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CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) Share data in Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
--- | ---
Jan. 31, 2015 | Jan. 31, 2014 | Jan. 31, 2013
Net sales and revenue | $ 572,230,000 us-gaap_SalesRevenueNet | $ 666,045,000 us-gaap_SalesRevenueNet | $ 656,589,000 us-gaap_SalesRevenueNet
Cost of sales | 430,291,000 us-gaap_CostOfGoodsAndServicesSold | 601,757,000 us-gaap_CostOfGoodsAndServicesSold | 642,787,000 us-gaap_CostOfGoodsAndServicesSold
Gross profit | 141,939,000 us-gaap_GrossProfit | 64,288,000 us-gaap_GrossProfit | 13,802,000 us-gaap_GrossProfit
Selling, general and administrative expenses | (19,422,000)us-gaap_SellingGeneralAndAdministrativeExpense | (17,846,000)us-gaap_SellingGeneralAndAdministrativeExpense | (12,546,000)us-gaap_SellingGeneralAndAdministrativeExpense
Equity in income of unconsolidated ethanol affiliates | 32,229,000 us-gaap_IncomeLossFromEquityMethodInvestments | 17,175,000 us-gaap_IncomeLossFromEquityMethodInvestments | 627,000 us-gaap_IncomeLossFromEquityMethodInvestments
Interest and other income | 369,000 us-gaap_InterestAndOtherIncome | 234,000 us-gaap_InterestAndOtherIncome | 204,000 us-gaap_InterestAndOtherIncome
Interest expense | (2,074,000)us-gaap_InterestExpense | (3,898,000)us-gaap_InterestExpense | (4,828,000)us-gaap_InterestExpense
Loss on disposal of real estate and property and equipment, net | (238,000)us-gaap_SalesOfRealEstate |  | (490,000)us-gaap_SalesOfRealEstate
Loss on derivative financial instruments | (1,000)us-gaap_GainLossOnDerivativeInstrumentsNetPretax | (39,000)us-gaap_GainLossOnDerivativeInstrumentsNetPretax | (370,000)us-gaap_GainLossOnDerivativeInstrumentsNetPretax
Income (loss) from continuing operations before income taxes | 152,802,000 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | 59,914,000 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | (3,601,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
(Provision) benefit for income taxes | (49,649,000)us-gaap_IncomeTaxExpenseBenefit | (20,751,000)us-gaap_IncomeTaxExpenseBenefit | 1,548,000 us-gaap_IncomeTaxExpenseBenefit
Income (loss) from continuing operations | 103,153,000 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | 39,163,000 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | (2,053,000)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
Income from discontinued operations, net of tax | 234,000 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 325,000 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 329,000 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
Gain on disposal of discontinued operations, net of tax | 327,000 us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax | 741,000 us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax | 136,000 us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax
Net income (loss) | 103,714,000 us-gaap_ProfitLoss | 40,229,000 us-gaap_ProfitLoss | (1,588,000)us-gaap_ProfitLoss
Net income attributable to noncontrolling interests | (16,377,000)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest | (5,156,000)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest | (707,000)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
Net income (loss) attributable to REX common shareholders | 87,337,000 us-gaap_NetIncomeLoss | 35,073,000 us-gaap_NetIncomeLoss | (2,295,000)us-gaap_NetIncomeLoss
Weighted average shares outstanding – basic (in Shares) | 8,109 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 8,137 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 8,272 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Basic income (loss) per share from continuing operations attributable to REX common shareholders (in Dollars per share) | $ 10.70 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare | $ 4.18 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare | $ (0.33)us-gaap_IncomeLossFromContinuingOperationsPerBasicShare
Basic income per share from discontinued operations attributable to REX common shareholders (in Dollars per share) | $ 0.03 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare | $ 0.04 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare | $ 0.04 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare
Basic income per share on disposal of discontinued operations attributable to REX common shareholders (in Dollars per share) | $ 0.04 rex_IncomeLossFromDisposalOfDiscontinuedOperationsNetOfTaxPerBasicPerShare | $ 0.09 rex_IncomeLossFromDisposalOfDiscontinuedOperationsNetOfTaxPerBasicPerShare | $ 0.01 rex_IncomeLossFromDisposalOfDiscontinuedOperationsNetOfTaxPerBasicPerShare
Basic net income (loss) per share attributable to REX common shareholders (in Dollars per share) | $ 10.77 us-gaap_EarningsPerShareBasic | $ 4.31 us-gaap_EarningsPerShareBasic | $ (0.28)us-gaap_EarningsPerShareBasic
Weighted average shares outstanding – diluted (in Shares) | 8,118 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 8,180 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 8,272 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Diluted income (loss) per share from continuing operations attributable to REX common shareholders (in Dollars per share) | $ 10.69 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare | $ 4.16 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare | $ (0.33)us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare
Diluted income per share from discontinued operations attributable to REX common shareholders (in Dollars per share) | $ 0.03 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare | $ 0.04 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare | $ 0.04 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare
Diluted income per share on disposal of discontinued operations attributable to REX common shareholders (in Dollars per share) | $ 0.04 rex_IncomeLossFromDisposalOfDiscontinuedOperationsNetOfTaxPerDilutedPerShare | $ 0.09 rex_IncomeLossFromDisposalOfDiscontinuedOperationsNetOfTaxPerDilutedPerShare | $ 0.01 rex_IncomeLossFromDisposalOfDiscontinuedOperationsNetOfTaxPerDilutedPerShare
Diluted net income (loss) per share attributable to REX common shareholders (in Dollars per share) | $ 10.76 us-gaap_EarningsPerShareDiluted | $ 4.29 us-gaap_EarningsPerShareDiluted | $ (0.28)us-gaap_EarningsPerShareDiluted
Amounts attributable to REX common shareholders: |  |  |
Income (loss) from continuing operations, net of tax | 86,776,000 us-gaap_IncomeLossFromContinuingOperations | 34,007,000 us-gaap_IncomeLossFromContinuingOperations | (2,760,000)us-gaap_IncomeLossFromContinuingOperations
Income from discontinued operations, net of tax | 561,000 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity | 1,066,000 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity | 465,000 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity
Net income (loss) | $ 87,337,000 us-gaap_NetIncomeLoss | $ 35,073,000 us-gaap_NetIncomeLoss | $ (2,295,000)us-gaap_NetIncomeLoss

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