v3.26.1
Segment Reporting - Reportable Segment (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jul. 31, 2026
Jul. 31, 2025
Jul. 31, 2026
Jul. 31, 2025
Jan. 31, 2026
Segment Reporting [Abstract]          
Net sales and revenue $ 168,493 $ 158,563 $ 324,992 $ 316,903  
Production tax credit income 18,410 0 25,959 0 $ 31,723
Ethanol and by-products:          
Cost of sales 133,603 144,244 268,580 288,242  
Gross profit          
Gross profit 53,300 14,319 82,371 28,661 125,429
Depreciation and amortization expense          
Depreciation and amortization expense 6,640 5,754 13,350 10,773  
Income before taxes          
Income before taxes 48,118 12,097 74,233 25,723 120,295
Provision for income taxes (7,472) (2,769) (11,909) (5,723) (21,587)
Total consolidated net income 40,646 9,328 62,324 20,000 $ 98,708
Ethanol and By-Products [Member]          
Segment Reporting [Abstract]          
Net sales and revenue 501,789 388,439 927,998 819,082  
Production tax credit income 38,737 0 66,178 0  
Gross profit          
Gross profit 136,001 27,557 210,177 56,149  
Depreciation and amortization expense          
Depreciation and amortization expense 13,282 11,724 26,478 21,963  
Income before taxes          
Income before taxes 125,899 21,417 194,701 46,779  
Equity Method Ethanol Investment [Member]          
Segment Reporting [Abstract]          
Net sales and revenue (333,296) (229,876) (603,006) (502,179)  
Production tax credit income (20,327) 0 (40,219) 0  
Ethanol and by-products:          
Cost of sales (270,922) (216,638) (515,419) (474,691)  
Gross profit          
Gross profit (82,701) (13,238) (127,806) (27,488)  
Depreciation and amortization expense          
Depreciation and amortization expense (6,642) (5,970) (13,128) (11,190)  
Income before taxes          
Income before taxes (77,781) (9,320) (120,468) (21,056)  
Corn [Member]          
Ethanol and by-products:          
Cost of sales 293,021 253,382 557,620 533,747  
Other Cost of Sales [Member]          
Ethanol and by-products:          
Cost of sales [1] $ 111,504 $ 107,500 $ 226,379 $ 229,186  
[1] Expenses within “Other cost of sales” consist primarily of depreciation, other raw materials, third-party freight charges, purchasing and receiving costs, inspection costs, other distribution expenses, warehousing costs, plant repair and maintenance costs, production labor and related payroll costs, and general facility overhead charges.