Net Sales and Revenue - Schedule Disaggregated Revenue by Product (Details) - USD ($) $ in Thousands	3 Months Ended
Apr. 30, 2026	Apr. 30, 2025
Net Sales and Revenue [Abstract]
Revenue by product	$ 156,499	$ 158,340
Ethanol [Member]
Net Sales and Revenue [Abstract]
Revenue by product	119,881	124,397
Dried Distillers Grains [Member]
Net Sales and Revenue [Abstract]
Revenue by product	24,163	22,286
Distillers Corn Oil [Member]
Net Sales and Revenue [Abstract]
Revenue by product	12,956	9,879
Modified Distillers Grains [Member]
Net Sales and Revenue [Abstract]
Revenue by product	1,033	1,623
Derivative Financial Instruments (Losses) Gains [Member]
Net Sales and Revenue [Abstract]
Revenue by product	(1,576)	17
Other [Member]
Net Sales and Revenue [Abstract]
Revenue by product	$ 42	$ 138

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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