REX American Resources (REX) 10-K 27 Mar 17 2016 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
	Jan. 31, 2017	Mar. 24, 2017	Jul. 31, 2016
Document and Entity Information [Abstract]
Entity Registrant Name	REX AMERICAN RESOURCES Corp
Document Type	10-K
Current Fiscal Year End Date	--01-31
Entity Common Stock, Shares Outstanding		6,558,679
Entity Public Float			$ 368,483,290
Amendment Flag	false
Entity Central Index Key	744,187
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Accelerated Filer
Entity Well-known Seasoned Issuer	No
Document Period End Date	Jan. 31, 2017
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	FY

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jan. 31, 2017	Jan. 31, 2016
CURRENT ASSETS:
Cash and cash equivalents	$ 188,576	$ 135,765
Restricted cash	130	54
Accounts receivable	11,901	13,666
Inventory	17,057	17,178
Refundable income taxes	1,070	5,254
Prepaid expenses and other	6,959	6,407
Deferred taxes - net	824	1,036
Total current assets	226,517	179,360
Property and equipment - net	182,761	189,976
Other assets	6,913	6,642
Equity method investments	37,833	38,707
TOTAL ASSETS	454,024	414,685
CURRENT LIABILITIES:
Accounts payable – trade	9,171	10,212
Accrued expenses and other current liabilities	13,348	9,423
Total current liabilities	22,519	19,635
LONG TERM LIABILITIES:
Deferred taxes	41,135	38,304
Other long term liabilities	2,096	987
Total long term liabilities	43,231	39,291
EQUITY:
Common stock, 45,000 shares authorized, 29,853 shares issued at par	299	299
Paid in capital	145,767	144,844
Retained earnings	508,207	475,874
Treasury stock, 23,292 and 23,204 shares, respectively	(313,838)	(309,754)
Total REX shareholders’ equity	340,435	311,263
Noncontrolling interests	47,839	44,496
Total equity	388,274	355,759
TOTAL LIABILITIES AND EQUITY	$ 454,024	$ 414,685

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parentheticals) - shares shares in Thousands	Jan. 31, 2017	Jan. 31, 2016
Common stock, shares authorized	45,000	45,000
Common stock, shares issued	29,853	29,853
Treasury stock, shares	23,292	23,204

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Net sales and revenue	$ 453,799	$ 436,488	$ 572,230
Cost of sales	382,760	385,654	430,291
Gross profit	71,039	50,834	141,939
Selling, general and administrative expenses	(21,388)	(19,813)	(19,422)
Equity in income of unconsolidated ethanol affiliates	6,144	8,984	32,229
Gain on sale of investment	192	10,385
Interest and other income	596	625	368
Interest expense			(2,074)
Gain (loss) on disposal of real estate and property and equipment, net	328	503	(238)
Income from continuing operations before income taxes	56,911	51,518	152,802
Provision for income taxes	(17,393)	(14,108)	(49,649)
Income from continuing operations	39,518	37,410	103,153
Income from discontinued operations, net of tax			234
Gain on disposal of discontinued operations, net of tax			327
Net income	39,518	37,410	103,714
Net income attributable to noncontrolling interests	(7,185)	(5,974)	(16,377)
Net income attributable to REX common shareholders	$ 32,333	$ 31,436	$ 87,337
Weighted average shares outstanding – basic (in Shares)	6,587	7,297	8,109
Basic income per share from continuing operations attributable to REX common shareholders (in Dollars per share)	$ 4.91	$ 4.31	$ 10.70
Basic income per share from discontinued operations attributable to REX common shareholders (in Dollars per share)			0.03
Basic income per share on disposal of discontinued operations attributable to REX common shareholders (in Dollars per share)			0.04
Basic net income per share attributable to REX common shareholders (in Dollars per share)	$ 4.91	$ 4.31	$ 10.77
Weighted average shares outstanding – diluted (in Shares)	6,587	7,307	8,118
Diluted income per share from continuing operations attributable to REX common shareholders (in Dollars per share)	$ 4.91	$ 4.30	$ 10.69
Diluted income per share from discontinued operations attributable to REX common shareholders (in Dollars per share)			0.03
Diluted income per share on disposal of discontinued operations attributable to REX common shareholders (in Dollars per share)			0.04
Diluted net income per share attributable to REX common shareholders (in Dollars per share)	$ 4.91	$ 4.30	$ 10.76
Amounts attributable to REX common shareholders:
Income from continuing operations, net of tax	$ 32,333	$ 31,436	$ 86,776
Income from discontinued operations, net of tax			561
Net income	$ 32,333	$ 31,436	$ 87,337

CONSOLIDATED STATEMENTS OF SHAR

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($)	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Noncontrolling Interest [Member]	Total
Balance at Jan. 31, 2014	$ 299,000	$ (222,170,000)	$ 144,051,000	$ 357,101,000	$ 31,472,000	$ 310,753,000
Balance (in Shares) at Jan. 31, 2014	29,853,000	21,753,000
Net income				87,337,000	16,377,000	103,714,000
Treasury stock acquired		$ (18,238,000)				$ (18,238,000)
Treasury stock acquired (in Shares)		284,000				283,979
Noncontrolling interests distribution and other					(4,856,000)	$ (4,856,000)
Stock options and related tax effects		$ 851,000	740,000			1,591,000
Stock options and related tax effects (in Shares)		(83,000)
Balance at Jan. 31, 2015	$ 299,000	$ (239,557,000)	144,791,000	444,438,000	42,993,000	392,964,000
Balance (in Shares) at Jan. 31, 2015	29,853,000	21,954,000
Net income				31,436,000	5,974,000	37,410,000
Treasury stock acquired		$ (70,208,000)				$ (70,208,000)
Treasury stock acquired (in Shares)		1,254,000				1,254,344
Noncontrolling interests distribution and other					(4,471,000)	$ (4,471,000)
Stock options and related tax effects		$ 11,000	53,000			64,000
Stock options and related tax effects (in Shares)		(4,000)
Balance at Jan. 31, 2016	$ 299,000	$ (309,754,000)	144,844,000	475,874,000	44,496,000	355,759,000
Balance (in Shares) at Jan. 31, 2016	29,853,000	23,204,000
Net income				32,333,000	7,185,000	39,518,000
Treasury stock acquired		$ (4,353,000)				$ (4,353,000)
Treasury stock acquired (in Shares)		88,000				87,904
Noncontrolling interests distribution and other					(3,842,000)	$ (3,842,000)
Stock options and related tax effects		$ 269,000	923,000			1,192,000
Balance at Jan. 31, 2017	$ 299,000	$ (313,838,000)	$ 145,767,000	$ 508,207,000	$ 47,839,000	$ 388,274,000
Balance (in Shares) at Jan. 31, 2017	29,853,000	23,292,000

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 39,518,000	$ 37,410,000	$ 103,714,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	19,519,000	18,639,000	16,787,000
Impairment charges on real estate		125,000	68,000
Stock based compensation expense	1,314,000	64,000
Income from equity method investments	(6,144,000)	(8,984,000)	(32,229,000)
Dividends received from equity method investments	7,018,000	11,151,000	22,889,000
Gain on sale of investment	(192,000)	(10,385,000)
Derivative financial instruments			(1,141,000)
Gain on disposal of real estate and property and equipment	(328,000)	(503,000)	(275,000)
Deferred income tax	3,043,000	(4,196,000)	22,473,000
Excess tax benefit from stock option exercises			(441,000)
Changes in assets and liabilities:
Accounts receivable	(2,535,000)	(496,000)	7,692,000
Inventory	121,000	884,000	1,308,000
Prepaid expenses and other assets	(1,357,000)	(1,135,000)	(1,929,000)
Income taxes refundable	4,184,000	(2,235,000)	(1,985,000)
Accounts payable-trade	36,000	387,000	2,030,000
Accrued expenses and other liabilities	4,912,000	(536,000)	(1,745,000)
Net cash provided by operating activities	69,109,000	40,190,000	137,216,000
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(14,208,000)	(15,495,000)	(9,927,000)
Repayment of note receivable	24,000	23,000	6,000
Proceeds from sale of investment	4,492,000	45,476,000
Proceeds from sale of real estate and property and equipment	1,511,000	2,001,000	1,778,000
Restricted cash	(76,000)	(54,000)	500,000
Restricted investments and deposits	510,000	250,000	323,000
Net cash (used in) provided by investing activities	(7,747,000)	32,201,000	(7,320,000)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments of long term debt			(75,726,000)
Stock options exercised			931,000
Payments to noncontrolling interests holders	(3,842,000)	(4,471,000)	(4,856,000)
Excess tax benefit from stock option exercises			441,000
Treasury stock acquired	(4,709,000)	(69,852,000)	(18,138,000)
Net cash used in financing activities	(8,551,000)	(74,323,000)	(97,348,000)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	52,811,000	(1,932,000)	32,548,000
CASH AND CASH EQUIVALENTS-Beginning of year	135,765,000	137,697,000	105,149,000
CASH AND CASH EQUIVALENTS-End of year	188,576,000	135,765,000	137,697,000
Non cash financing activities-Cashless exercises of stock options			100,000
Non cash financing activities-Accrued common stock repurchase		356,000
Non cash financing activities-Equity awards issued	1,095,000
Non cash investing activities-Accrued capital expenditures	$ 342,000	$ 1,063,000	804,000
Non cash investing activities- Loan receivable granted in connection with sale of real estate			$ 475,000

SUMMARY OF SIGNIFICANT ACCOUNTI

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
	Jan. 31, 2017
Accounting Policies [Abstract]
Significant Accounting Policies [Text Block]	1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Principles of Consolidation – Fiscal Year – Segments – Segment Reporting Use of Estimates – Cash Equivalents – Concentrations of Risk – Inventory . January 31, 2017 2016 Ethanol and other finished goods $ 5,262 $ 3,105 Work in process 2,359 2,652 Grain and other raw materials 9,436 11,421 Total $ 17,057 $ 17,178 Property and Equipment – January 31, 2017 2016 Land and improvements $ 20,951 $ 21,598 Buildings and improvements 23,203 24,543 Machinery, equipment and fixtures 255,348 237,735 Construction in progress 1,046 6,094 300,548 289,970 Less: accumulated depreciation (117,787 ) (99,994 ) Total $ 182,761 $ 189,976 In accordance with ASC 360-05 “ 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 of an asset group 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. The Company generally determines the fair value of the asset group using a discounted cash flow model based on market participant assumptions (for income producing asset groups) or by obtaining appraisals based on the market approach and comparable market transactions (for non-income producing asset groups). Depreciation expense was approximately $19,519,000, $18,638,000 and $16,387,000 in fiscal years 2016, 2015 and 2014, respectively. Investments and Deposits – The Company periodically evaluates its investments for impairment due to declines in market value considered to be other than temporary. Such impairment evaluations include, in addition to persistent, declining market prices, 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. Revenue Recognition Cost of Sales – Selling, General and Administrative Expenses – Interest Expense – Financial Instruments 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 sale 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 used derivative financial instruments to manage its balance of fixed and variable rate debt. Interest rate swap agreements involve the exchange of fixed and variable rate interest payments and do not represent an actual exchange of the notional amounts between the parties. The swap agreement was not designated for hedge accounting pursuant to ASC 815. The interest rate swap was recorded at its fair value and the changes in fair values were recorded as gain or loss on derivative financial instruments in the Consolidated Statements of Operations. The Company paid settlements of interest rate swaps of approximately $1,142,000 in fiscal years 2014. Stock Compensation The Company had stock-based compensation plans under which stock options had been granted to directors, officers and key employees. These plans were terminated in fiscal year 2015. The total intrinsic value of options (granted pursuant to these terminated plans) exercised in the year ended January 31, 2015 was approximately $4.0 million resulting in tax deductions to realize benefits of approximately $0.8 million. Income Taxes Discontinued Operations Comprehensive Income New Accounting Pronouncements – Revenue from Contracts with Customers Effective February 1, 2018, the Company will be required to adopt Accounting Standards Update (“ASU”) No. 2015-17, “ Balance Sheet Classification of Deferred Taxes In January 2016, the FASB issued ASU No. 2016-01, “ Recognition and Measurement of financial Assets and financial Liabilities”. In February 2016, the FASB issued ASU 2016-02, “ Leases In March 2016, the FASB issued ASU 2016-09, “ Improvements to Employee Share-Based Payment Accounting In August 2016, the FASB issued ASU 2016-15 “ Statement of Cash Flows (Topic 230), Classification of Certain Cash Receipts and Cash Payments In November 2016, the FASB issued ASU 2016-18 “ Statement of Cash Flows (Topic 230), Restricted Cash

INVESTMENTS

INVESTMENTS	12 Months Ended
	Jan. 31, 2017
Investments and Deposits [Abstract]
Investments and Deposits [Text Block]	2. INVESTMENTS The Company’s equity method investment is accounted for under ASC 323 “ Investments-Equity Method and Joint Ventures Entity Ownership Percentage Carrying Amount January 31, 2017 Carrying Amount January 31, 2016 Big River Resources, LLC 9.7% $ 37,833 $ 38,707 The Company invested $20.0 million in Big River, a holding company for several entities, for a 9.7% ownership interest. Big River Resources West Burlington, LLC, a wholly owned subsidiary of Big River, operates an ethanol manufacturing plant in West Burlington, Iowa. During fiscal year 2016, the plant shipped 107 million gallons of ethanol. The plant has been in operation since 2004. Big River Resources Galva, LLC, a wholly owned subsidiary of Big River, operates an ethanol manufacturing plant in Galva, Illinois. During fiscal year 2016, the plant shipped 125 million gallons of ethanol. The plant has been in operation since 2009. Big River Resources United Energy, LLC, a 55.3% owned subsidiary of Big River, operates an ethanol manufacturing plant in Dyersville, Iowa. During fiscal year 2016, the plant shipped 128 million gallons of ethanol. Big River acquired a 50.5% ownership interest in this plant in 2009 and increased its ownership to 55.3% during fiscal year 2015. Big River Resources Boyceville, LLC, a wholly owned subsidiary of Big River, operates an ethanol manufacturing plant in Boyceville, Wisconsin. During fiscal year 2016, the plant shipped 57 million gallons of ethanol. Big River acquired its interest in this plant in 2011. The Company recorded income of approximately $6.1 million, $6.0 million and $18.2 million as its share of earnings from Big River during fiscal years 2016, 2015 and 2014, respectively. The Company received dividends of approximately $7.0 million, $7.5 million and $18.0 million from Big River during fiscal years 2016, 2015 and 2014, respectively. At January 31, 2017, the carrying value of the investment in Big River is approximately $37.8 million; the amount of underlying equity in the net assets of Big River is approximately $37.2 million. The Company invested $17.9 million in Patriot for a 27% ownership interest. Patriot operated an ethanol manufacturing plant in Annawan, Illinois. On June 1, 2015, Patriot and a subsidiary of CHS Inc. (“CHS”) completed a merger that resulted in CHS acquiring 100% of the ownership interest in Patriot. The Company received a cash payment of approximately $45.5 million at the closing, representing its proportionate share of the merger consideration for its 27% ownership interest. The total merger consideration was approximately $196 million in cash subject to certain adjustments and certain escrow holdbacks. In connection with this transaction, the Company recognized a gain of approximately $10.4 million during fiscal year 2015. During fiscal year 2016, the Company received proceeds of approximately $4.5 million as partial payment for certain escrow holdbacks and adjustments to the purchase price. As a result, the Company recognized approximately $0.2 million as gain on sale of investment during the first quarter of fiscal year 2016. At January 31, 2017, the Company has approximately $0.1 million in accounts receivable on the accompanying Consolidated Balance Sheets related to estimated escrow proceeds that were recognized as income in fiscal year 2015. The Company recorded income of approximately $2.9 million and $14.0 million as its share of earnings from Patriot during fiscal years 2015 and 2014, respectively. The Company received dividends of approximately $3.6 million and $4.9 million from Patriot during fiscal years 2015 and 2014, respectively. Undistributed earnings of equity method investees totaled approximately $17.8 million and $18.7 million at January 31, 2017 and 2016, respectively. Summarized financial information for the Company’s equity method investee as of its fiscal year end is presented in the following table (amounts in thousands): As of December 31, 2016 Big River Current assets $ 175,299 Non current assets 311,450 Total assets $ 486,749 Current liabilities $ 50,798 Long-term liabilities — Total liabilities $ 50,798 Noncontrolling interests $ 52,336 As of December 31, 2015 Big River Current assets $ 137,758 Non current assets 341,907 Total assets $ 479,665 Current liabilities $ 49,224 Long-term liabilities — Total liabilities $ 49,224 Noncontrolling interests $ 48,156 Summarized financial information for each of the Company’s equity method investees is presented in the following table for the years ended December 31, 2016, 2015 and 2014 (amounts in thousands): Year Ended December 31, 2016 Big River Net sales and revenue $ 851,434 Gross profit $ 88,841 Income from continuing operations $ 63,292 Net income $ 63,292 Year Ended December 31, 2015 Patriot (1) Big River Net sales and revenue $ 115,614 $ 863,554 Gross profit $ 14,424 $ 85,451 Income from continuing operations $ 11,100 $ 62,193 Net income $ 11,100 $ 62,193 (1) For Patriot, results are for the five month period ended May 31, 2015 as the Company’s equity interest in Patriot was sold June 1, 2015. Year Ended December 31, 2014 Patriot Big River Net sales and revenue $ 331,260 $ 1,184,505 Gross profit $ 59,980 $ 241,963 Income from continuing operations $ 52,875 $ 187,388 Net income $ 52,875 $ 187,388 Big River has debt agreements that limit and restrict amounts the entity can pay in the form of dividends or advances to owners. The restricted net assets of Big River at January 31, 2017 are approximately $278.7 million. At January 31, 2017, the Company’s proportionate share of restricted net assets of Big River is approximately $27.0 million.

FAIR VALUE

FAIR VALUE	12 Months Ended
	Jan. 31, 2017
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Text Block]	3. FAIR VALUE The Company applies ASC 820, which 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 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 financial instruments at fair value. Level 1 – Quoted prices in active markets for identical assets or liabilities. Level 1 assets and liabilities include debt and equity securities and derivative contracts that are traded in an active exchange market, as well as certain U.S. Treasury securities that are highly liquid and are actively traded in over-the-counter markets. Level 2 – Observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 2 assets and liabilities include derivative contracts whose value is determined using a pricing model with inputs that are observable in the market or can be derived principally or corroborated by observable market data. Level 3 – Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. Level 3 assets and liabilities include financial instruments whose value is determined using pricing models, discounted cash flow methods, or similar techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation. Unobservable inputs are developed based on the best information available, which may include the Company’s own data. 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. The fair values of property and equipment are determined by using various models that discount future expected cash flows. To ensure the prudent application of estimates and management judgment in determining the fair value of derivative assets and liabilities 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 at January 31, 2017 on a recurring basis are summarized below (amounts in thousands): Level 1 Level 2 Level 3 Total Fair Value Commodity futures (3) $ — $ 45 $ — $ 45 Forward purchase contracts asset (4) — 163 — 163 Investment in cooperative (1) — — 333 333 Total assets $ — $ 208 $ 333 $ 541 Forward purchase contracts liability (2) $ — $ 136 $ — $ 136 Financial assets and liabilities measured at fair value at January 31, 2016 on a recurring basis are summarized below (amounts in thousands): Level 1 Level 2 Level 3 Total Fair Value Investment in cooperative (1) $ — $ — $ 333 $ 333 Forward purchase contracts liability (2) $ — $ 312 $ — $ 312 (1) The investment in cooperative is included in “Other assets” on the accompanying Consolidated Balance Sheets. (2) The forward purchase contract liability is included in “Accrued expenses and other current liabilities” on the accompanying Consolidated Balance Sheets. (3) The commodity futures asset is included in “Prepaid expenses and other” on the accompanying Consolidated Balance Sheets. (4) The forward purchase contract asset is included in “Prepaid expenses and other” on the accompanying Consolidated 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. No other financial instruments were elected to be measured at fair value in accordance with ASC 470-20-25-21. The Company reviews its long-lived assets for impairment on at least an annual basis based on the carrying value of these assets. As a result of vacancies at owned real estate locations, the Company tested certain long-lived assets for impairment using a fair value measurement approach. The fair value measurement approach utilizes a number of significant unobservable inputs or Level 3 assumptions. These assumptions include, among others, the implied fair value of these assets using an income approach by preparing a discounted cash flow analysis and the implied fair value of these assets using recent sales data of comparable properties, and other subjective assumptions. Upon completion of its impairment analysis, which was performed at various times throughout fiscal year 2014, the Company determined that the carrying value of certain long-lived assets exceeded the fair value of these assets. Accordingly, in fiscal year 2014, the Company recorded long-lived asset impairment charges of approximately $68,000. There were no assets measured at fair value at January 31, 2016 and 2015 on a non-recurring basis.

OTHER ASSETS

OTHER ASSETS	12 Months Ended
	Jan. 31, 2017
Disclosure Text Block Supplement [Abstract]
Other Assets Disclosure [Text Block]	4. OTHER ASSETS The components of other noncurrent assets at January 31, 2017 and 2016 are as follows (amounts in thousands): January 31, 2017 2016 Real estate taxes refundable $ 5,923 $ 5,091 Deposits 155 664 Other 835 887 Total $ 6,913 $ 6,642 Real estate taxes refundable represent amounts due One Earth associated with refunds of previously paid taxes in connection with a tax increment financing arrangement with local taxing authorities. Deposits are with vendors and governmental authorities.

ACCRUED EXPENSES AND OTHER CURR

ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES	12 Months Ended
	Jan. 31, 2017
Disclosure Text Block Supplement [Abstract]
Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block]	5. ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES The components of accrued expenses and other current liabilities at January 31, 2017 and 2016 are as follows (amounts in thousands): January 31, 2017 2016 Accrued utility charges $ 2,414 $ 2,094 Accrued payroll and related items 4,279 3,760 Accrued real estate taxes 2,716 2,564 Accrued income taxes 2,120 — Other 1,819 1,005 Total $ 13,348 $ 9,423

NET INCOME PER SHARE FROM CONTI

NET INCOME PER SHARE FROM CONTINUING OPERATIONS	12 Months Ended
	Jan. 31, 2017
Earnings Per Share [Abstract]
Earnings Per Share [Text Block]	6. NET INCOME PER SHARE FROM CONTINUING OPERATIONS The Company reports net income per share in accordance with ASC 260, “ Earnings per Share The following table reconciles the basic and diluted net income per share amounts from continuing operations computations for each year presented for fiscal years 2015 and 2014 (amounts in thousands, except per-share amounts): 2015 Income Shares Per Share Basic net income per share from continuing operations attributable to REX common shareholders $ 31,436 7,297 $ 4.31 Effect of restricted stock 10 Diluted net income per share from continuing operations attributable to REX common shareholders $ 31,436 7,307 $ 4.30 2014 Income Shares Per Share Basic net income per share from continuing operations attributable to REX common shareholders $ 86,776 8,109 $ 10.70 Effect of stock options 9 Diluted net income per share from continuing operations attributable to REX common shareholders $ 86,776 8,118 $ 10.69

LEASES

LEASES	12 Months Ended
	Jan. 31, 2017
Leases [Abstract]
Leases of Lessor Disclosure [Text Block]	7. LEASES At January 31, 2017, the Company has lease agreements, as lessee, for rail cars and a natural gas pipeline. All of the leases are accounted for as operating leases. As of January 31, 2017, future minimum annual rentals on such leases are as follows (amounts in thousands): Years Ended Minimum 2018 $ 7,022 2019 6,108 2020 4,577 2021 2,778 2022 2,547 Thereafter 1,622 $ 24,654

COMMON STOCK

COMMON STOCK	12 Months Ended
	Jan. 31, 2017
Stockholders' Equity Note [Abstract]
Stockholders' Equity Note Disclosure [Text Block]	8. COMMON STOCK During fiscal years 2016, 2015 and 2014, the Company purchased 87,904 shares, 1,254,344 shares and 283,979 shares, respectively, of its common stock for approximately $4,353,000, $70,208,000 and $18,238,000, respectively. Included in these amounts are shares the Company received totaling 1,555 for the year ended January 31, 2015 as tenders of the exercise price of stock options exercised by certain officers and directors of the Company. The cost of these shares, determined as the fair market value on the date they were tendered, was approximately $100,000 for the year ended January 31, 2015. At January 31, 2017, the Company had prior authorization by its Board of Directors to purchase, in open market transactions, an additional 155,334 shares of its common stock. Information regarding the Company’s common stock is as follows (amounts in thousands): January 31, 2017 2016 Authorized shares 45,000 45,000 Issued shares 29,853 29,853 Outstanding shares 6,561 6,648

REVOLVING LINES OF CREDIT

REVOLVING LINES OF CREDIT	12 Months Ended
	Jan. 31, 2017
Debt Disclosure [Abstract]
Debt Disclosure [Text Block]	9. REVOLVING LINES OF CREDIT Effective April 1, 2016, One Earth and NuGen each entered into $10.0 million revolving loan facilities that mature April 1, 2017. Any borrowings will be secured by the inventory and accounts receivable of One Earth or NuGen, specific to which entity borrows money under these facilities. These revolving loan facilities are recourse only to One Earth and NuGen and not to REX American Resources Corporation or any of its other subsidiaries. Borrowings under these facilities bear interest at the one month LIBOR rate plus 250 basis points. Neither One Earth nor NuGen had outstanding borrowings on the revolving loans during the year ended January 31, 2017. One Earth and NuGen are also subject to certain financial covenants under the revolving loan facilities, including working capital requirements, should they borrow on the loans.

DERIVATIVE FINANCIAL INSTRUMENT

DERIVATIVE FINANCIAL INSTRUMENTS	12 Months Ended
	Jan. 31, 2017
Disclosure Text Block Supplement [Abstract]
Financial Instruments Disclosure [Text Block]	10. 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 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 changes in fair value of these derivative financial instruments are recognized in current period earnings as the Company does not use hedge accounting. The following table provides information about the fair values of the Company’s derivative financial instruments and the line items on the Consolidated Balance Sheets in which the fair values are reflected (in thousands): Asset Derivatives Liability Derivatives Fair Value at Fair Value at 2017 2016 2017 2016 Commodity futures (1) $ 45 $ — $ — $ — Forward purchase contracts (2) $ 163 $ — $ 136 $ 312 (1) Commodity futures are included in prepaid expense and other. These contracts are short/sell positions for approximately 0.7 million bushels of corn. (2) Forward purchase contracts assets are included in prepaid expenses and other while forward purchase contracts liabilities are included in accrued expenses and other current liabilities. These contracts are for purchases of approximately 5.3 million bushels of corn at January 31, 2017 and 0.7 million bushels of corn at January 31, 2016. As of January 31, 2017, 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 owed or owing with the same counterparty. As of January 31, 2017, 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. As of January 31, 2017, the Company was required to maintain collateral with the counterparty in the amount of approximately $131,000 to secure the Company’s derivative liability position. See Note 3 which contains fair value information related to derivative financial instruments. The following table provides information about gains recognized in income on the Company’s derivative financial instruments and the line items on the Consolidated Statements of Operations in which the fair values are reflected for fiscal years 2016, 2015 and 2014 (in thousands): 2016 2015 2014 Cost of sales $ (2,131 ) $ (382 ) $ —

EMPLOYEE BENEFITS

EMPLOYEE BENEFITS	12 Months Ended
	Jan. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	11. 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. 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 January 31, 2017, 525,330 shares remain available for issuance under the Plan. As a component of their compensation, restricted stock has been granted to directors at the market price of REX common stock on the date of the grant. In addition one third of executives’ incentive compensation is payable by an award of restricted stock based on the then market price of REX common stock. At January 31, 2017 and 2016, unrecognized compensation cost related to nonvested restricted stock was approximately $214,000 and $136,000, respectively. The following table summarizes non-vested restricted stock award activity for the fiscal years 2016 and 2015: 2016 Weighted Weighted Average Grant Average Remaining Non-Vested Date Fair Value Vesting Term Shares (000’s) (in years) Non-Vested at January 31, 2016 3,168 $ 200 2 Granted 21,502 1,269 Forfeited — — Vested 1,320 83 Non-Vested at January 31, 2017 23,350 $ 1,386 2 2015 Weighted Weighted Average Grant Remaining Vesting Non-Vested Date Fair Value Vesting Term Shares (000’s) (in years) Non-Vested at January 31, 2015 — $ — Granted 3,168 200 Forfeited — — Vested — — Non-Vested at January 31, 2016 3,168 $ 200 2 The following summarizes stock option activity for fiscal year 2014: 2014 Weighted Average Shares Exercise (000’s) Price Outstanding—Beginning of year 84 $ 12.37 Exercised (84 ) 12.37 Canceled or expired — — Outstanding—End of year — Exercisable—End of year —

COMMITMENTS

COMMITMENTS	12 Months Ended
	Jan. 31, 2017
Disclosure Text Block Supplement [Abstract]
Commitments Disclosure [Text Block]	12. COMMITMENTS One Earth and NuGen have combined forward purchase contracts for approximately 7.7 million bushels of corn, the principal raw material for their ethanol plants. They expect to take delivery of a majority of the corn through June 2017. One Earth and NuGen have combined sales commitments for approximately 59.7 million gallons of ethanol, 67,000 tons of distillers grains and 14.4 million pounds of non-food grade corn oil. They expect to deliver the ethanol, distillers grains and corn oil through June 2017. One Earth has entered into an agreement with an unrelated party for the use of a portion of the party’s natural gas pipeline. The term of the agreement is 10 years, and the amount is $4,380,000, which is paid over 120 equal monthly installments of $36,500. Payments began in February 2009. One Earth paid approximately $438,000 pursuant to the lease in each of fiscal years 2016, 2015 and 2014. One Earth and NuGen have entered into agreements with unrelated parties for the lease of railcars that will be used to ship ethanol and distillers grains. These leases expire on various dates through February 1, 2024. One Earth and NuGen pay a monthly lease amount per railcar. One Earth and NuGen combined incurred expenses of approximately $8,515,000, $7,221,000 and $7,024,000 pursuant to the leases in fiscal years 2016, 2015 and 2014, respectively. One Earth and NuGen each have a contract with an unrelated party (“Distillers Grains Marketer”) for distillers grains marketing services. Under the terms of the contracts, the Distillers Grains Marketers will purchase all of One Earth’s and NuGen’s distillers grains production during the term of the contracts. The contracts call for One Earth and NuGen to pay a fee per ton of distillers grains for the Distillers Grains Marketers’ services. The terms of the agreements are for one year and shall renew automatically for additional one year terms, unless either party sends notice to the other party of its intent to terminate the agreement at least 90 days prior to the expiration of the then current term of the agreement. One Earth and NuGen incurred fees of approximately $1,194,000, $1,169,000 and $1,190,000 in fiscal years 2016, 2015 and 2014, respectively, for these marketing services. One Earth has a grain origination agreement with Alliance Grain, a minority equity owner, under which it purchased 100% of its grain during fiscal years 2016, 2015 and 2014. One Earth pays to Alliance Grain a certain amount per bushel for procurement fees. The term of the agreement expires October 31, 2016, and shall renew automatically for additional one year terms, unless either party sends notice to the other party of its intent to terminate the agreement at least 180 days prior to the expiration of the then current term of the agreement.

INCOME TAXES

INCOME TAXES	12 Months Ended
	Jan. 31, 2017
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Text Block]	13. INCOME TAXES The provision (benefit) for income taxes for fiscal years 2016, 2015 and 2014 consists of the following (amounts in thousands): 2016 2015 2014 Federal: Current $ 12,197 $ 15,804 $ 23,452 Deferred 3,568 (2,867 ) 20,717 15,765 12,937 44,169 State and Local: Current 2,153 2,651 3,536 Deferred (525 ) (1,480 ) 1,944 1,628 1,171 5,480 Provision for income taxes $ 17,393 $ 14,108 $ 49,649 The tax effects of significant temporary differences representing deferred tax assets and liabilities are as follows as of January 31, 2017 and 2016 (amounts in thousands): January 31, 2017 2016 Assets: Accrued liabilities $ 539 $ 915 State net operating loss carryforward 412 1,147 Other items 513 198 Valuation allowance (417 ) (1,151 ) Total 1,047 1,109 Liabilities: Basis in pass through entities, including depreciation (41,080 ) (37,834 ) Other (278 ) (543 ) Total (41,358 ) (38,377 ) Net deferred tax liability $ (40,311 ) $ (37,268 ) The Company has a valuation allowance of approximately $417,000 at January 31, 2017. The Company decreased the valuation allowance by $734,000, $601,000 and $265,000 in fiscal years 2016, 2015 and 2014, respectively. These adjustments to the valuation allowance are a result of estimates of realizing certain future state tax benefits and federal capital loss carryforwards. The Company paid income taxes of approximately $7,090,000, $20,253,000 and $30,142,000 in fiscal years 2016, 2015 and 2014, respectively. The Company received refunds of income taxes of approximately $150,000, $132,000 and $53,000 in fiscal years 2016, 2015 and 2014, respectively. The effective income tax rate on consolidated pre-tax income or loss differs from the federal income tax statutory rate for fiscal years 2016, 2015 and 2014 as follows: 2016 2015 2014 Federal income tax at statutory rate 35.0 % 35.0 % 35.0 % State and local taxes, net of federal tax benefit 2.3 (1.3 ) 3.6 Net change in valuation allowance — (1.2 ) (0.2 ) Domestic production activities deduction (2.9 ) (1.7 ) (1.1 ) Uncertain tax positions 0.8 1.0 — Noncontrolling interest (4.6 ) (4.4 ) (4.0 ) Other — — (0.8 ) Total 30.6 % 27.4 % 32.5 % The Company files a U.S. federal income tax return and income tax returns in various states. In general, the Company is no longer subject to U.S. federal, state or local income tax examinations by tax authorities for fiscal years ended January 31, 2010 and prior. The Company applies the provisions of ASC 740-10-25-5 for uncertain tax positions. As of January 31, 2017, total unrecognized tax benefits were approximately $1,875,000, and accrued penalties and interest were approximately $221,000. If the Company were to prevail on all unrecognized tax benefits recorded, the provision for income taxes would be reduced by approximately $1,297,000. 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 and annual basis, the Company accrues for the effects of open uncertain tax positions and the related potential penalties and interest. It is reasonably possible that the amount of the unrecognized tax benefit with respect to certain unrecognized tax positions will increase or decrease during the next 12 months; however, the Company does not expect the change to have a material effect on results of operations or financial position. A reconciliation of the beginning and ending amount of unrecognized tax benefits, including interest and penalties, is as follows (dollars in thousands): Years Ended 2017 2016 Unrecognized tax benefits, beginning of year $ 987 $ 1,658 Changes for tax positions for prior years 1,109 (1,658 ) Changes for tax positions for current year — 987 Unrecognized tax benefits, end of year $ 2,096 $ 987

DISCONTINUED OPERATIONS

DISCONTINUED OPERATIONS	12 Months Ended
	Jan. 31, 2017
Discontinued Operations and Disposal Groups [Abstract]
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]	14. DISCONTINUED OPERATIONS During fiscal year 2009, the Company completed the exit of its retail business. Accordingly, certain operations of the Company’s former retail operations and certain sold properties had been classified as discontinued operations prior to the prospective adoption of ASU 2014-08 effective February 1, 2015. No items were reclassified as discontinued operations for fiscal years 2016 or 2015. Below is a table reflecting certain items of the Consolidated Statement of Operations that were reclassified as discontinued operations for fiscal year 2014 (amounts in thousands): 2014 Net sales and revenue $ 47 Cost of sales $ (321 ) Income before income taxes $ 368 Provision for income taxes (134 ) Income from discontinued operations, net of tax $ 234 Gain on disposal before provision for income taxes $ 513 Provision for income taxes (186 ) Gain on disposal of discontinued operations, net of tax $ 327

CONTINGENCIES

CONTINGENCIES	12 Months Ended
	Jan. 31, 2017
Loss Contingency [Abstract]
Contingencies Disclosure [Text Block]	15. CONTINGENCIES The Company is involved in various legal actions arising in the normal course of business. After taking into consideration legal counsels’ evaluation of such actions, management is of the opinion that their outcome will not have a material effect on the Company’s consolidated financial statements. There were no liabilities recorded at January 31, 2017 or 2016 as the Company did not believe that there was a probable and reasonably estimable loss associated with any legal contingencies.

NET SALES AND REVENUE

NET SALES AND REVENUE	12 Months Ended
	Jan. 31, 2017
Net Sales And Revenue [Abstract]
Net Sales And Revenue [Text Block]	16. NET SALES AND REVENUE The following table summarizes sales for each product and service group for the periods presented (amounts in thousands): Fiscal Year Product or Service Category 2016 2015 2014 Ethanol $ 358,349 $ 333,200 $ 452,831 Dried distillers grains 71,204 81,116 96,328 Non-food grade corn oil 18,518 15,510 16,985 Modified distillers grains 5,326 5,999 4,814 Other 402 663 1,272 Total $ 453,799 $ 436,488 $ 572,230 All of the Company’s ethanol and distillers grains are sold in the domestic market. The Company’s distillers grains marketers make all decisions with regard to where products they purchase from the Company are distributed.

QUARTERLY UNAUDITED INFORMATION

QUARTERLY UNAUDITED INFORMATION	12 Months Ended
	Jan. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Information [Text Block]	17. QUARTERLY UNAUDITED INFORMATION The following tables set forth the Company’s net sales and revenue, gross profit, net income and net income per share (basic and diluted) for each quarter during the last two fiscal years. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Quarters Ended (In Thousands, Except Per Share Amounts) April 30, July 31, October 31, January 31, 2016 2016 2016 2017 Net sales and revenue $ 100,222 $ 115,707 $ 116,283 $ 121,587 Gross profit 8,422 17,284 20,162 25,171 Net income 3,466 9,029 11,474 15,549 Net income attributable to REX common shareholders 2,838 8,176 8,938 12,381 Basic net income per share attributable to REX common shareholders $ 0.43 $ 1.24 $ 1.36 $ 1.88 Diluted net income per share attributable to REX common shareholders $ 0.43 $ 1.24 $ 1.36 $ 1.88 Quarters Ended (In Thousands, Except Per Share Amounts) April 30, July 31, October 31, January 31, 2015 2015 2015 2016 Net sales and revenue $ 105,197 $ 113,480 $ 110,584 $ 107,227 Gross profit 9,127 18,276 14,273 9,158 Net income 4,439 18,711 9,433 4,827 Net income attributable to REX common shareholders 3,927 16,367 7,456 3,686 Basic net income per share attributable to REX common shareholders (a) $ 0.50 $ 2.16 $ 1.08 $ 0.54 Diluted net income per share attributable to REX common shareholders (a) $ 0.50 $ 2.16 $ 1.08 $ 0.54 a) The total of the quarterly net income per share amounts do not equal the annual net income per share amounts due to the impact of varying amounts of shares outstanding during the year.

RELATED PARTIES

RELATED PARTIES	12 Months Ended
	Jan. 31, 2017
Related Party Transactions [Abstract]
Related Party Transactions Disclosure [Text Block]	18. RELATED PARTIES During fiscal years 2016, 2015 and 2014, One Earth and NuGen purchased approximately $148.5 million, $148.2 million and $164.7 million, respectively, of corn from minority equity investors. The Company had amounts payable to related parties for corn purchases of approximately $1.7 million and $1.2 million at January 31, 2017, and 2016, respectively.

Schedule II - VALUATION AND QUA

Schedule II - VALUATION AND QUALIFYING ACCOUNTS	12 Months Ended
	Jan. 31, 2017
Valuation and Qualifying Accounts [Abstract]
Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]	Schedule II - VALUATION AND QUALIFYING ACCOUNTS FOR THE YEARS ENDED JANUARY 31, 2017, 2016 AND 2015 (Amounts in thousands) Additions Deductions Balance Charged to Charges for Balance Beginning Cost and Which Reserves End of Year Expenses Were Created of Year 2017: Deferred tax valuation allowance $ 1,151 $ – $ 734 $ 417 2016: Deferred tax valuation allowance $ 1,752 $ – $ 601 $ 1,151 2015: Deferred tax valuation allowance $ 2,017 $ – $ 265 $ 1,752

Accounting Policies, by Policy

Accounting Policies, by Policy (Policies)	12 Months Ended
	Jan. 31, 2017
Accounting Policies [Abstract]
Consolidation, Policy [Policy Text Block]	Principles of Consolidation –
Fiscal Period, Policy [Policy Text Block]	Fiscal Year –
Segment Reporting, Policy [Policy Text Block]	Segments – Segment Reporting
Use of Estimates, Policy [Policy Text Block]	Use of Estimates –
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash Equivalents –
Concentration Risk, Credit Risk, Policy [Policy Text Block]	Concentrations of Risk –
Inventory, Policy [Policy Text Block]	Inventory . January 31, 2017 2016 Ethanol and other finished goods $ 5,262 $ 3,105 Work in process 2,359 2,652 Grain and other raw materials 9,436 11,421 Total $ 17,057 $ 17,178
Property, Plant and Equipment, Policy [Policy Text Block]	Property and Equipment – January 31, 2017 2016 Land and improvements $ 20,951 $ 21,598 Buildings and improvements 23,203 24,543 Machinery, equipment and fixtures 255,348 237,735 Construction in progress 1,046 6,094 300,548 289,970 Less: accumulated depreciation (117,787 ) (99,994 ) Total $ 182,761 $ 189,976 In accordance with ASC 360-05 “ 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 of an asset group 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. The Company generally determines the fair value of the asset group using a discounted cash flow model based on market participant assumptions (for income producing asset groups) or by obtaining appraisals based on the market approach and comparable market transactions (for non-income producing asset groups). Depreciation expense was approximately $19,519,000, $18,638,000 and $16,387,000 in fiscal years 2016, 2015 and 2014, respectively.
Investment, Policy [Policy Text Block]	Investments and Deposits – The Company periodically evaluates its investments for impairment due to declines in market value considered to be other than temporary. Such impairment evaluations include, in addition to persistent, declining market prices, 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.
Revenue Recognition, Policy [Policy Text Block]	Revenue Recognition
Cost of Sales, Policy [Policy Text Block]	Cost of Sales –
Selling, General and Administrative Expenses, Policy [Policy Text Block]	Selling, General and Administrative Expenses –
Interest Expense, Policy [Policy Text Block]	Interest Expense –
Fair Value of Financial Instruments, Policy [Policy Text Block]	Financial Instruments 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 sale 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 used derivative financial instruments to manage its balance of fixed and variable rate debt. Interest rate swap agreements involve the exchange of fixed and variable rate interest payments and do not represent an actual exchange of the notional amounts between the parties. The swap agreement was not designated for hedge accounting pursuant to ASC 815. The interest rate swap was recorded at its fair value and the changes in fair values were recorded as gain or loss on derivative financial instruments in the Consolidated Statements of Operations. The Company paid settlements of interest rate swaps of approximately $1,142,000 in fiscal years 2014.
Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]	Stock Compensation The Company had stock-based compensation plans under which stock options had been granted to directors, officers and key employees. These plans were terminated in fiscal year 2015. The total intrinsic value of options (granted pursuant to these terminated plans) exercised in the year ended January 31, 2015 was approximately $4.0 million resulting in tax deductions to realize benefits of approximately $0.8 million.
Income Tax, Policy [Policy Text Block]	Income Taxes
Discontinued Operation [Policy Text Block]	Discontinued Operations
Comprehensive Income, Policy [Policy Text Block]	Comprehensive Income
New Accounting Pronouncements, Policy [Policy Text Block]	New Accounting Pronouncements – Revenue from Contracts with Customers Effective February 1, 2018, the Company will be required to adopt Accounting Standards Update (“ASU”) No. 2015-17, “ Balance Sheet Classification of Deferred Taxes In January 2016, the FASB issued ASU No. 2016-01, “ Recognition and Measurement of financial Assets and financial Liabilities”. In February 2016, the FASB issued ASU 2016-02, “ Leases In March 2016, the FASB issued ASU 2016-09, “ Improvements to Employee Share-Based Payment Accounting

SUMMARY OF SIGNIFICANT ACCOUN27

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)	12 Months Ended
	Jan. 31, 2017
Accounting Policies [Abstract]
Schedule of Inventory, Current [Table Text Block]	The components of inventory at January 31, 2017, and January 31, 2016 are as follows (amounts in thousands): January 31, 2017 2016 Ethanol and other finished goods $ 5,262 $ 3,105 Work in process 2,359 2,652 Grain and other raw materials 9,436 11,421 Total $ 17,057 $ 17,178
Property, Plant and Equipment [Table Text Block]	The components of property and equipment at January 31, 2017 and 2016 are as follows (amounts in thousands): January 31, 2017 2016 Land and improvements $ 20,951 $ 21,598 Buildings and improvements 23,203 24,543 Machinery, equipment and fixtures 255,348 237,735 Construction in progress 1,046 6,094 300,548 289,970 Less: accumulated depreciation (117,787 ) (99,994 ) Total $ 182,761 $ 189,976

INVESTMENTS (Tables)

INVESTMENTS (Tables)	12 Months Ended
	Jan. 31, 2017
Investments and Deposits [Abstract]
Equity Method Investments [Table Text Block]	The following table summarizes the investment at January 31, 2017 and 2016 (amounts in thousands): Entity Ownership Percentage Carrying Amount January 31, 2017 Carrying Amount January 31, 2016 Big River Resources, LLC 9.7% $ 37,833 $ 38,707
Condensed Balance Sheet [Table Text Block]	Summarized financial information for the Company’s equity method investee as of its fiscal year end is presented in the following table (amounts in thousands): Big River Current assets $ 175,299 Non current assets 311,450 Total assets $ 486,749 Current liabilities $ 50,798 Long-term liabilities — Total liabilities $ 50,798 Noncontrolling interests $ 52,336 Big River Current assets $ 137,758 Non current assets 341,907 Total assets $ 479,665 Current liabilities $ 49,224 Long-term liabilities — Total liabilities $ 49,224 Noncontrolling interests $ 48,156
Schedule of Financial Information for Equity Method Investments [Table Text Block]	Summarized financial information for each of the Company’s equity method investees is presented in the following table for the years ended December 31, 2016, 2015 and 2014 (amounts in thousands): Big River Net sales and revenue $ 851,434 Gross profit $ 88,841 Income from continuing operations $ 63,292 Net income $ 63,292 Patriot (1) Big River Net sales and revenue $ 115,614 $ 863,554 Gross profit $ 14,424 $ 85,451 Income from continuing operations $ 11,100 $ 62,193 Net income $ 11,100 $ 62,193 Patriot Big River Net sales and revenue $ 331,260 $ 1,184,505 Gross profit $ 59,980 $ 241,963 Income from continuing operations $ 52,875 $ 187,388 Net income $ 52,875 $ 187,388

FAIR VALUE (Tables)

FAIR VALUE (Tables)	12 Months Ended
	Jan. 31, 2017
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 at January 31, 2017 on a recurring basis are summarized below (amounts in thousands): Level 1 Level 2 Level 3 Total Fair Value Commodity futures (3) $ — $ 45 $ — $ 45 Forward purchase contracts asset (4) — 163 — 163 Investment in cooperative (1) — — 333 333 Total assets $ — $ 208 $ 333 $ 541 Forward purchase contracts liability (2) $ — $ 136 $ — $ 136 Level 1 Level 2 Level 3 Total Fair Value Investment in cooperative (1) $ — $ — $ 333 $ 333 Forward purchase contracts liability (2) $ — $ 312 $ — $ 312 (1) The investment in cooperative is included in “Other assets” on the accompanying Consolidated Balance Sheets. (2) The forward purchase contract liability is included in “Accrued expenses and other current liabilities” on the accompanying Consolidated Balance Sheets. (3) The commodity futures asset is included in “Prepaid expenses and other” on the accompanying Consolidated Balance Sheets. (4) The forward purchase contract asset is included in “Prepaid expenses and other” on the accompanying Consolidated Balance Sheets.

OTHER ASSETS (Tables)

OTHER ASSETS (Tables)	12 Months Ended
	Jan. 31, 2017
Disclosure Text Block Supplement [Abstract]
Schedule of Other Assets [Table Text Block]	The components of other noncurrent assets at January 31, 2017 and 2016 are as follows (amounts in thousands): January 31, 2017 2016 Real estate taxes refundable $ 5,923 $ 5,091 Deposits 155 664 Other 835 887 Total $ 6,913 $ 6,642

ACCRUED EXPENSES AND OTHER CU31

ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Tables)	12 Months Ended
	Jan. 31, 2017
Disclosure Text Block Supplement [Abstract]
Other Current Liabilities [Table Text Block]	The components of accrued expenses and other current liabilities at January 31, 2017 and 2016 are as follows (amounts in thousands): January 31, 2017 2016 Accrued utility charges $ 2,414 $ 2,094 Accrued payroll and related items 4,279 3,760 Accrued real estate taxes 2,716 2,564 Accrued income taxes 2,120 — Other 1,819 1,005 Total $ 13,348 $ 9,423

NET INCOME PER SHARE FROM CON32

NET INCOME PER SHARE FROM CONTINUING OPERATIONS (Tables)	12 Months Ended
	Jan. 31, 2017
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	The following table reconciles the basic and diluted net income per share amounts from continuing operations computations for each year presented for fiscal years 2015 and 2014 (amounts in thousands, except per-share amounts): 2015 Income Shares Per Share Basic net income per share from continuing operations attributable to REX common shareholders $ 31,436 7,297 $ 4.31 Effect of restricted stock 10 Diluted net income per share from continuing operations attributable to REX common shareholders $ 31,436 7,307 $ 4.30 2014 Income Shares Per Share Basic net income per share from continuing operations attributable to REX common shareholders $ 86,776 8,109 $ 10.70 Effect of stock options 9 Diluted net income per share from continuing operations attributable to REX common shareholders $ 86,776 8,118 $ 10.69

LEASES (Tables)

LEASES (Tables)	12 Months Ended
	Jan. 31, 2017
Leases [Abstract]
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]	At January 31, 2017, the Company has lease agreements, as lessee, for rail cars and a natural gas pipeline. All of the leases are accounted for as operating leases. As of January 31, 2017, future minimum annual rentals on such leases are as follows (amounts in thousands): Years Ended Minimum 2018 $ 7,022 2019 6,108 2020 4,577 2021 2,778 2022 2,547 Thereafter 1,622 $ 24,654

COMMON STOCK (Tables)

COMMON STOCK (Tables)	12 Months Ended
	Jan. 31, 2017
Stockholders' Equity Note [Abstract]
Schedule of Stock by Class [Table Text Block]	Information regarding the Company’s common stock is as follows (amounts in thousands): January 31, 2017 2016 Authorized shares 45,000 45,000 Issued shares 29,853 29,853 Outstanding shares 6,561 6,648

DERIVATIVE FINANCIAL INSTRUME35

DERIVATIVE FINANCIAL INSTRUMENTS (Tables)	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016
Disclosure Text Block Supplement [Abstract]
Schedule of Derivative Assets at Fair Value [Table Text Block]		The following table provides information about the fair values of the Company’s derivative financial instruments and the line items on the Consolidated Balance Sheets in which the fair values are reflected (in thousands): Asset Derivatives Liability Derivatives Fair Value at Fair Value at 2017 2016 2017 2016 Commodity futures (1) $ 45 $ — $ — $ — Forward purchase contracts (2) $ 163 $ — $ 136 $ 312 (1) Commodity futures are included in prepaid expense and other. These contracts are short/sell positions for approximately 0.7 million bushels of corn. (2) Forward purchase contracts assets are included in prepaid expenses and other while forward purchase contracts liabilities are included in accrued expenses and other current liabilities. These contracts are for purchases of approximately 5.3 million bushels of corn at January 31, 2017 and 0.7 million bushels of corn at January 31, 2016.
Derivative Instruments, Gain (Loss) [Table Text Block]	The following table provides information about gains recognized in income on the Company’s derivative financial instruments and the line items on the Consolidated Statements of Operations in which the fair values are reflected for fiscal years 2016, 2015 and 2014 (in thousands): 2016 2015 2014 Cost of sales $ (2,131 ) $ (382 ) $ —

EMPLOYEE BENEFITS (Tables)

EMPLOYEE BENEFITS (Tables)	12 Months Ended
	Jan. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Nonvested Restricted Stock Shares Activity [Table Text Block]	The following table summarizes non-vested restricted stock award activity for the fiscal years 2016 and 2015: 2016 Weighted Weighted Average Grant Average Remaining Non-Vested Date Fair Value Vesting Term Shares (000’s) (in years) Non-Vested at January 31, 2016 3,168 $ 200 2 Granted 21,502 1,269 Forfeited — — Vested 1,320 83 Non-Vested at January 31, 2017 23,350 $ 1,386 2 2015 Weighted Weighted Average Grant Remaining Vesting Non-Vested Date Fair Value Vesting Term Shares (000’s) (in years) Non-Vested at January 31, 2015 — $ — Granted 3,168 200 Forfeited — — Vested — — Non-Vested at January 31, 2016 3,168 $ 200 2
Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price [Table Text Block]	The following summarizes stock option activity for fiscal year 2014: 2014 Weighted Average Shares Exercise (000’s) Price Outstanding—Beginning of year 84 $ 12.37 Exercised (84 ) 12.37 Canceled or expired — — Outstanding—End of year — Exercisable—End of year —

INCOME TAXES (Tables)

INCOME TAXES (Tables)	12 Months Ended
	Jan. 31, 2017
Income Tax Disclosure [Abstract]
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	The provision (benefit) for income taxes for fiscal years 2016, 2015 and 2014 consists of the following (amounts in thousands): 2016 2015 2014 Federal: Current $ 12,197 $ 15,804 $ 23,452 Deferred 3,568 (2,867 ) 20,717 15,765 12,937 44,169 State and Local: Current 2,153 2,651 3,536 Deferred (525 ) (1,480 ) 1,944 1,628 1,171 5,480 Provision for income taxes $ 17,393 $ 14,108 $ 49,649
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	The tax effects of significant temporary differences representing deferred tax assets and liabilities are as follows as of January 31, 2017 and 2016 (amounts in thousands): January 31, 2017 2016 Assets: Accrued liabilities $ 539 $ 915 State net operating loss carryforward 412 1,147 Other items 513 198 Valuation allowance (417 ) (1,151 ) Total 1,047 1,109 Liabilities: Basis in pass through entities, including depreciation (41,080 ) (37,834 ) Other (278 ) (543 ) Total (41,358 ) (38,377 ) Net deferred tax liability $ (40,311 ) $ (37,268 )
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	The effective income tax rate on consolidated pre-tax income or loss differs from the federal income tax statutory rate for fiscal years 2016, 2015 and 2014 as follows: 2016 2015 2014 Federal income tax at statutory rate 35.0 % 35.0 % 35.0 % State and local taxes, net of federal tax benefit 2.3 (1.3 ) 3.6 Net change in valuation allowance — (1.2 ) (0.2 ) Domestic production activities deduction (2.9 ) (1.7 ) (1.1 ) Uncertain tax positions 0.8 1.0 — Noncontrolling interest (4.6 ) (4.4 ) (4.0 ) Other — — (0.8 ) Total 30.6 % 27.4 % 32.5 %
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 (dollars in thousands): Years Ended 2017 2016 Unrecognized tax benefits, beginning of year $ 987 $ 1,658 Changes for tax positions for prior years 1,109 (1,658 ) Changes for tax positions for current year — 987 Unrecognized tax benefits, end of year $ 2,096 $ 987

DISCONTINUED OPERATIONS (Tables

DISCONTINUED OPERATIONS (Tables)	12 Months Ended
	Jan. 31, 2017
Discontinued Operations and Disposal Groups [Abstract]
Disposal Groups, Including Discontinued Operations [Table Text Block]	Below is a table reflecting certain items of the Consolidated Statement of Operations that were reclassified as discontinued operations for fiscal year 2014 (amounts in thousands): 2014 Net sales and revenue $ 47 Cost of sales $ (321 ) Income before income taxes $ 368 Provision for income taxes (134 ) Income from discontinued operations, net of tax $ 234 Gain on disposal before provision for income taxes $ 513 Provision for income taxes (186 ) Gain on disposal of discontinued operations, net of tax $ 327

NET SALES AND REVENUE (Tables)

NET SALES AND REVENUE (Tables)	12 Months Ended
	Jan. 31, 2017
Net Sales And Revenue [Abstract]
Revenue from External Customers by Products and Services [Table Text Block]	The following table summarizes sales for each product and service group for the periods presented (amounts in thousands): Fiscal Year Product or Service Category 2016 2015 2014 Ethanol $ 358,349 $ 333,200 $ 452,831 Dried distillers grains 71,204 81,116 96,328 Non-food grade corn oil 18,518 15,510 16,985 Modified distillers grains 5,326 5,999 4,814 Other 402 663 1,272 Total $ 453,799 $ 436,488 $ 572,230

QUARTERLY UNAUDITED INFORMATI40

QUARTERLY UNAUDITED INFORMATION (Tables)	12 Months Ended
	Jan. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Information [Table Text Block]	The following tables set forth the Company’s net sales and revenue, gross profit, net income and net income per share (basic and diluted) for each quarter during the last two fiscal years. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Quarters Ended (In Thousands, Except Per Share Amounts) April 30, July 31, October 31, January 31, 2016 2016 2016 2017 Net sales and revenue $ 100,222 $ 115,707 $ 116,283 $ 121,587 Gross profit 8,422 17,284 20,162 25,171 Net income 3,466 9,029 11,474 15,549 Net income attributable to REX common shareholders 2,838 8,176 8,938 12,381 Basic net income per share attributable to REX common shareholders $ 0.43 $ 1.24 $ 1.36 $ 1.88 Diluted net income per share attributable to REX common shareholders $ 0.43 $ 1.24 $ 1.36 $ 1.88 Quarters Ended (In Thousands, Except Per Share Amounts) April 30, July 31, October 31, January 31, 2015 2015 2015 2016 Net sales and revenue $ 105,197 $ 113,480 $ 110,584 $ 107,227 Gross profit 9,127 18,276 14,273 9,158 Net income 4,439 18,711 9,433 4,827 Net income attributable to REX common shareholders 3,927 16,367 7,456 3,686 Basic net income per share attributable to REX common shareholders (a) $ 0.50 $ 2.16 $ 1.08 $ 0.54 Diluted net income per share attributable to REX common shareholders (a) $ 0.50 $ 2.16 $ 1.08 $ 0.54 a) The total of the quarterly net income per share amounts do not equal the annual net income per share amounts due to the impact of varying amounts of shares outstanding during the year.

SUMMARY OF SIGNIFICANT ACCOUN41

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)	12 Months Ended
	Jan. 31, 2017USD ($)shares	Jan. 31, 2016USD ($)	Jan. 31, 2015USD ($)
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Number of Ethanol Entities Under Ownership Interest	3
Concentration Risk Number of Customer	5	4	4
Property, Plant and Equipment, Depreciation Methods	Depreciation is computed using the straight-line method.
Impairment of Real Estate		$ 125,000	$ 68,000
Depreciation	$ 19,519,000	18,638,000	16,387,000
Interest Paid			2,136,000
Assets	$ 454,024,000	414,685,000
Derivative Settlement on Interest Rate Swap			$ 1,142,000
Employee Stock Ownership Plan (ESOP), Shares in ESOP (in Shares) | shares	550,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value		4,000,000
Deferred Tax Expense from Stock Options Exercised		$ 800,000
Customer Concentration Risk [Member]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Concentration Risk, Percentage	83.00%	75.00%	74.00%
Accounts Receivable Balance [Member]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Concentration Risk, Percentage	88.00%	47.00%
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	15
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
Not Accounted For Under "Normal Purchases and Normal Sales" Scope [Member]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Assets	$ 200,000
Liabilities	$ 100,000	$ 300,000

SUMMARY OF SIGNIFICANT ACCOUN42

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - Schedule of components of inventory - USD ($) $ in Thousands	Jan. 31, 2017	Jan. 31, 2016
Schedule of components of inventory [Abstract]
Ethanol and other finished goods	$ 5,262	$ 3,105
Work in process	2,359	2,652
Grain and other raw materials	9,436	11,421
Total	$ 17,057	$ 17,178

SUMMARY OF SIGNIFICANT ACCOUN43

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - Schedule of Property Plant and Equipment - USD ($) $ in Thousands	Jan. 31, 2017	Jan. 31, 2016
Schedule of Property Plant and Equipment [Abstract]
Land and improvements	$ 20,951	$ 21,598
Buildings and improvements	23,203	24,543
Machinery, equipment and fixtures	255,348	237,735
Construction in progress	1,046	6,094
	300,548	289,970
Less: accumulated depreciation	(117,787)	(99,994)
Total	$ 182,761	$ 189,976

INVESTMENTS (Details)

INVESTMENTS (Details) $ in Thousands, gal in Millions	3 Months Ended	12 Months Ended
	Apr. 30, 2016USD ($)	Jan. 31, 2017USD ($)gal	Jan. 31, 2016USD ($)	Jan. 31, 2015USD ($)	Jan. 31, 2009
INVESTMENTS (Details) [Line Items]
Income (Loss) from Equity Method Investments		$ 6,144	$ 8,984	$ 32,229
Equity Method Investments		37,833	38,707
Gain (Loss) on Sale of Investments	$ 200	192	10,385
Accounts Receivable, Net, Current		11,901	13,666
Retained Earnings, Undistributed Earnings from Equity Method Investees		17,800	18,700
Big River [Member]
INVESTMENTS (Details) [Line Items]
Agreement to Invest During Year		$ 20,000
Equity Method Investment, Ownership Percentage		9.70%
Income (Loss) from Equity Method Investments		$ 6,100	6,000	18,200
Proceeds from Equity Method Investment, Distribution		7,000	7,500	18,000
Equity Method Investments		37,833	$ 38,707
Equity Method Investment, Underlying Equity in Net Assets		37,200
Other Restricted Assets		278,700
Proportionate Share of Restricted Net Assets		$ 27,000
Big River [Member] | Burlington [Member]
INVESTMENTS (Details) [Line Items]
Quantity of ethanol shipped (in US Gallons) | gal		107
Big River [Member] | Illinois [Member]
INVESTMENTS (Details) [Line Items]
Quantity of ethanol shipped (in US Gallons) | gal		125
Big River [Member] | Dyersville [Member]
INVESTMENTS (Details) [Line Items]
Equity Method Investment, Ownership Percentage			55.30%		50.50%
Quantity of ethanol shipped (in US Gallons) | gal		128
Big River [Member] | Boyceville [Member]
INVESTMENTS (Details) [Line Items]
Quantity of ethanol shipped (in US Gallons) | gal		57
Big River [Member] | Big River Resources United Energy LLC [Member]
INVESTMENTS (Details) [Line Items]
Equity Method Investment, Ownership Percentage		55.30%
Patriot [Member]
INVESTMENTS (Details) [Line Items]
Equity Method Investment, Ownership Percentage		27.00%
Income (Loss) from Equity Method Investments			$ 2,900	14,000
Proceeds from Equity Method Investment, Distribution			$ 3,600	$ 4,900
Equity Method Initial Investments		$ 17,900
Business Acquisition, Percentage of Voting Interests Acquired		100.00%
Gain (Loss) on Disposition of Business		$ 45,500
Business Combination, Consideration Transferred		196,000
Gain (Loss) on Sale of Investments		10,400
Proceeds From Payment For Escrow Holdbacks And Adjustments		4,500
Accounts Receivable, Net, Current		$ 100

INVESTMENTS (Details) - Schedul

INVESTMENTS (Details) - Schedule of Equity Method Investments - USD ($) $ in Thousands	Jan. 31, 2017	Jan. 31, 2016
Schedule of Equity Method Investments [Line Items]
Big River Resources, LLC	$ 37,833	$ 38,707
Big River [Member]
Schedule of Equity Method Investments [Line Items]
Big River Resources, LLC	9.70%
Big River Resources, LLC	$ 37,833	$ 38,707

INVESTMENTS (Details) - Sched46

INVESTMENTS (Details) - Schedule of Condensed Balance Sheet - USD ($) $ in Thousands	Jan. 31, 2017	Dec. 31, 2016	Jan. 31, 2016	Dec. 31, 2015
Condensed Balance Sheet Statements, Captions [Line Items]
Current assets	$ 226,517		$ 179,360
Total assets	454,024		414,685
Current liabilities	$ 22,519		$ 19,635
Big River [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Current assets		$ 175,299
Non current assets		311,450
Total assets		486,749
Current liabilities		50,798
Total liabilities		50,798
Noncontrolling interests		$ 52,336
Patriot [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Current assets				$ 137,758
Non current assets				341,907
Total assets				479,665
Current liabilities				49,224
Total liabilities				49,224
Noncontrolling interests				$ 48,156

INVESTMENTS (Details) - Sched47

INVESTMENTS (Details) - Schedule of Financial information For Equity Method Investment - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	[1]	Dec. 31, 2015		Dec. 31, 2014
Patriot [Member]
INVESTMENTS (Details) - Schedule of Financial information For Equity Method Investment [Line Items]
Net sales and revenue	$ 851,434		$ 863,554		$ 1,184,505
Gross profit	88,841		85,451		241,963
Income from continuing operations	63,292		62,193		187,388
Net income	$ 63,292		62,193		187,388
Big River [Member]
INVESTMENTS (Details) - Schedule of Financial information For Equity Method Investment [Line Items]
Net sales and revenue			115,614	[1]	331,260
Gross profit			14,424	[1]	59,980
Income from continuing operations			11,100	[1]	52,875
Net income			$ 11,100	[1]	$ 52,875
[1]	For Patriot, results are for the five month period ended May 31, 2015 as the Company's equity interest in Patriot was sold June 1, 2015.

FAIR VALUE (Details)

FAIR VALUE (Details)	12 Months Ended
	Jan. 31, 2015USD ($)
Fair Value Disclosures [Abstract]
Impairment of Long-Lived Assets to be Disposed of	$ 68,000

FAIR VALUE (Details) - Schedule

FAIR VALUE (Details) - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis - USD ($) $ in Thousands		Jan. 31, 2017	Jan. 31, 2016
FAIR VALUE (Details) - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Commodity futures	[1]	$ 45
Forward purchase contracts asset	[2]	163
Investment in cooperative (1)	[3]	333	$ 333
Total assets		541
Forward purchase contracts liability (2)	[4]	136	312
Fair Value, Inputs, Level 1 [Member]
FAIR VALUE (Details) - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Commodity futures	[1]
Forward purchase contracts asset	[2]
Investment in cooperative (1)	[3]
Forward purchase contracts liability (2)	[4]
Fair Value, Inputs, Level 2 [Member]
FAIR VALUE (Details) - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Commodity futures	[1]	45
Forward purchase contracts asset	[2]	163
Investment in cooperative (1)	[3]
Total assets		208
Forward purchase contracts liability (2)	[4]	136	312
Fair Value, Inputs, Level 3 [Member]
FAIR VALUE (Details) - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Commodity futures	[1]
Forward purchase contracts asset	[2]
Investment in cooperative (1)	[3]	333	333
Total assets		333
Forward purchase contracts liability (2)	[4]
[1]	The commodity futures asset is included in "Prepaid expenses and other" on the accompanying Consolidated Balance Sheets.
[2]	The forward purchase contract asset is included in "Prepaid expenses and other" on the accompanying Consolidated Balance Sheets.
[3]	The investment in cooperative is included in "Other assets" on the accompanying Consolidated Balance Sheets.
[4]	The forward purchase contract liability is included in "Accrued expenses and other current liabilities" on the accompanying Consolidated Balance Sheets.

OTHER ASSETS (Details) - Schedu

OTHER ASSETS (Details) - Schedule of Other Assets - USD ($) $ in Thousands	Jan. 31, 2017	Jan. 31, 2016
Schedule of Other Assets [Abstract]
Real estate taxes refundable	$ 5,923	$ 5,091
Deposits	155	664
Other	835	887
Total	$ 6,913	$ 6,642

ACCRUED EXPENSES AND OTHER CU51

ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Details) - Schedule of accrued expenses and other current liabilities - USD ($) $ in Thousands	Jan. 31, 2017	Jan. 31, 2016
Schedule of accrued expenses and other current liabilities [Abstract]
Accrued utility charges	$ 2,414	$ 2,094
Accrued payroll and related items	4,279	3,760
Accrued real estate taxes	2,716	2,564
Accrued income taxes	2,120
Other	1,819	1,005
Total	$ 13,348	$ 9,423

NET INCOME PER SHARE FROM CON52

NET INCOME PER SHARE FROM CONTINUING OPERATIONS (Details) - Schedule of Earnings Per Share, Basic and Diluted - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Schedule of Earnings Per Share, Basic and Diluted [Abstract]
Basic net income per share from continuing operations attributable to REX common shareholders (in Dollars)		$ 31,436	$ 86,776
Basic net income per share from continuing operations attributable to REX common shareholders	6,587	7,297	8,109
Basic net income per share from continuing operations attributable to REX common shareholders (in Dollars per share)	$ 4.91	$ 4.31	$ 10.70
Effect of restricted stock		10	9
Diluted net income per share from continuing operations attributable to REX common shareholders (in Dollars)		$ 31,436	$ 86,776
Diluted net income per share from continuing operations attributable to REX common shareholders	6,587	7,307	8,118
Diluted net income per share from continuing operations attributable to REX common shareholders (in Dollars per share)	$ 4.91	$ 4.30	$ 10.69

LEASES (Details) - Schedule of

LEASES (Details) - Schedule of Future Minimum Rental Payments for Operating Leases $ in Thousands	Jan. 31, 2017USD ($)
Schedule of Future Minimum Rental Payments for Operating Leases [Abstract]
2,018	$ 7,022
2,019	6,108
2,020	4,577
2,021	2,778
2,022	2,547
Thereafter	1,622
	$ 24,654

COMMON STOCK (Details)

COMMON STOCK (Details) - USD ($)	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
COMMON STOCK (Details) [Line Items]
Treasury Stock, Shares, Acquired	87,904	1,254,344	283,979
Treasury Stock, Value, Acquired, Cost Method (in Dollars)	$ 4,353,000	$ 70,208,000	$ 18,238,000
Stock Repurchase Program Number of Additional Shares Authorized to be Repurchased	155,334
Employee Stock Option [Member]
COMMON STOCK (Details) [Line Items]
Treasury Stock, Shares, Acquired		1,555
Treasury Stock, Value, Acquired, Cost Method (in Dollars)		$ 100,000

COMMON STOCK (Details) - Schedu

COMMON STOCK (Details) - Schedule of Stock by Class - shares shares in Thousands	Jan. 31, 2017	Jan. 31, 2016
Schedule of Stock by Class [Abstract]
Authorized shares	45,000	45,000
Issued shares	29,853	29,853
Outstanding shares	6,561	6,648

REVOLVING LINES OF CREDIT (Deta

REVOLVING LINES OF CREDIT (Details) - One Earth Energy And Nu Gen Energy [Member] - Revolving Credit Facility [Member] $ in Millions	12 Months Ended
	Jan. 31, 2017USD ($)
REVOLVING LINES OF CREDIT (Details) [Line Items]
Line of Credit, Current	$ 10
Debt Instrument, Maturity Date	Apr. 1, 2017
Line of Credit Facility, Interest Rate Description	LIBOR rate plus 250 basis points

DERIVATIVE FINANCIAL INSTRUME57

DERIVATIVE FINANCIAL INSTRUMENTS (Details) bu in Millions	Jan. 31, 2017USD ($)bu	Jan. 31, 2016bu
Disclosure Text Block Supplement [Abstract]
Quantity Of Bushels Under Commodity Futures	0.7
Quantity of Bushels under Forward Purchase Contract	5.3	0.7
Debt Instrument, Collateral Amount (in Dollars) | $	$ 131,000

DERIVATIVE FINANCIAL INSTRUME58

DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Fair Values for Derivative Financial Instruments - USD ($) $ in Thousands		Jan. 31, 2017	Jan. 31, 2016
Commodity Contract [Member]
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Fair Values for Derivative Financial Instruments [Line Items]
Asset Derivatives, Fair Value	[1]	$ 45
Liability Derivatives, Fair Value	[1]
Forward Contracts [Member]
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Fair Values for Derivative Financial Instruments [Line Items]
Asset Derivatives, Fair Value	[2]	163
Liability Derivatives, Fair Value	[2]	$ 136	$ 312
[1]	Commodity futures are included in prepaid expense and other. These contracts are short/sell positions for approximately 0.7 million bushels of corn.
[2]	Forward purchase contracts assets are included in prepaid expenses and other while forward purchase contracts liabilities are included in accrued expenses and other current liabilities. These contracts are for purchases of approximately 5.3 million bushels of corn at January 31, 2017 and 0.7 million bushels of corn at January 31, 2016.

DERIVATIVE FINANCIAL INSTRUME59

DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Schedule of Gains or Losses of Derivative Financial Instruments - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016
Schedule of Gains or Losses of Derivative Financial Instruments [Abstract]
Cost of sales	$ (2,131)	$ (382)

EMPLOYEE BENEFITS (Details)

EMPLOYEE BENEFITS (Details) - USD ($)	Jan. 31, 2017	Jan. 31, 2016
EMPLOYEE BENEFITS (Details) [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	$ 214,000	$ 136,000
Stock Option Plans 2015 [Member] | Employee Stock 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	525,330

EMPLOYEE BENEFITS (Details) - S

EMPLOYEE BENEFITS (Details) - Schedule of Non-Vested Restricted Stock Award Activity - $ / shares $ / shares in Thousands	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016
Schedule of Non-Vested Restricted Stock Award Activity [Abstract]
Non-Vested Shares, Outstanding	3,168
Weighted Average Grant Date Fair Value, Outstanding	$ 200
Weighted Average Vesting Term, Outstanding	2 years	2 years
Non-Vested Shares, Granted	21,502	3,168
Weighted Average Grant Date Fair Value, Granted	$ 1,269	$ 200
Non-Vested Shares, Forfeited
Weighted Average Grant Date Fair Value, Forfeited
Non-Vested Shares, Vested	1,320
Weighted Average Grant Date Fair Value, Vested	$ 83
Non-Vested Shares Outstanding	23,350	3,168
Weighted Average Grant Date Fair Value, Outstanding	$ 1,386	$ 200

EMPLOYEE BENEFITS (Details) -62

EMPLOYEE BENEFITS (Details) - Schedule of Share-based Compensation, Stock Options, Activity shares in Thousands	12 Months Ended
	Jan. 31, 2015$ / sharesshares
Schedule of Share-based Compensation, Stock Options, Activity [Abstract]
Outstanding Shares	84
Outstanding Weighted Average Exercise Price (in Dollars per share) | $ / shares	$ 12.37
Exercisable Shares
Exercised Shares	(84)
Exercised Weighted Average Exercise Price (in Dollars per share) | $ / shares	$ 12.37
Canceled or expired shares
Outstanding Shares

COMMITMENTS (Details)

COMMITMENTS (Details) lb in Millions, gal in Millions, bu in Millions	12 Months Ended
	Jan. 31, 2017USD ($)Tlbgalbu	Jan. 31, 2016USD ($)bu	Jan. 31, 2015USD ($)
COMMITMENTS (Details) [Line Items]
Quantity of Bushels under Forward Purchase Contract (in US Bushels) | bu	5.3	0.7
Operating Leases, Future Minimum Payments Due	$ 24,654,000
One Earth Energy And Nu Gen Energy [Member]
COMMITMENTS (Details) [Line Items]
Quantity of Bushels under Forward Purchase Contract (in US Bushels) | bu	7.7
Quantity of Ethanol under Sales Commitment (in US Gallons) | gal	59.7
Quantity of Distillers Grains Under Sales Commitment (in US Tons) | T	67,000
Quantity of Non-food Grade Corn Oil Under Sales Commitments (in Pounds) | lb	14.4
Supply Commitment Expected Period Of Delivery	They expect to deliver the ethanol, distillers grains and corn oil through June 2017.
One Earth Energy And Nu Gen Energy [Member] | Railcars One [Member]
COMMITMENTS (Details) [Line Items]
Operating Leases, Rent Expense, Net	$ 8,515,000	$ 7,221,000	$ 7,024,000
Lease Expiration Date	Feb. 1, 2024
One Earth Energy And Nu Gen Energy [Member] | Distillers Grains Marketing Services [Member]
COMMITMENTS (Details) [Line Items]
Marketing Expense	$ 1,194,000	$ 1,169,000	$ 1,190,000
One Earth Energy [Member]
COMMITMENTS (Details) [Line Items]
Expiration Date of Grain Agreement	Oct. 31, 2016
Maximum Period to Notify Other Party for Grain Agreement Period Extension	180 months
One Earth Energy [Member] | Natural Gas Pipeline [Member]
COMMITMENTS (Details) [Line Items]
Lease Expiration Period	10 years
Operating Leases, Future Minimum Payments Due	$ 4,380,000
Number of installments payable	120
Installment amount	$ 36,500
Operating Leases, Rent Expense, Net	$ 438,000
Alliance Grain [Member]
COMMITMENTS (Details) [Line Items]
Percentage of Grain Purchase Under Agreement	100.00%

INCOME TAXES (Details)

INCOME TAXES (Details) - USD ($)	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015	Jan. 31, 2014
Income Tax Disclosure [Abstract]
Deferred Tax Assets, Valuation Allowance	$ 417,000	$ 1,151,000	$ 1,752,000	$ 2,017,000
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	(734,000)	(601,000)	(265,000)
Income Taxes Paid	7,090,000	20,253,000	30,142,000
Proceeds from Income Tax Refunds	150,000	132,000	53,000
Unrecognized Tax Benefits	1,875,000	$ 987,000	$ 1,658,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	221,000
Increase in Unrecognized Tax Benefits is Reasonably Possible	$ 1,297,000

INCOME TAXES (Details) - Sched

INCOME TAXES (Details) - Schedule of Components of Income Tax Expense - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Federal:
Current	$ 12,197	$ 15,804	$ 23,452
Deferred	3,568	(2,867)	20,717
	15,765	12,937	44,169
State and Local:
Current	2,153	2,651	3,536
Deferred	(525)	(1,480)	1,944
	1,628	1,171	5,480
Provision for income taxes	$ 17,393	$ 14,108	$ 49,649

INCOME TAXES (Details) - Sch66

INCOME TAXES (Details) - Schedule of Deferred Tax Assets and Liabilities - USD ($)	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015	Jan. 31, 2014
Assets:
Accrued liabilities	$ 539,000	$ 915,000
State net operating loss carryforward	412,000	1,147,000
Other items	513,000	198,000
Valuation allowance	(417,000)	(1,151,000)	$ (1,752,000)	$ (2,017,000)
Total	1,047,000	1,109,000
Liabilities:
Basis in pass through entities, including depreciation	(41,080,000)	(37,834,000)
Other	(278,000)	(543,000)
Total	(41,358,000)	(38,377,000)
Net deferred tax liability	$ (40,311,000)	$ (37,268,000)

INCOME TAXES (Details) - Sch67

INCOME TAXES (Details) - Schedule of Effective Income Tax Reconciliation	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Schedule of Effective Income Tax Reconciliation [Abstract]
Federal income tax at statutory rate	35.00%	35.00%	35.00%
State and local taxes, net of federal tax benefit	2.30%	(1.30%)	3.60%
Net change in valuation allowance		(1.20%)	(0.20%)
Domestic production activities deduction	(2.90%)	(1.70%)	(1.10%)
Uncertain tax positions	0.80%	1.00%
Noncontrolling interest	(4.60%)	(4.40%)	(4.00%)
Other			(0.80%)
Total	30.60%	27.40%	32.50%

INCOME TAXES (Details) - Sch68

INCOME TAXES (Details) - Schedule of Unrecognized Tax Benefits Roll Forward - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016
Schedule of Unrecognized Tax Benefits Roll Forward [Abstract]
Unrecognized tax benefits, beginning of year	$ 987	$ 1,658
Changes for tax positions for prior years	1,109
Changes for tax positions for prior years		(1,658)
Changes for tax positions for current year		987
Unrecognized tax benefits, end of year	$ 2,096	$ 987

DISCONTINUED OPERATIONS (Detail

DISCONTINUED OPERATIONS (Details) - Schedule of Disposal Groups Including Discontinued Operations $ in Thousands	12 Months Ended
	Jan. 31, 2015USD ($)
Schedule of Disposal Groups Including Discontinued Operations [Abstract]
Net sales and revenue	$ 47
Cost of sales	(321)
Income before income taxes	368
Provision for income taxes	(134)
Income from discontinued operations, net of tax	234
Gain on disposal before provision for income taxes	513
Provision for income taxes	(186)
Gain on disposal of discontinued operations, net of tax	$ 327

CONTINGENCIES (Details)

CONTINGENCIES (Details) - USD ($)	Jan. 31, 2017	Jan. 31, 2016
Loss Contingency [Abstract]
Loss Contingency Accrual	$ 0	$ 0

NET SALES AND REVENUE (Details)

NET SALES AND REVENUE (Details) - Schedule of Sales of Consolidated Ethanol Plants - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Revenue from External Customer [Line Items]
Product or Service	$ 453,799	$ 436,488	$ 572,230
Ethanol [Member]
Revenue from External Customer [Line Items]
Product or Service	358,349	333,200	452,831
Dried Distillers Grains [Member]
Revenue from External Customer [Line Items]
Product or Service	71,204	81,116	96,328
Non-Food Grade Corn Oil [Member]
Revenue from External Customer [Line Items]
Product or Service	18,518	15,510	16,985
Modified Distillers Grains [Member]
Revenue from External Customer [Line Items]
Product or Service	5,326	5,999	4,814
Other Product [Member]
Revenue from External Customer [Line Items]
Product or Service	$ 402	$ 663	$ 1,272

QUARTERLY UNAUDITED INFORMATI72

QUARTERLY UNAUDITED INFORMATION (Details) - Schedule of Quarterly Financial Information - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended												12 Months Ended
	Jan. 31, 2017	Oct. 31, 2016	Jul. 31, 2016	Apr. 30, 2016	Jan. 31, 2016		Oct. 31, 2015		Jul. 31, 2015		Apr. 30, 2015		Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Schedule of Quarterly Financial Information [Abstract]
Net sales and revenue	$ 121,587	$ 116,283	$ 115,707	$ 100,222	$ 107,227		$ 110,584		$ 113,480		$ 105,197		$ 453,799	$ 436,488	$ 572,230
Gross profit	25,171	20,162	17,284	8,422	9,158		14,273		18,276		9,127		71,039	50,834	141,939
Net income	15,549	11,474	9,029	3,466	4,827		9,433		18,711		4,439		39,518	37,410	103,714
Net income attributable to REX common shareholders	$ 12,381	$ 8,938	$ 8,176	$ 2,838	$ 3,686		$ 7,456		$ 16,367		$ 3,927		$ 32,333	$ 31,436	$ 87,337
Basic net income per share attributable to REX common shareholders (in Dollars per share)	$ 1.88	$ 1.36	$ 1.24	$ 0.43	$ 0.54	[1]	$ 1.08	[1]	$ 2.16	[1]	$ 0.50	[1]	$ 4.91	$ 4.31	$ 10.77
Diluted net income per share attributable to REX common shareholders (in Dollars per share)	$ 1.88	$ 1.36	$ 1.24	$ 0.43	$ 0.54	[1]	$ 1.08	[1]	$ 2.16	[1]	$ 0.50	[1]	$ 4.91	$ 4.30	$ 10.76
[1]	The total of the quarterly net income per share amounts do not equal the annual net income per share amounts due to the impact of varying amounts of shares outstanding during the year.

RELATED PARTIES (Details)

RELATED PARTIES (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
RELATED PARTIES (Details) [Line Items]
Accounts Payable, Related Parties, Current	$ 1.7	$ 1.2
One Earth Energy And Nu Gen Energy [Member]
RELATED PARTIES (Details) [Line Items]
Costs and Expenses, Related Party	$ 148.5	$ 148.2	$ 164.7

Schedule II - VALUATION AND Q74

Schedule II - VALUATION AND QUALIFYING ACCOUNTS (Details) - VALUATION AND QUALIFYING ACCOUNTS - USD ($)	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
2017:
Balance	$ 1,151,000	$ 1,752,000	$ 2,017,000
Deductions Charges for Which Reserves Were Created	734,000	601,000	265,000
Balance	$ 417,000	$ 1,151,000	$ 1,752,000