanol Production
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	45,456	62,964	87,748	93,911
Total revenues from contracts accounted for as derivatives	365,312	464,189	716,379	931,014
Total Revenues	410,768	527,153	804,127	1,024,925
Operating Segments \| Ethanol Production \| Ethanol
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	0	0	0	0
Total revenues from contracts accounted for as derivatives	281,299	373,039	549,444	751,260
Operating Segments \| Ethanol Production \| Distillers grains
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	15,794	23,708	33,846	43,097
Total revenues from contracts accounted for as derivatives	42,153	53,749	89,358	111,283
Operating Segments \| Ethanol Production \| Ultra-High Protein
Disaggregation of Revenue [Line Items]
Total revenues from contracts accounted for as derivatives	41,860	37,401	77,577	68,471
Operating Segments \| Ethanol Production \| Other
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	29,662	39,057	53,902	50,301
Total revenues from contracts accounted for as derivatives	0	0	0	0
Operating Segments \| Ethanol Production \| Intersegment revenues
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	0	199	0	513
Total revenues from contracts accounted for as derivatives	0	0	0	0
Operating Segments \| Agribusiness & Energy Services
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	465	3,485	942	8,766
Total revenues from contracts accounted for as derivatives	39,081	28,046	97,209	132,594
Total Revenues	39,546	31,531	98,151	141,360
Operating Segments \| Agribusiness & Energy Services \| Ethanol
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	0	0	0	0
Total revenues from contracts accounted for as derivatives	31,696	16,220	49,837	86,322
Operating Segments \| Agribusiness & Energy Services \| Distillers grains
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	0	2,945	0	6,505
Total revenues from contracts accounted for as derivatives	260	3,232	2,624	9,313
Operating Segments \| Agribusiness & Energy Services \| Ultra-High Protein
Disaggregation of Revenue [Line Items]
Total revenues from contracts accounted for as derivatives	0	0	0	0
Operating Segments \| Agribusiness & Energy Services \| Other
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	414	479	820	2,132
Total revenues from contracts accounted for as derivatives	3,086	2,999	34,620	25,660
Operating Segments \| Agribusiness & Energy Services \| Intersegment revenues
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	51	61	122	129
Total revenues from contracts accounted for as derivatives	4,039	5,595	10,128	11,299
Eliminations
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	(51)	(260)	(122)	(642)
Total revenues from contracts accounted for as derivatives	(4,039)	(5,595)	(10,128)	(11,299)
Total Revenues	(4,090)	(5,855)	(10,250)	(11,941)
Eliminations \| Ethanol
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	0	0	0	0
Total revenues from contracts accounted for as derivatives	0	0	0	0
Eliminations \| Distillers grains
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	0	0	0	0
Total revenues from contracts accounted for as derivatives	0	0	0	0
Eliminations \| Ultra-High Protein
Disaggregation of Revenue [Line Items]
Total revenues from contracts accounted for as derivatives	0	0	0	0
Eliminations \| Other
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	0	0	0	0
Total revenues from contracts accounted for as derivatives	0	0	0	0
Eliminations \| Intersegment revenues
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	(51)	(260)	(122)	(642)
Total revenues from contracts accounted for as derivatives	(4,039)	(5,595)	(10,128)	(11,299)
Eliminations \| Ethanol Production
Disaggregation of Revenue [Line Items]
Total Revenues	0	(199)	0	(513)
Eliminations \| Agribusiness & Energy Services
Disaggregation of Revenue [Line Items]
Total Revenues	$ (4,090)	$ (5,656)	$ (10,250)	$ (11,428)