| Accounting Policies, by Policy (Policies) | 3 Months Ended |
| Oct. 31, 2024 |
| Accounting Policies [Abstract] | |
| Cash and Cash Equivalents, Policy [Policy Text Block] | Cash and Cash Equivalents Cash and cash
equivalents includes bank deposits as well as short-term, highly liquid investments with original maturities of three months or less. |
| Revenue [Policy Text Block] | Revenue Recognition The Company recognizes sales of ethanol, distillers
grains and distillers corn oil when obligations under the terms of the respective contracts with customers are satisfied; this occurs
with the transfer of control of products, generally upon shipment from the ethanol plant or upon loading of the rail car used to transport
the products. |
| Cost of Goods and Service [Policy Text Block] | Cost of Sales Cost of sales includes depreciation, costs of raw
materials, third-party freight charges, purchasing and receiving costs, inspection costs, other distribution expenses, warehousing costs,
plant repair and maintenance costs, plant management, certain compensation costs and general facility overhead charges. |
| Selling, General and Administrative Expenses, Policy [Policy Text Block] | Selling, General and Administrative (“SG&A”)
Expenses The Company includes non-production related costs
such as professional fees, selling charges, operating lease expense, and certain payroll in SG&A expenses. |
| Fair Value of Financial Instruments, Policy [Policy Text Block] | Financial Instruments Certain of the forward corn and natural gas purchase
contracts and ethanol, distillers grains and distillers corn oil sale contracts are accounted for under the “normal purchases and
normal sales” scope exemption of Accounting Standards Codification (“ASC”) 815, “ Derivatives and Hedging The Company uses derivative financial instruments
(exchange-traded futures contracts and swaps) to manage a portion of the risk associated with changes in commodity prices, primarily related
to corn. The Company monitors and manages this exposure as part of its overall risk management policy. As such, the Company seeks to reduce
the potentially adverse effects that the volatility of these markets may have on its operating results. The Company may take hedging positions
in these commodities as one way to mitigate risk. While the Company attempts to link its hedging activities to purchase and sales activities,
there are situations in which these hedging activities can themselves result in losses. The Company does not hold or issue derivative
financial instruments for trading or speculative purposes. The changes in fair value of these derivative financial instruments are recognized
in current period earnings as the Company does not use hedge accounting. |
| Income Tax, Policy [Policy Text Block] | Income Taxes The Company applies an effective tax rate to interim
periods that is consistent with the Company’s estimated annual tax rate as adjusted for discrete items impacting the interim periods.
The Company provides for deferred tax liabilities and assets for the future tax consequences attributable to differences between the financial
statement carrying amounts of existing assets and liabilities and their respective tax basis and operating loss and tax credit carryforwards.
The Company provides for a valuation allowance if, based on the weight of available positive and negative evidence, it is more likely
than not that some or all of the deferred tax assets will not be realized. The Company paid income taxes of approximately $5.5 million
and $8.7 million and received no refunds during the nine months ended October 31, 2024 and 2023, respectively. As of October 31, 2024, and January 31, 2024, total
unrecognized tax benefits were approximately $18.9 million. Accrued penalties and interest were approximately $91,600 and approximately
$70,000 at October 31, 2024 and January 31, 2024, respectively. If the Company were to prevail on all unrecognized tax benefits recorded,
the provision for income taxes would be reduced by approximately $18.8 million. In addition, the impact of penalties and interest would
also benefit the effective tax rate. Interest and penalties associated with unrecognized tax benefits are recorded within income tax expense.
On a quarterly basis, the Company accrues for the effects of open uncertain tax positions and the related potential penalties and interest. |
| Inventory, Policy [Policy Text Block] | Inventory Inventories
are carried at the lower of cost or net realizable value. Cost for all inventories is determined using the first-in, first-out method.
Net realizable value is the estimated selling prices in the ordinary course of business, less reasonable predictable costs of completion,
disposal, and transportation. Inventory includes direct production costs and certain overhead costs such as depreciation, property taxes
and utilities related to producing ethanol and related by-products. Inventory is permanently written down in instances when cost exceeds
estimated net realizable value; such write-downs are based primarily upon commodity prices as the market value of inventory is often dependent
upon changes in commodity prices. The components of inventory are as follows as of
the dates presented (amounts in thousands):
October 31, January 31,
Ethanol and other finished goods $ 4,239 $ 9,102
Work in process 4,352 5,299
Corn and other raw materials 20,536 12,583
Total $ 29,127 $ 26,984 |
| Property, Plant and Equipment, Policy [Policy Text Block] | Property and Equipment Property and equipment is recorded at cost or the
fair value on the date of acquisition (for property and equipment acquired in a business combination). Depreciation is computed using
the straight-line method. Estimated useful lives are 15 to 40 years for buildings and improvements, and 3 to 20 years for fixtures and
equipment. In accordance with ASC 360-10 “ Impairment
or Disposal of Long-Lived Assets The Company tests for recoverability
of an asset group by comparing its carrying amount to its estimated undiscounted future cash flows. If the carrying amount exceeds its
estimated undiscounted future cash flows, the Company recognizes an impairment charge for the amount by which the asset group’s
carrying amount exceeds its fair value, if any. |
| Investment, Policy [Policy Text Block] | Investments The method of accounting applied to long-term investments,
whether consolidated, equity or cost, involves an evaluation of the significant terms of each investment that explicitly grant or suggest
evidence of control or influence over the operations of the investee and also includes the identification of any variable interests in
which the Company is the primary beneficiary. The Company accounts for investments in a limited liability company in which it has a less
than 20% ownership interest using the equity method of accounting when the factors discussed in ASC 323, “ Investments-Equity
Method and Joint Ventures The Company periodically evaluates its investments
for impairment due to declines in market value considered to be other than temporary. Such impairment evaluations include general economic
and company-specific evaluations. If the Company determines that a decline in market value is other than temporary, then a charge to earnings
is recorded in the Consolidated Statements of Operations and a new cost basis in the investment is established. Short-term investments, consisting of U.S. government
obligations, are considered held to maturity, and therefore are carried at amortized historical cost. |
| Reclassification, Comparability Adjustment [Policy Text Block] | Reclassifications Certain immaterial amounts previously presented
for prior periods have been reclassified to conform to the current presentation. The reclassification had no effect on net income, working
capital, or members’ equity previously reported. |
| New Accounting Pronouncements, Policy [Policy Text Block] | Recently Issued Accounting
Standards In November
2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Updated (“ASU”) 2023-07, Segment
Reporting (Topic 280): Improvements to Reportable Segment Disclosures In December
2023, the FASB issued ASU 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures”, to enhance the transparency
and decision usefulness of income tax disclosures. This ASU is effective for all entities that are subject to Topic 740 for fiscal years
beginning after December 15, 2024. Early adoption and retrospective application are permitted, but not required. The Company is currently
evaluating the impact of this ASU. |
