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Document And Entity Information - shares	3 Months Ended
Document And Entity Information - shares	Apr. 30, 2020	Jun. 03, 2020
Document Information Line Items
Entity Registrant Name	REX AMERICAN RESOURCES Corp
Document Type	10-Q
Current Fiscal Year End Date	--01-31
Entity Common Stock, Shares Outstanding		6,184,646
Amendment Flag	false
Entity Central Index Key	0000744187
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Document Period End Date	Apr. 30, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Interactive Data Current	Yes

CONSOLIDATED BALANCE SHEETS - USD ($)	Apr. 30, 2020	Jan. 31, 2020
Current assets:
Cash and cash equivalents	$ 163,771,000	$ 179,658,000
Short-term investments	32,601,000	26,073,000
Restricted cash	1,410,000	1,113,000
Accounts receivable	2,772,000	12,969,000
Inventory	27,268,000	35,634,000
Refundable income taxes	9,689,000	6,029,000
Prepaid expenses and other	9,627,000	9,659,000
Total current assets	247,138,000	271,135,000
Property and equipment, net	163,132,000	163,327,000
Operating lease right-of-use assets	16,689,000	16,173,000
Deferred taxes	18,344,000	17,061,000
Other assets	753,000	342,000
Equity method investment	29,982,000	32,464,000
Total assets	476,038,000	500,502,000
Current liabilities:
Accounts payable, trade (includes $0.1 million and $0.7 million with related parties at April 30, 2020 and January 31, 2020, respectively)	7,386,000	18,900,000
Current operating lease liabilities	5,287,000	4,935,000
Accrued expenses and other current liabilities (includes $0.2 million and $0.5 million with related parties at April 30, 2020 and January 31, 2020, respectively)	7,196,000	7,764,000
Total current liabilities	19,869,000	31,599,000
Long-term liabilities:
Deferred taxes	3,868,000	4,334,000
Long-term operating lease liabilities	10,898,000	10,688,000
Other long-term liabilities	136,000	275,000
Total long-term liabilities	14,902,000	15,297,000
REX shareholders’ equity:
Common stock	299,000	299,000
Paid-in capital	148,821,000	148,789,000
Retained earnings	579,350,000	586,985,000
Treasury stock	(338,982,000)	(335,066,000)
Total REX shareholders’ equity	389,488,000	401,007,000
Noncontrolling interests	51,779,000	52,599,000
Total equity	441,267,000	453,606,000
Total liabilities and equity	$ 476,038,000	$ 500,502,000

CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($) $ in Thousands	Apr. 30, 2020	Jan. 31, 2020
Statement of Financial Position [Abstract]
Accounts payable, related parties	$ 100	$ 700
Accrued expenses, related parties	$ 200	$ 500

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 30, 2020	Apr. 30, 2019
Income Statement [Abstract]
Net sales and revenue	$ 83,250	$ 104,575
Cost of sales (includes $12.3 million and $46.7 million with related parties for the quarters ended April 30, 2020 and 2019, respectively)	92,580	100,929
Gross (loss) profit	(9,330)	3,646
Selling, general and administrative expenses (includes $(0.3) million and $0.1 million with related parties for the quarters ended April 30, 2020 and 2019, respectively)	(4,605)	(4,732)
Equity in (loss) income of unconsolidated affiliates	(477)	126
Interest and other income, (net)	669	1,127
(Loss) income before income taxes	(13,743)	167
Benefit for income taxes	5,313	3,548
Net (loss) income	(8,430)	3,715
Net loss (income) attributable to noncontrolling interests	795	(894)
Net (loss) income attributable to REX common shareholders	$ (7,635)	$ 2,821
Weighted average shares outstanding – basic and diluted (in Shares)	6,304	6,315
Basic and diluted net (loss) income per share attributable to REX common shareholders (in Dollars per share)	$ (1.21)	$ 0.45

CONSOLIDATED STATEMENTS OF OPERATIONS (Parentheticals) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2020	Apr. 30, 2019
Income Statement [Abstract]
Cost of sales, related parties	$ 12,300	$ 46,700
Selling, general and administrative expenses, related parties	$ (300)	$ 100

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Noncontrolling Interest [Member]	Total
Balance at Jan. 31, 2019	$ 299	$ (335,193)	$ 148,273	$ 579,558	$ 52,334	$ 445,271
Balance (in Shares) at Jan. 31, 2019	29,853	23,580
Balance at Apr. 30, 2019	$ 299	$ (335,186)	148,303	582,379	53,287	449,082
Balance (in Shares) at Apr. 30, 2019	29,853	23,580
Net (loss) income				2,821	894	3,715
Noncontrolling interests distribution and other					(87)	(87)
Capital contributions					146	146
Issuance of equity awards and stock based compensation expense		$ 7	30			37
Balance at Jan. 31, 2020	$ 299	$ (335,066)	148,789	586,985	52,599	453,606
Balance (in Shares) at Jan. 31, 2020	29,853	23,561
Balance at Apr. 30, 2020	$ 299	$ (338,982)	148,821	579,350	51,779	441,267
Balance (in Shares) at Apr. 30, 2020	29,853	23,639
Net (loss) income				$ (7,635)	(795)	(8,430)
Treasury stock acquired		$ (3,923)				(3,923)
Treasury stock acquired (in Shares)		78
Noncontrolling interests distribution and other					(35)	(35)
Capital contributions					$ 10	10
Issuance of equity awards and stock based compensation expense		$ 7	$ 32			$ 39

- Definition

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

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+ Details

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	3 Months Ended
CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	Apr. 30, 2020	Apr. 30, 2019
Cash flows from operating activities:
Net (loss) income including noncontrolling interests	$ (8,430,000)	$ 3,715,000
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Depreciation	5,315,000	6,292,000
Amortization of operating lease right-of-use assets	1,347,000	1,333,000
Loss (income) from equity method investments	477,000	(126,000)
Dividends received from equity method investee	2,005,000	0
Interest income from investments	(125,000)	(25,000)
Deferred income tax	(1,748,000)	(3,619,000)
Stock based compensation expense	39,000	128,000
Gain on sale of property and equipment – net	(3,000)
Changes in assets and liabilities:
Accounts receivable	10,197,000	(285,000)
Inventories	8,366,000	(1,673,000)
Other assets	(3,759,000)	(75,000)
Accounts payable, trade	(11,934,000)	(760,000)
Other liabilities	(2,008,000)	(3,365,000)
Net cash (used in) provided by operating activities	(261,000)	1,540,000
Cash flows from investing activities:
Capital expenditures	(4,700,000)	(632,000)
Purchase of short-term investments	(19,237,000)
Sale of short-term investments	12,834,000	15,000,000
Other	(278,000)	7,000
Net cash (used in) provided by investing activities	(11,381,000)	14,375,000
Cash flows from financing activities:
Treasury stock acquired	(3,923,000)
Payments to noncontrolling interests holders	(35,000)	(87,000)
Capital contributions from minority investor	10,000	146,000
Net cash (used in) provided by financing activities	(3,948,000)	59,000
Net (decrease) increase in cash, cash equivalents and restricted cash	(15,590,000)	15,974,000
Cash, cash equivalents and restricted cash, beginning of period	180,771,000	188,812,000
Cash, cash equivalents and restricted cash, end of period	165,181,000	204,786,000
Non cash investing activities – Accrued capital expenditures	457,000	147,000
Non cash financing activities – Stock awards accrued		91,000
Initial right-of-use assets and liabilities recorded upon adoption of ASC 842		20,918,000
Right-of-use assets acquired and liabilities incurred upon lease execution	1,863,000
Cash and cash equivalents	163,771,000	204,704,000
Restricted cash	$ 1,410,000	$ 82,000

Consolidated Condensed Financial Statements

3 Months Ended

Apr. 30, 2020

Condensed Financial Information Disclosure [Abstract]

Condensed Financial Information of Parent Company Only Disclosure [Text Block]

Note 1. Consolidated Condensed Financial Statements

References to the Company – References to “REX” or the “Company” in the consolidated condensed financial statements and in these notes to the consolidated condensed financial statements refer to REX American Resources Corporation, a Delaware corporation, and its majority and wholly owned subsidiaries.

The consolidated condensed financial statements included in this report have been prepared by the Company, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission and include, in the opinion of management, all adjustments necessary to state fairly the information set forth therein. Any such adjustments were of a normal recurring nature. Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been omitted pursuant to such rules and regulations, although the Company believes that the disclosures are adequate to make the information presented not misleading. Financial information as of January 31, 2020 included in these financial statements has been derived from the audited consolidated financial statements included in the Company’s Annual Report on Form 10-K for the year ended January 31, 2020 (fiscal year 2019). It is suggested that these unaudited consolidated condensed financial statements be read in conjunction with the consolidated financial statements and the notes thereto included in the Company’s Annual Report on Form 10-K for the year ended January 31, 2020. The results of operations for the interim periods are not necessarily indicative of the results to be expected for the year.

Basis of Consolidation – The consolidated condensed financial statements in this report include the operating results and financial position of the Company. All intercompany balances and transactions have been eliminated. The Company consolidates the results of its four majority owned subsidiaries. The Company includes the results of operations of One Earth Energy, LLC (“One Earth”) in its Consolidated Condensed Statements of Operations on a delayed basis of one month as One Earth has a fiscal year end of December 31.

Nature of Operations –The Company has two reportable segments: i) ethanol and by-products; and ii) refined coal. Within the ethanol and by-products segment, the Company has equity investments in three ethanol limited liability companies, two of which are majority ownership interests. Within the refined coal segment, the Company has a majority equity interest in one refined coal limited liability company.

Summary of Significant Accounting Policies

3 Months Ended

Apr. 30, 2020

Accounting Policies [Abstract]

Significant Accounting Policies [Text Block]

Note 2. Accounting Policies

The interim consolidated condensed financial statements have been prepared in accordance with the accounting policies described in the notes to the consolidated financial statements included in the Company’s fiscal year 2019 Annual Report on Form 10-K. While management believes that the procedures followed in the preparation of interim financial information are reasonable, the accuracy of some estimated amounts is dependent upon facts that will exist or calculations that will be accomplished at fiscal year-end. Examples of such estimates include accrued liabilities, such as management bonuses, and the provision for income taxes. Any adjustments pursuant to such estimates during the quarter were of a normal recurring nature. Actual results could differ from those estimates.

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 Recognition

For ethanol and by-products segment sales, the Company recognizes sales of ethanol, distillers grains and non-food grade 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. For refined coal segment sales, the Company recognizes sales of refined coal when obligations under the term of the contract with its customer are satisfied; this occurs when title and control of the product transfers to its customer, generally upon the coal leaving the refined coal plant. Refined coal sales are recorded net of the cost of coal as the Company purchases the coal feedstock from the customer to which the processed refined coal is sold.

Cost of Sales

Cost of sales includes depreciation, costs of raw materials, inbound freight charges, purchasing and receiving costs, inspection costs, other distribution expenses, warehousing costs, plant management, certain compensations costs and general facility overhead charges.

Selling, General and Administrative (“SG&A”) Expenses

The Company includes non-production related costs such as professional fees, selling charges and certain payroll in SG&A expenses.

Financial Instruments

Certain of the forward grain purchase and ethanol, distillers grains and non-food grade 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” (“ASC 815”) because these arrangements are for purchases of grain that will be delivered in quantities expected to be used by the Company and sales of ethanol, distillers grains and non-food grade corn oil quantities expected to be produced by the Company over a reasonable period of time in the normal course of business.

The Company uses derivative financial instruments (exchange-traded futures contracts) 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.

The Company determined that small changes in estimated “ordinary” income would result in significant changes in the estimated annual effective tax rate. Thus, the Company used a discrete effective tax rate method to calculate the provision or benefit for income taxes for the three months ended April 30, 2020 and 2019.

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 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 $0.3 million and received refunds of income taxes of approximately $0.2 million during the three months ended April 30, 2020. The Company paid no income taxes nor received refunds of income taxes during the three months ended April 30, 2019.

As of April 30, 2020 and January 31, 2020, total unrecognized tax benefits were approximately $7,353,000. Accrued penalties and interest were approximately $18,000 and approximately $17,000 at April 30, 2020 and January 31, 2020, respectively. If the Company were to prevail on all unrecognized tax benefits recorded, the provision for income taxes would be reduced by approximately $7.3 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.

Inventories

Inventories are carried at the lower of cost or net realizable value on a first-in, first-out basis. Inventory includes direct production costs and certain overhead costs such as depreciation, property taxes and utilities associated with producing ethanol and related by-products and refined coal. Inventory is written down for 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 Company recorded approximately $9.1 million and approximately $1.3 million of inventory write-downs in cost of sales at April 30, 2020 and January 31, 2020, respectively. Fluctuations in the write-down of inventory generally relate to the levels and composition of such inventory and changes in commodity prices at a given point in time. The components of inventory are as follows as of the dates presented (amounts in thousands):

	April 30, 2020			January 31, 2020

Ethanol and other finished goods		$	8,868		$	10,864
Work in process			2,605			3,258
Grain and other raw materials			15,795			21,512
Total		$	27,268		$	35,634

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 5 to 40 years for buildings and improvements, and 2 to 20 years for fixtures and equipment.

In accordance with ASC 360-10 “Impairment or Disposal of Long-Lived Assets”, the carrying value of long-lived assets is assessed for recoverability by management when changes in circumstances indicate that the carrying amount may not be recoverable. The Company concluded that the impact of the COVID-19 pandemic and other factors are an indicator that impairment may exist related to certain of its long lived assets. As a result, the Company performed an impairment analysis and determined that there was no impairment. Although it is not possible to reliably estimate the duration of the pandemic and its financial impact, a prolonged significant downturn in the economy could negatively impact the Company’s results of operations and significantly reduce its expectation for future sales, profits and cash flows. Such a reduction in expected future performance could result in the impairment of long-lived assets. There were no impairment charges in the first three months of fiscal years 2020 or 2019.

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.

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” are met. The excess of the carrying value over the underlying equity in the net assets of equity method investees is allocated to specific assets and liabilities. Investments in businesses that the Company does not control but for which it has the ability to exercise significant influence over operating and financial matters are accounted for using the equity method. The Company accounts for its investment in Big River Resources, LLC (“Big River”) using the equity method of accounting and includes the results on a delayed basis of one month as Big River has a fiscal year end of December 31.

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 Condensed Statements of Operations and a new cost basis in the investment is established.

Short-term investments are considered held to maturity, and, therefore are carried at amortized historical cost.

Comprehensive Income

The Company has no components of other comprehensive income, and therefore, comprehensive income equals net income.

Accounting Changes and Recently Issued Accounting Standards

In December 2019, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2019-12, “Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes”, which simplifies the accounting for income taxes by removing certain exceptions to the general principles in Topic 740. The Company will be required to adopt this update effective February 1, 2021. The Company has not determined the effect of this update on its consolidated financial statements.

Net Sales and Revenue

3 Months Ended

Apr. 30, 2020

Revenue from Contract with Customer [Abstract]

Revenue from Contract with Customer [Text Block]

Note 3. Net Sales and Revenue

The Company recognizes sales of products 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. Revenue is measured as the amount of consideration expected to be received in exchange for transferring goods. Sales, value added and other taxes the Company collects concurrent with revenue producing activities are excluded from net sales and revenue.

The majority of the Company’s sales have payment terms ranging from 5 to 10 days after transfer of control. The Company has determined that sales contracts do not generally include a significant financing component. The Company has not historically, and does not intend to, enter into sales contracts in which payment is due from a customer prior to transferring product to the customer. Thus, the Company does not record unearned revenue.

See Note 15 for disaggregation of net sales and revenue by operating segment and by product.

- Definition

The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-URI http://asc.fasb.org/topic&trid=49130388

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130556-203045

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130550-203045

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (d)
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130558-203045

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

+ Details

Leases

3 Months Ended

Apr. 30, 2020

Disclosure Text Block [Abstract]

Leases of Lessee Disclosure [Text Block]

Note 4. Leases

At April 30, 2020, the Company has lease agreements, as lessee, for railcars. All of the leases are accounted for as operating leases. The lease agreements do not contain a specified implicit interest rate; therefore, the Company’s estimated incremental borrowing rate was used to determine the present value of future minimum lease payments. The exercise of any lease renewal is at the Company’s sole discretion. The lease term for all of the Company’s leases includes the noncancelable period of the lease and any periods covered by renewal options that the Company is reasonably certain to exercise. Certain leases include rent escalations pre-set in the agreements, which are factored into the lease payment stream. The components of lease expense, classified as SG&A expenses on the Consolidated Condensed Statement of Operations are as follows:

	Three Months Ended			Three Months Ended
	April 30, 2020			April 30, 2019

Operating lease expense		$	1,686		$	1,609
Variable lease expense			131			193
Total lease expense		$	1,817		$	1,802

The following table is a summary of future minimum rentals on such leases at April 30, 2020 (amounts in thousands):

Years Ended January 31,	Minimum Rentals

Remainder of 2021		$	4,500
2022			5,376
2023			3,669
2024			2,503
2025			1,646
Thereafter			49
Total			17,743
Less: present value discount			1,558
Operating lease liabilities		$	16,185

At April 30, 2020, the weighted average remaining lease term is 3.5 years and the weighted average discount rate is 5.28% for the above leases.

The following table is a summary of future minimum rentals on such leases at January 31, 2020 (amounts in thousands):

Years Ended January 31,	Minimum Rentals

2021		$	5,668
2022			4,958
2023			3,251
2024			2,085
2025			1,228
Thereafter			29
Total			17,219
Less: present value discount			1,596
Operating lease liabilities		$	15,623

At January 31, 2020, the weighted average remaining lease term was 3.5 years and the weighted average discount rate was 5.46% for the above leases.

Fair Value

3 Months Ended

Apr. 30, 2020

Fair Value Disclosures [Abstract]

Fair Value Disclosures [Text Block]

Note 5. Fair Value

The Company applies ASC 820, “Fair Value Measurements and Disclosures” (“ASC 820”), which provides a framework for measuring fair value under accounting principles generally accepted in the United States of America. This accounting standard defines fair value as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date.

The Company determines the fair market values of its financial instruments based on the fair value hierarchy established by ASC 820 which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The standard describes three levels of inputs that may be used to measure fair values which are provided below. The Company carries certain cash equivalents, investments and derivative instruments at fair value.

The fair values of derivative assets and liabilities traded in the over-the-counter market are determined using quantitative models that require the use of multiple market inputs including interest rates, prices and indices to generate pricing and volatility factors, which are used to value the position. The predominance of market inputs are actively quoted and can be validated through external sources, including brokers, market transactions and third-party pricing services. Estimation risk is greater for derivative asset and liability positions that are either option-based or have longer maturity dates where observable market inputs are less readily available or are unobservable, in which case interest rate, price or index scenarios are extrapolated in order to determine the fair value. The fair values of derivative assets and liabilities include adjustments for market liquidity, counterparty credit quality, the Company’s own credit standing and other specific factors, where appropriate.

To ensure the prudent application of estimates and management judgment in determining the fair value of derivative assets and liabilities, investments and property and equipment, various processes and controls have been adopted, which include: (i) model validation that requires a review and approval for pricing, financial statement fair value determination and risk quantification; and (ii) periodic review and substantiation of profit and loss reporting for all derivative instruments. Financial assets and liabilities measured at fair value on a recurring basis at April 30, 2020 are summarized below (amounts in thousands):

	Level 1			Level 2			Level 3			Fair Value
Investment in cooperative (1)		$	-		$	-		$	341		$	341
Commodity futures (2)			-			293			-			293
Total assets		$	-		$	293		$	341		$	634

Forward purchase contracts (3)		$	-		$	242		$	-		$	242
Commodity futures (3)			-			773			-			773
Total liabilities		$	-		$	1,015		$	-		$	1,015

Financial assets and liabilities measured at fair value on a recurring basis at January 31, 2020 are summarized below (amounts in thousands):

	Level 1			Level 2			Level 3			Fair Value
Investment in cooperative (1)		$	-		$	-		$	341		$	341
Commodity futures (2)			-			352			-			352
Total assets		$	-		$	352		$	341		$	693

Forward purchase contract liability (3)		$	-		$	230		$	-		$	230

(1) The investment in cooperative is included in “Other assets” on the accompanying Consolidated Condensed Balance Sheets.

(2) The commodity futures asset is included in “Prepaid expenses and other current assets” on the accompanying Consolidated Condensed Balance Sheets.

(3) The forward purchase contract liability and the commodity futures liability are included in “Accrued expenses and other current liabilities” on the accompanying Consolidated Condensed Balance Sheets.

The Company determined the fair value of the investment in cooperative by using a discounted cash flow analysis on the expected cash flows. Inputs used in the analysis include the face value of the allocated equity amount, the projected term for repayment based upon a historical trend and a risk adjusted discount rate based on the expected compensation participants would demand because of the uncertainty of the future cash flows. The inherent risk and uncertainty associated with unobservable inputs could have a significant effect on the actual fair value of the investment.

There were no assets measured at fair value on a non-recurring basis at April 30, 2020 or January 31, 2020.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Property and Equipment

3 Months Ended

Apr. 30, 2020

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment Disclosure [Text Block]

Note 6. Property and Equipment

The components of property and equipment are as follows for the periods presented (amounts in thousands):

	April 30, 2020			January 31, 2020

Land and improvements		$	26,244		$	21,957
Buildings and improvements			23,643			23,643
Machinery, equipment and fixtures			301,049			300,972
Construction in progress			950			193
			351,886			346,765
Less: accumulated depreciation			(188,754)			(183,438)
Total		$	163,132		$	163,327

Accrued Expenses and Other Current Liabilities

3 Months Ended

Apr. 30, 2020

Disclosure Text Block Supplement [Abstract]

Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block]

Note 7. Accrued Expenses and Other Current Liabilities

The components of accrued expenses and other current liabilities are as follows for the periods presented (amounts in thousands):

	April 30, 2020		January 31, 2020

Accrued payroll and related items	$	604	$	1,152
Accrued utility charges		1,318		2,398
Accrued transportation related items		1,500		1,500
Accrued real estate taxes		1,962		1,755
Commodity futures		773		-
Forward purchase contracts		242		230
Accrued income taxes		29		68
Other		768		661
Total	$	7,196	$	7,764

Derivative Financial Instruments

3 Months Ended

Apr. 30, 2020

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Instruments and Hedging Activities Disclosure [Text Block]

Note 8. Derivative Financial Instruments

The Company is exposed to various market risks, including changes in commodity prices (raw materials and finished goods). To manage risks associated with the volatility of these natural business exposures, the Company enters into commodity agreements and forward purchase (corn and natural gas) and sale (ethanol, distillers grains and non-food grade corn oil) contracts. The Company does not purchase or sell derivative financial instruments for trading or speculative purposes. The Company does not purchase or sell derivative financial instruments for which a lack of marketplace quotations would require the use of fair value estimation techniques.

The following table provides information about the fair values of the Company’s derivative financial instruments (that are not accounted for under the “normal purchases and normal sales” scope exemption of ASC 815) and the line items on the Consolidated Condensed Balance Sheets in which the fair values are reflected (in thousands):

	Asset Derivatives				Liability Derivatives
	Fair Value				Fair Value
	April 30, 2020		January 31, 2020		April 30, 2020		January 31, 2020

Commodity futures (1)	$	293	$	352	$	773	$	-
Forward purchase contracts (2)		-		-		242		230
Total	$	293	$	352	$	1,015	$	230

(1) Commodity futures assets are included in prepaid expenses and other current assets. These contracts are short/sell positions for approximately 3.2 million bushels of corn at April 30, 2020. These contracts are short/sell positions for approximately 3.7 million bushels of corn and long/buy positions for approximately 2.2 million bushels of corn at January 31, 2020. Commodity futures liabilities are included in accrued expenses and other current liabilities. These contracts are short/sell positions for approximately 0.3 million bushels of corn, long/buy positions for approximately 3.8 million bushels of corn and long/buy positions for approximately 0.4 million gallons of ethanol at April 30, 2020.

(2) Forward purchase contracts liabilities are included in accrued expenses and other current liabilities. These contracts are for purchases of approximately 0.2 million bushels of corn at April 30, 2020 and 1.6 million bushels of corn at January 31, 2020.

As of April 30, 2020, and January 31, 2020, all of the derivative financial instruments held by the Company were subject to enforceable master netting arrangements. The Company’s accounting policy is to offset positions and amounts owed or owing with the same counterparty. As of April 30, 2020, and January 31, 2020, the gross positions of the enforceable master netting agreements are not significantly different from the net positions presented in the table above. Depending on the amount of an unrealized loss on a derivative contract held by the Company, the counterparty may require collateral to secure the Company’s derivative contract position. The Company was required to maintain collateral in the amount of approximately $1,410,000 and approximately $1,113,000 to secure the Company’s derivative position at April 30, 2020 and January 31, 2020, respectively.

See Note 5 which contains fair value information related to derivative financial instruments.

Gains on the Company’s derivative financial instruments of approximately $3,144,000 and approximately $369,000 for the first quarter of fiscal years 2020 and 2019, respectively, were included in cost of sales on the Consolidated Condensed Statements of Operations.

Investments

3 Months Ended

Apr. 30, 2020

Disclosure Text Block Supplement [Abstract]

Investment [Text Block]

Note 9. Investments

The following table summarizes the Company’s equity method investment at April 30, 2020 and January 31, 2020 (dollars in thousands):

Carrying Amount

Entity

Ownership Percentage

April 30, 2020

January 31, 2020

Big River

10.3%

$29,982

$32,464

Undistributed earnings of the Company’s equity method investee totaled approximately $10.0 million and approximately $12.4 million at April 30, 2020 and January 31, 2020, respectively. The Company received dividends from its equity method investee of approximately $2.0 million in the first quarter of fiscal year 2020. The company received no dividends from its equity method investee in the first quarter of fiscal year 2019.

Summarized financial information for the Company’s equity method investee is presented in the following table for the periods presented (amounts in thousands):

	Three Months Ended April 30,
	2020		2019

Net sales and revenue	$	197,632	$	184,069
Gross (loss) profit	$	(5,943)	$	1,569
(Loss) income from continuing operations	$	(4,626)	$	1,227
Net (loss) income	$	(4,626)	$	1,227

At April 30, 2020, the Company owned certificates of deposit that had an amortized cost, or carrying value, of approximately $32,601,000. The contractual maturity of these investments was less than one year. The yield to maturity rate was approximately 1.3%. Unrealized gains or losses were insignificant.

At January 31, 2020, the Company owned certificates of deposit that had an amortized cost, or carrying value, of approximately $26,073,000. The contractual maturity of these investments was less than one year. The yield to maturity rate was approximately 1.8%. Unrealized gains or losses were insignificant.

Employee Benefits

3 Months Ended

Apr. 30, 2020

Disclosure Text Block Supplement [Abstract]

Compensation and Employee Benefit Plans [Text Block]

Note 10. Employee Benefits

The Company maintains the REX 2015 Incentive Plan, approved by its shareholders, which reserves a total of 550,000 shares of common stock for issuance pursuant to its terms. The plan provides for the granting of shares of stock, including options to purchase shares of common stock, stock appreciation rights tied to the value of common stock, restricted stock, and restricted stock unit awards to eligible employees, non-employee directors and consultants. Since plan inception, the Company has only granted restricted stock awards. The Company measures share-based compensation grants at fair value on the grant date, adjusted for estimated forfeitures. The Company records noncash compensation expense related to liability and equity awards in its consolidated financial statements over the requisite service period on a straight-line basis. At April 30, 2020, 479,988 shares remain available for issuance under the Plan. As a component of their compensation, restricted stock has been granted to directors at the closing market price of REX common stock on the grant date. In addition, one third of executives’ incentive compensation is payable by an award of restricted stock based on the then closing market price of REX common stock on the grant date. The Company’s board of directors has determined that the grant date will be June 15^th, or the next business day if June 15^th is not a business day, for all grants of restricted stock.

At April 30, 2020 and January 31, 2020, unrecognized compensation cost related to nonvested restricted stock was approximately $180,000 and $220,000, respectively. The following tables summarize non-vested restricted stock award activity for the periods presented:

	Three Months Ended April 30, 2020

			Weighted		Weighted
			Average Grant		Average Remaining
	Non-Vested		Date Fair Value		Vesting Term
	Shares		(000’s)		(in years)

Non-Vested at January 31, 2020		28,576	$	2,193		2
Granted		-		-
Forfeited		-		-
Vested		-		-

Non-Vested at April 30, 2020		28,576	$	2,193		1

	Three Months Ended April 30, 2019

			Weighted		Weighted
			Average Grant		Average Remaining
	Non-Vested		Date Fair Value		Vesting Term
	Shares		(000’s)		(in years)

Non-Vested at January 31, 2019		38,036	$	2,935		2
Granted		-		-
Forfeited		-		-
Vested		-		-

Non-Vested at April 30, 2019		38,036	$	2,935		1

The above tables include 24,219 and 34,148 non-vested shares at April 30, 2020 and 2019, respectively, which are included in the number of weighted average shares outstanding used to determine basic and diluted earnings per share attributable to REX common shareholders. Such shares are treated, for accounting purposes, as being fully vested at the grant date as they were granted to recipients who were retirement eligible at the time of grant.

Income Taxes

3 Months Ended

Apr. 30, 2020

Income Tax Disclosure [Abstract]

Income Tax Disclosure [Text Block]

Note 11. Income Taxes

The Company’s income tax benefit was approximately 38.7% and approximately 2,124.6% for the three months ended April 30, 2020 and 2019, respectively. The fluctuation in the rate results primarily from the production tax credits the Company expects to receive associated with its refined coal segment relative to consolidated pre-tax income or loss. Through its refined coal operation, the Company earns production tax credits pursuant to IRC Section 45. The credits can be used to reduce future income tax liabilities for up to 20 years. The Company’s income tax benefit for the first quarter of fiscal year 2020 includes approximately $1.4 million related to the lengthening of a net operating loss carryback allowed by the recently passed CARES Act.

The Company files a U.S. federal income tax return and various state income tax returns. In general, the Company is no longer subject to U.S. federal, state or local income tax examinations by tax authorities for years ended January 31, 2014 and prior. A reconciliation of the beginning and ending amount of unrecognized tax benefits, including interest and penalties, is as follows (amounts in thousands):

	Three Months Ended April 30,
	2020		2019

Unrecognized tax benefits, beginning of period	$	7,370	$	9,232
Changes for prior years’ tax positions		1		66
Changes for current year tax positions		-		138
Unrecognized tax benefits, end of period	$	7,371	$	9,436

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References + Details

Commitments and Contingencies

3 Months Ended

Apr. 30, 2020

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies Disclosure [Text Block]

Note 12. Commitments and Contingencies

The Company is involved in various legal actions arising in the normal course of business. After taking into consideration legal counsels’ evaluations of such actions, management is of the opinion that their outcome will not have a material adverse effect on the Company’s Consolidated Condensed Financial Statements.

One Earth and NuGen have combined forward purchase contracts for approximately 6.7 million bushels of corn, the principal raw material for their ethanol plants, and they have combined forward purchase contracts for approximately 2,872,000 MmBtu (million british thermal units) of natural gas.

One Earth and NuGen have combined sales commitments for approximately 5.5 million gallons of ethanol, approximately 26,000 tons of distillers grains and approximately 4.2 million pounds of non-food grade corn oil.

The refined coal entity has various agreements (site license, operating agreements, etc.) containing payment terms based upon production of refined coal under which the Company is required to pay various fees. These fees totaled approximately $0.3 million and approximately $1.5 million in the first quarter of fiscal years 2020 and 2019, respectively.

Related-Party Transactions

3 Months Ended

Apr. 30, 2020

Note 13. Related-Party Transactions

During the first quarters of fiscal years 2020 and 2019, One Earth and NuGen purchased approximately $12.3 million and approximately $46.7 million, respectively, of corn (and other supplies) from minority equity investors and board members of those subsidiaries. The Company had amounts payable to related parties of approximately $0.1 million and approximately $0.7 million at April 30, 2020 and January 31, 2020, respectively.

During the first quarters of fiscal years 2020 and 2019, the Company recognized commission income of approximately $0.3 million and expense of approximately $0.1 million, respectively, payable to the minority investor in the refined coal entity. The commission income or expense is associated with the refined coal acquisition. The Company had accrued liabilities and accounts payable related to the commission income or expense of approximately $0.2 million and approximately $0.5 million at April 30, 2020 and January 31, 2020, respectively.

Segment Reporting

3 Months Ended

Apr. 30, 2020

Segment Reporting [Abstract]

Segment Reporting Disclosure [Text Block]

Note 14. Segment Reporting

The Company has two reportable segments: i) ethanol and by-products; and ii) refined coal. The Company evaluates the performance of each reportable segment based on segment profit. The following

tables summarize segment and other results and assets (amounts in thousands):

	Three Months Ended
	April 30,
	2020		2019
Net sales and revenue:
Ethanol and by-products	$	83,235	$	104,453
Refined coal ¹		15		122
Total net sales and revenue	$	83,250	$	104,575

¹The Company records sales in the refined coal segment net of the cost of coal as the Company purchases the coal feedstock from the customer to which refined coal is sold.

	Three Months Ended
	April 30,
	2020		2019
Segment gross (loss) profit:
Ethanol and by-products	$	(8,223)	$	6,115
Refined coal		(1,107)		(2,469)
Total gross (loss) profit	$	(9,330)	$	3,646

(Loss) income before income taxes:
Ethanol and by-products	$	(12,351)	$	3,205
Refined coal		(847)		(2,676)
Corporate and other		(545)		(362)
Total (loss) income before income taxes	$	(13,743)	$	167

Benefit (provision) for income taxes:
Ethanol and by-products	$	4,161	$	(486)
Refined coal		959		3,946
Corporate and other		193		88
Total benefit for income taxes	$	5,313	$	3,548

Segment (loss) profit (net of noncontrolling interests):
Ethanol and by-products	$	(7,433)	$	1,709
Refined coal		150		1,386
Corporate and other		(352)		(274)
Net (loss) income attributable to REX common shareholders	$	(7,635)	$	2,821

	April 30, 2020		January 31, 2020
Assets:
Ethanol and by-products	$	383,516	$	408,746
Refined coal		5,076		6,101
Corporate and other		87,446		85,655
Total assets	$	476,038	$	500,502

	Three Months Ended
	April 30,
	2020		2019
Sales of products, ethanol and by-products segment:
Ethanol	$	60,597	$	77,618
Dried distillers grains		18,918		18,674
Non-food grade corn oil		3,188		4,983
Modified distillers grains		457		3,140
Other		75		38
Total	$	83,235	$	104,453

Sales of products, refined coal segment:
Refined coal	$	15	$	122

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 31
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8924-108599

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8981-108599

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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-Subparagraph (f)
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8721-108599

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-URI http://asc.fasb.org/topic&trid=2134510

+ Details

Subsequent Event

3 Months Ended

Apr. 30, 2020

Subsequent Events [Abstract]

Subsequent Events [Text Block]

Note 15. Subsequent Event

On May 27, 2020, the Company resumed production operations at its One Earth ethanol plant, which had been idled since March 31, 2020.

Accounting Policies, by Policy (Policies)

3 Months Ended

Apr. 30, 2020

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

Cost of Goods and Service [Policy Text Block]

Cost of Sales

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 and certain payroll in SG&A expenses.

Fair Value of Financial Instruments, Policy [Policy Text Block]

Financial Instruments

Inventory, Policy [Policy Text Block]

Inventories

	April 30, 2020			January 31, 2020

Ethanol and other finished goods		$	8,868		$	10,864
Work in process			2,605			3,258
Grain and other raw materials			15,795			21,512
Total		$	27,268		$	35,634

Property, Plant and Equipment, Policy [Policy Text Block]

Property and Equipment

Investment, Policy [Policy Text Block]

Investments

Short-term investments are considered held to maturity, and, therefore are carried at amortized historical cost.

Comprehensive Income, Policy [Policy Text Block]

Comprehensive Income

The Company has no components of other comprehensive income, and therefore, comprehensive income equals net income.

New Accounting Pronouncements, Policy [Policy Text Block]

Accounting Changes and Recently Issued Accounting Standards

Summary of Significant Accounting Policies (Tables)

3 Months Ended

Apr. 30, 2020

Accounting Policies [Abstract]

Schedule of Inventory, Current [Table Text Block]

The components of inventory are as follows as of the dates presented (amounts in thousands):

	April 30, 2020			January 31, 2020

Ethanol and other finished goods		$	8,868		$	10,864
Work in process			2,605			3,258
Grain and other raw materials			15,795			21,512
Total		$	27,268		$	35,634

Leases (Tables)

3 Months Ended

Apr. 30, 2020

Disclosure Text Block [Abstract]

Lease, Cost [Table Text Block]

The components of lease expense, classified as SG&A expenses on the Consolidated Condensed Statement of Operations are as follows:

	Three Months Ended			Three Months Ended
	April 30, 2020			April 30, 2019

Operating lease expense		$	1,686		$	1,609
Variable lease expense			131			193
Total lease expense		$	1,817		$	1,802

Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

The following table is a summary of future minimum rentals on such leases at April 30, 2020 (amounts in thousands):

Years Ended January 31,	Minimum Rentals

Remainder of 2021		$	4,500
2022			5,376
2023			3,669
2024			2,503
2025			1,646
Thereafter			49
Total			17,743
Less: present value discount			1,558
Operating lease liabilities		$	16,185

Years Ended January 31,	Minimum Rentals

2021		$	5,668
2022			4,958
2023			3,251
2024			2,085
2025			1,228
Thereafter			29
Total			17,219
Less: present value discount			1,596
Operating lease liabilities		$	15,623

Fair Value (Tables)

3 Months Ended

Apr. 30, 2020

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

Financial assets and liabilities measured at fair value on a recurring basis at April 30, 2020 are summarized below (amounts in thousands):

	Level 1			Level 2			Level 3			Fair Value
Investment in cooperative (1)		$	-		$	-		$	341		$	341
Commodity futures (2)			-			293			-			293
Total assets		$	-		$	293		$	341		$	634

Forward purchase contracts (3)		$	-		$	242		$	-		$	242
Commodity futures (3)			-			773			-			773
Total liabilities		$	-		$	1,015		$	-		$	1,015

	Level 1			Level 2			Level 3			Fair Value
Investment in cooperative (1)		$	-		$	-		$	341		$	341
Commodity futures (2)			-			352			-			352
Total assets		$	-		$	352		$	341		$	693

Forward purchase contract liability (3)		$	-		$	230		$	-		$	230

(1) The investment in cooperative is included in “Other assets” on the accompanying Consolidated Condensed Balance Sheets.

(2) The commodity futures asset is included in “Prepaid expenses and other current assets” on the accompanying Consolidated Condensed Balance Sheets.

Property and Equipment (Tables)

3 Months Ended

Apr. 30, 2020

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment [Table Text Block]

The components of property and equipment are as follows for the periods presented (amounts in thousands):

	April 30, 2020			January 31, 2020

Land and improvements		$	26,244		$	21,957
Buildings and improvements			23,643			23,643
Machinery, equipment and fixtures			301,049			300,972
Construction in progress			950			193
			351,886			346,765
Less: accumulated depreciation			(188,754)			(183,438)
Total		$	163,132		$	163,327

Accrued Expenses and Other Current Liabilities (Tables)

3 Months Ended

Apr. 30, 2020

Disclosure Text Block Supplement [Abstract]

Schedule of Accrued Liabilities [Table Text Block]

The components of accrued expenses and other current liabilities are as follows for the periods presented (amounts in thousands):

	April 30, 2020		January 31, 2020

Accrued payroll and related items	$	604	$	1,152
Accrued utility charges		1,318		2,398
Accrued transportation related items		1,500		1,500
Accrued real estate taxes		1,962		1,755
Commodity futures		773		-
Forward purchase contracts		242		230
Accrued income taxes		29		68
Other		768		661
Total	$	7,196	$	7,764

Derivative Financial Instruments (Tables)

3 Months Ended

Apr. 30, 2020

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Assets at Fair Value [Table Text Block]

	Asset Derivatives				Liability Derivatives
	Fair Value				Fair Value
	April 30, 2020		January 31, 2020		April 30, 2020		January 31, 2020

Commodity futures (1)	$	293	$	352	$	773	$	-
Forward purchase contracts (2)		-		-		242		230
Total	$	293	$	352	$	1,015	$	230

Investments (Tables)

3 Months Ended

Apr. 30, 2020

Disclosure Text Block Supplement [Abstract]

Equity Method Investments [Table Text Block]

The following table summarizes the Company’s equity method investment at April 30, 2020 and January 31, 2020 (dollars in thousands):

Carrying Amount

Entity

Ownership Percentage

April 30, 2020

January 31, 2020

Big River

10.3%

$29,982

$32,464

Schedule of Financial Information for Equity Method Investments [Table Text Block]

Summarized financial information for the Company’s equity method investee is presented in the following table for the periods presented (amounts in thousands):

	Three Months Ended April 30,
	2020		2019

Net sales and revenue	$	197,632	$	184,069
Gross (loss) profit	$	(5,943)	$	1,569
(Loss) income from continuing operations	$	(4,626)	$	1,227
Net (loss) income	$	(4,626)	$	1,227

Employee Benefits (Tables)

3 Months Ended

Apr. 30, 2020

Disclosure Text Block Supplement [Abstract]

Nonvested Restricted Stock Shares Activity [Table Text Block]

The following tables summarize non-vested restricted stock award activity for the periods presented:

	Three Months Ended April 30, 2020

			Weighted		Weighted
			Average Grant		Average Remaining
	Non-Vested		Date Fair Value		Vesting Term
	Shares		(000’s)		(in years)

Non-Vested at January 31, 2020		28,576	$	2,193		2
Granted		-		-
Forfeited		-		-
Vested		-		-

Non-Vested at April 30, 2020		28,576	$	2,193		1

	Three Months Ended April 30, 2019

			Weighted		Weighted
			Average Grant		Average Remaining
	Non-Vested		Date Fair Value		Vesting Term
	Shares		(000’s)		(in years)

Non-Vested at January 31, 2019		38,036	$	2,935		2
Granted		-		-
Forfeited		-		-
Vested		-		-

Non-Vested at April 30, 2019		38,036	$	2,935		1

Income Taxes (Tables)

3 Months Ended

Apr. 30, 2020

Income Tax Disclosure [Abstract]

Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]

A reconciliation of the beginning and ending amount of unrecognized tax benefits, including interest and penalties, is as follows (amounts in thousands):

	Three Months Ended April 30,
	2020		2019

Unrecognized tax benefits, beginning of period	$	7,370	$	9,232
Changes for prior years’ tax positions		1		66
Changes for current year tax positions		-		138
Unrecognized tax benefits, end of period	$	7,371	$	9,436

Segment Reporting (Tables)

3 Months Ended

Apr. 30, 2020

Segment Reporting (Tables) [Line Items]

Schedule of Segment Reporting Information, by Segment [Table Text Block]

The following tables summarize segment and other results and assets (amounts in thousands):

	Three Months Ended
	April 30,
	2020		2019
Net sales and revenue:
Ethanol and by-products	$	83,235	$	104,453
Refined coal ¹		15		122
Total net sales and revenue	$	83,250	$	104,575

	Three Months Ended
	April 30,
	2020		2019
Segment gross (loss) profit:
Ethanol and by-products	$	(8,223)	$	6,115
Refined coal		(1,107)		(2,469)
Total gross (loss) profit	$	(9,330)	$	3,646

(Loss) income before income taxes:
Ethanol and by-products	$	(12,351)	$	3,205
Refined coal		(847)		(2,676)
Corporate and other		(545)		(362)
Total (loss) income before income taxes	$	(13,743)	$	167

Benefit (provision) for income taxes:
Ethanol and by-products	$	4,161	$	(486)
Refined coal		959		3,946
Corporate and other		193		88
Total benefit for income taxes	$	5,313	$	3,548

Segment (loss) profit (net of noncontrolling interests):
Ethanol and by-products	$	(7,433)	$	1,709
Refined coal		150		1,386
Corporate and other		(352)		(274)
Net (loss) income attributable to REX common shareholders	$	(7,635)	$	2,821

	Three Months Ended
	April 30,
	2020		2019
Sales of products, ethanol and by-products segment:
Ethanol	$	60,597	$	77,618
Dried distillers grains		18,918		18,674
Non-food grade corn oil		3,188		4,983
Modified distillers grains		457		3,140
Other		75		38
Total	$	83,235	$	104,453

Sales of products, refined coal segment:
Refined coal	$	15	$	122

¹The Company records sales in the refined coal segment net of the cost of coal as the Company purchases the coal feedstock from the customer to which refined coal is sold.

Assets [Member]

Segment Reporting (Tables) [Line Items]

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	April 30, 2020		January 31, 2020
Assets:
Ethanol and by-products	$	383,516	$	408,746
Refined coal		5,076		6,101
Corporate and other		87,446		85,655
Total assets	$	476,038	$	500,502

Consolidated Condensed Financial Statements (Details)	3 Months Ended
Consolidated Condensed Financial Statements (Details)	Apr. 30, 2020
Consolidated Condensed Financial Statements (Details) [Line Items]
Number of Consolidated Subsidiaries	4
Number of Reportable Segments	2
Ethanol [Member]
Consolidated Condensed Financial Statements (Details) [Line Items]
Number of Operating Segments	3
Majority-Owned Subsidiary, Unconsolidated [Member] \| Ethanol [Member]
Consolidated Condensed Financial Statements (Details) [Line Items]
Number of Operating Segments	2
Majority-Owned Subsidiary, Unconsolidated [Member] \| Refined Coal [Member]
Consolidated Condensed Financial Statements (Details) [Line Items]
Number of Operating Segments	1

Summary of Significant Accounting Policies (Details) - USD ($)	3 Months Ended		12 Months Ended
	Apr. 30, 2020	Apr. 30, 2019	Jan. 31, 2020
Summary of Significant Accounting Policies (Details) [Line Items]
Income Taxes Paid	$ 300,000	$ 0
Proceeds from Income Tax Refunds	200,000	$ 0
Unrecognized Tax Benefits	7,353,000		$ 7,353,000
Income Tax Examination, Penalties and Interest Accrued	18,000		17,000
Inventory Write-down	9,100,000		$ 1,300,000
Provision for Income Taxes [Member]
Summary of Significant Accounting Policies (Details) [Line Items]
Unrecognized Tax Benefits	$ (7,300,000)
Cost of Sales [Member]
Summary of Significant Accounting Policies (Details) [Line Items]
Maximum Percentage of Equity Ownership Interest Which May be Considered for Equity Method of Accounting	20.00%
Building and Building Improvements [Member] \| Minimum [Member]
Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	5
Building and Building Improvements [Member] \| Maximum [Member]
Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	40 years
Fixtures And Equipment [Member] \| Minimum [Member]
Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	2
Fixtures And Equipment [Member] \| Maximum [Member]
Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	20 years

Summary of Significant Accounting Policies (Details) - Schedule of Components of Inventory - USD ($) $ in Thousands	Apr. 30, 2020	Jan. 31, 2020
Schedule of Components of Inventory [Abstract]
Ethanol and other finished goods	$ 8,868	$ 10,864
Work in process	2,605	3,258
Grain and other raw materials	15,795	21,512
Total	$ 27,268	$ 35,634

Leases (Details)	Apr. 30, 2020	Jan. 31, 2020
Disclosure Text Block [Abstract]
Operating Lease, Weighted Average Remaining Lease Term	3 years 6 months	3 years 6 months
Operating Lease, Weighted Average Discount Rate, Percent	5.28%	5.46%

Leases (Details) - Schedule of Components of Lease Expense - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2020	Apr. 30, 2019
Schedule of Components of Lease Expense [Abstract]
Operating lease expense	$ 1,686	$ 1,609
Variable lease expense	131	193
Total lease expense	$ 1,817	$ 1,802

Leases (Details) - Schedule of Future Minimum Rental Payments for Operating Leases - USD ($) $ in Thousands	Apr. 30, 2020	Jan. 31, 2020
Schedule of Future Minimum Rental Payments for Operating Leases [Abstract]
2021	$ 4,500	$ 5,668
2022	5,376	4,958
2023	3,669	3,251
2024	2,503	2,085
2025	1,646	1,228
Thereafter	49	29
Total	17,743	17,219
Less: present value discount	1,558	1,596
Operating lease liabilities	$ 16,185	$ 15,623

Fair Value (Details) - USD ($)	3 Months Ended	12 Months Ended
Fair Value (Details) - USD ($)	Apr. 30, 2020	Jan. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value, Assets, Measured On Nonrecurring Basis Change In Unrealized Gain (Loss)	$ 0	$ 0

Fair Value (Details) - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis - USD ($)
$ in Thousands

Apr. 30, 2020

Jan. 31, 2020

Fair Value (Details) - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]

Commodity futures

$ 773

Forward purchase contracts

242

$ 230

Derivative Financial Instruments, Liabilities [Member]

Fair Value (Details) - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]

Commodity futures

^[1]

773

Total liabilities

1,015

Forward purchase contract liability

^[1]

230

Forward purchase contracts

^[1]

242

Fair Value, Inputs, Level 1 [Member] | Derivative Financial Instruments, Liabilities [Member]

Fair Value (Details) - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]

Commodity futures

^[1]

Forward purchase contract liability

^[1]

Forward purchase contracts

^[1]

Fair Value, Inputs, Level 2 [Member] | Derivative Financial Instruments, Liabilities [Member]

Fair Value (Details) - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]

Commodity futures

^[1]

773

Total liabilities

1,015

Forward purchase contract liability

^[1]

230

Forward purchase contracts

^[1]

242

Fair Value, Inputs, Level 3 [Member] | Derivative Financial Instruments, Liabilities [Member]

Fair Value (Details) - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]

Commodity futures

^[1]

Forward purchase contract liability

^[1]

Forward purchase contracts

^[1]

Derivative Financial Instruments, Assets [Member]

Fair Value (Details) - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]

Investment in cooperative

^[2]

341

Commodity futures

^[3]

293

352

Total assets

634

693

Derivative Financial Instruments, Assets [Member] | Fair Value, Inputs, Level 1 [Member]

Fair Value (Details) - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]

Investment in cooperative

^[2]

Commodity futures

^[3]

Derivative Financial Instruments, Assets [Member] | Fair Value, Inputs, Level 2 [Member]

Fair Value (Details) - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]

Investment in cooperative

^[2]

Commodity futures

^[3]

293

352

Total assets

293

352

Derivative Financial Instruments, Assets [Member] | Fair Value, Inputs, Level 3 [Member]

Fair Value (Details) - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]

Investment in cooperative

^[2]

341

Commodity futures

^[3]

Total assets

$ 341

[1]	The forward purchase contract liability and the commodity futures liability are included in "Accrued expenses and other current liabilities" on the accompanying Consolidated Condensed Balance Sheets.
[2]	The investment in cooperative is included in "Other assets" on the accompanying Consolidated Condensed Balance Sheets.
[3]	The commodity futures asset is included in "Prepaid expenses and other current assets" on the accompanying Consolidated Condensed Balance Sheets.

Property and Equipment (Details) - Schedule of Property and Equipment - USD ($) $ in Thousands	Apr. 30, 2020	Jan. 31, 2020
Schedule of Property and Equipment [Abstract]
Land and improvements	$ 26,244	$ 21,957
Buildings and improvements	23,643	23,643
Machinery, equipment and fixtures	301,049	300,972
Construction in progress	950	193
	351,886	346,765
Less: accumulated depreciation	(188,754)	(183,438)
Total	$ 163,132	$ 163,327

Accrued Expenses and Other Current Liabilities (Details) - Schedule of Accrued Expenses and Other Current Liabilities - USD ($) $ in Thousands	Apr. 30, 2020	Jan. 31, 2020
Schedule of Accrued Expenses and Other Current Liabilities [Abstract]
Accrued payroll and related items	$ 604	$ 1,152
Accrued utility charges	1,318	2,398
Accrued transportation related items	1,500	1,500
Accrued real estate taxes	1,962	1,755
Commodity futures	773
Forward purchase contracts	242	230
Accrued income taxes	29	68
Other	768	661
Total	$ 7,196	$ 7,764

Derivative Financial Instruments (Details) gal in Millions, bu in Millions	3 Months Ended
	Apr. 30, 2020 USD ($) bu gal	Apr. 30, 2019 USD ($)	Jan. 31, 2020 USD ($) bu
Derivative Financial Instruments (Details) [Line Items]
Debt Instrument, Collateral Amount (in Dollars) \| $	$ 1,410,000		$ 1,113,000
Gain (Loss) on Derivative Instruments, Net, Pretax (in Dollars) \| $	$ 3,144,000	$ 369,000
Liability [Member] \| Corn [Member]
Derivative Financial Instruments (Details) [Line Items]
Forward Purchase Contracts, Quantity	0.2		1.6
Short/Sell [Member] \| Assets [Member] \| Corn [Member]
Derivative Financial Instruments (Details) [Line Items]
Commodity Futures, Quantity	3.2		3.7
Short/Sell [Member] \| Liability [Member] \| Corn [Member]
Derivative Financial Instruments (Details) [Line Items]
Commodity Futures, Quantity	0.3
Long/Buy \| Assets [Member] \| Corn [Member]
Derivative Financial Instruments (Details) [Line Items]
Commodity Futures, Quantity			2.2
Long/Buy \| Liability [Member] \| Corn [Member]
Derivative Financial Instruments (Details) [Line Items]
Commodity Futures, Quantity	3.8
Long/Buy \| Liability [Member] \| Ethanol [Member]
Derivative Financial Instruments (Details) [Line Items]
Commodity Futures, Quantity \| gal	0.4

Derivative Financial Instruments (Details) - Schedule of Fair Values for Derivative Financial Instruments - USD ($)
$ in Thousands

Apr. 30, 2020

Jan. 31, 2020

Derivative Financial Instruments (Details) - Schedule of Fair Values for Derivative Financial Instruments [Line Items]

Asset Derivatives, Fair Value

$ 293

$ 352

Liability Derivatives, Fair Value

1,015

230

Commodity Contract [Member]

Derivative Financial Instruments (Details) - Schedule of Fair Values for Derivative Financial Instruments [Line Items]

Asset Derivatives, Fair Value

^[1]

293

352

Liability Derivatives, Fair Value

^[1]

773

Forward Contracts [Member]

Derivative Financial Instruments (Details) - Schedule of Fair Values for Derivative Financial Instruments [Line Items]

Asset Derivatives, Fair Value

^[2]

Liability Derivatives, Fair Value

^[2]

$ 242

$ 230

[1]

Commodity futures assets are included in prepaid expenses and other current assets. These contracts are short/sell positions for approximately 3.2 million bushels of corn at April 30, 2020. These contracts are short/sell positions for approximately 3.7 million bushels of corn and long/buy positions for approximately 2.2 million bushels of corn at January 31, 2020. Commodity futures liabilities are included in accrued expenses and other current liabilities. These contracts are short/sell positions for approximately 0.3 million bushels of corn, long/buy positions for approximately 3.8 million bushels of corn and long/buy positions for approximately 0.4 million gallons of ethanol at April 30, 2020.

[2]

Forward purchase contracts liabilities are included in accrued expenses and other current liabilities. These contracts are for purchases of approximately 0.2 million bushels of corn at April 30, 2020 and 1.6 million bushels of corn at January 31, 2020.

Investments (Details) - USD ($)	3 Months Ended
Investments (Details) - USD ($)	Apr. 30, 2020	Apr. 30, 2019	Jan. 31, 2020
Disclosure Text Block Supplement [Abstract]
Retained Earnings, Undistributed Earnings from Equity Method Investees	$ 10,000,000		$ 12,400,000
Proceeds from Equity Method Investment, Distribution	2,005,000	$ 0
Short-term Investments	$ 32,601,000		$ 26,073,000
Debt Securities, Held-to-Maturity, Weighted Average Yield, Maturity, Year One	1.30%		1.80%

Investments (Details) - Schedule of Equity Method Investments - USD ($) $ in Thousands	Apr. 30, 2020	Jan. 31, 2020
Schedule of Equity Method Investments [Abstract]
Big River	10.30%
Big River	$ 29,982	$ 32,464

Investments (Details) - Schedule of Financial Information For Equity Method Investment - Big River [Member] - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2020	Apr. 30, 2019
Investments (Details) - Schedule of Financial Information For Equity Method Investment [Line Items]
Net sales and revenue	$ 197,632	$ 184,069
Gross (loss) profit	(5,943)	1,569
(Loss) income from continuing operations	(4,626)	1,227
Net (loss) income	$ (4,626)	$ 1,227

- Definition

Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

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Amount after tax of income (loss) from continuing operations including portion attributable to the noncontrolling interest.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Employee Benefits (Details) - USD ($)	Apr. 30, 2020	Jan. 31, 2020	Apr. 30, 2019	Jan. 31, 2019
Employee Benefits (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	28,576	28,576	38,036	38,036
Rex Shareholders [Member]
Employee Benefits (Details) [Line Items]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount (in Dollars)	$ 180,000	$ 220,000
Share-based Payment Arrangement, Option [Member] \| Rex Shareholders [Member]
Employee Benefits (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	24,219		34,148
Stock Option Plans 2015 [Member] \| Share-based Payment Arrangement, Option [Member]
Employee Benefits (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	550,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	479,988

Employee Benefits (Details) - Schedule of Non-Vested Restricted Stock Award Activity - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2020	Apr. 30, 2019
Schedule of Non-Vested Restricted Stock Award Activity [Abstract]
Non-Vested Shares, Beginning of Period	28,576	38,036
Weighted Average Grant Date Fair Value, Beginning of Period	$ 2,193	$ 2,935
Weighted Average Vesting Term, Beginning of Period	2 years	2 years
Non-Vested Shares, End of Period	28,576	38,036
Weighted Average Grant Date Fair Value, End of Period	$ 2,193	$ 2,935
Weighted Average Vesting Term, End of Period	1 year	1 year

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
Income Taxes (Details) - USD ($) $ in Thousands	Apr. 30, 2020	Apr. 30, 2019
Income Taxes (Details) [Line Items]
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Depreciation, Percent	38.70%	2124.60%
Income Tax Expense (Benefit) (in Dollars)	$ 5,313	$ 3,548
CARES Act Net Operating Loss Carryback [Member]
Income Taxes (Details) [Line Items]
Income Tax Expense (Benefit) (in Dollars)	$ (1,400)

- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References + Details

Income Taxes (Details) - Schedule of Unrecognized Tax Benefits Roll Forward - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2020	Apr. 30, 2019
Schedule of Unrecognized Tax Benefits Roll Forward [Abstract]
Unrecognized tax benefits, beginning of period	$ 7,370	$ 9,232
Changes for prior years’ tax positions	1	66
Changes for current year tax positions		138
Unrecognized tax benefits, end of period	$ 7,371	$ 9,436

Commitments and Contingencies (Details) lb in Millions, gal in Millions, bu in Millions, $ in Millions	3 Months Ended
	Apr. 30, 2020 USD ($) MMBTU T lb bu gal	Apr. 30, 2019 USD ($)
One Earth Energy And Nu Gen Energy [Member]
Commitments and Contingencies (Details) [Line Items]
Quantity of Bushels under Forward Purchase Contract (in US Bushels) \| bu	6.7
Quantity Of Natural Gas Under Sales Commitment (in Millions of British Thermal Units) \| MMBTU	2,872,000
Quantity of Ethanol under Sales Commitment (in US Gallons) \| gal	5.5
Quantity of Distillers Grains Under Sales Commitment (in US Tons) \| T	26,000
Quantity of Non-food Grade Corn Oil Under Sales Commitments (in Pounds) \| lb	4.2
Refined Coal [Member]
Commitments and Contingencies (Details) [Line Items]
Fees Incurred By Subsidiary \| $	$ 0.3	$ 1.5

Related-Party Transactions (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2020	Apr. 30, 2019	Jan. 31, 2020
Related-Party Transactions (Details) [Line Items]
Accounts Payable, Related Parties, Current	$ 100		$ 700
One Earth Energy And Nu Gen Energy [Member]
Related-Party Transactions (Details) [Line Items]
Costs and Expenses, Related Party	12,300	$ 46,700
Accounts Payable, Related Parties, Current	100		700
Refined Coal [Member]
Related-Party Transactions (Details) [Line Items]
Payments for Commissions	300	$ 100
Accrued Liabilities for Commissions, Expense and Taxes	$ 200		$ 500

Segment Reporting (Details)	3 Months Ended
Segment Reporting (Details)	Apr. 30, 2020
Segment Reporting [Abstract]
Number of Reportable Segments	2

Segment Reporting (Details) - Schedule Of Segment Results And Assets - USD ($)
$ in Thousands

3 Months Ended

Apr. 30, 2020

Apr. 30, 2019

Segment Reporting Information [Line Items]

Net sales and revenue:

$ 83,250

$ 104,575

Segment gross profit (loss):

(9,330)

3,646

Income (loss) before income taxes:

(13,743)

167

Benefit (provision) for income taxes:

5,313

3,548

Segment profit (loss) (net of noncontrolling interests):

(7,635)

2,821

Sales of products, ethanol and by-products segment:

83,235

104,453

Ethanol [Member]

Segment Reporting Information [Line Items]

Net sales and revenue:

83,235

104,453

Segment gross profit (loss):

(8,223)

6,115

Income (loss) before income taxes:

(12,351)

3,205

Benefit (provision) for income taxes:

4,161

(486)

Segment profit (loss) (net of noncontrolling interests):

(7,433)

1,709

Sales of products, ethanol and by-products segment:

60,597

77,618

Refined Coal [Member]

Segment Reporting Information [Line Items]

Net sales and revenue:

^[1]

122

Segment gross profit (loss):

(1,107)

(2,469)

Income (loss) before income taxes:

(847)

(2,676)

Benefit (provision) for income taxes:

959

3,946

Segment profit (loss) (net of noncontrolling interests):

150

1,386

Sales of products, ethanol and by-products segment:

122

Corporate and Other [Member]

Segment Reporting Information [Line Items]

Income (loss) before income taxes:

(545)

(362)

Benefit (provision) for income taxes:

193

Segment profit (loss) (net of noncontrolling interests):

(352)

(274)

Dried Distillers Grains [Member]

Segment Reporting Information [Line Items]

Sales of products, ethanol and by-products segment:

18,918

18,674

Non-Food Grade Corn Oil [Member]

Segment Reporting Information [Line Items]

Sales of products, ethanol and by-products segment:

3,188

4,983

Modified Distillers Grains [Member]

Segment Reporting Information [Line Items]

Sales of products, ethanol and by-products segment:

457

3,140

Other Segments [Member]

Segment Reporting Information [Line Items]

Sales of products, ethanol and by-products segment:

$ 75

$ 38

[1]	The Company records sales in the refined coal segment net of the cost of coal as the Company purchases the coal feedstock from the customer to which refined coal is sold.

Segment Reporting (Details) - Schedule Of Segment Assets - USD ($) $ in Thousands	Apr. 30, 2020	Jan. 31, 2020
Segment Reporting Information [Line Items]
Assets	$ 476,038	$ 500,502
Ethanol [Member]
Segment Reporting Information [Line Items]
Assets	383,516	408,746
Refined Coal [Member]
Segment Reporting Information [Line Items]
Assets	5,076	6,101
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Assets	$ 87,446	$ 85,655

- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(11))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Topic 810
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
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Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
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-Section S99
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
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Reference 10: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Subsequent Event (Details)	3 Months Ended
Subsequent Event (Details)	Apr. 30, 2020
Subsequent Events [Abstract]
Subsequent Event, Description	On May 27, 2020, the Company resumed production operations at its One Earth ethanol plant, which had been idled since March 31, 2020.