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FAIR VALUE (Details) - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (USD $) In Thousands, unless otherwise specified	Jan. 31, 2015		Jan. 31, 2014
FAIR VALUE (Details) - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Investment in Cooperative	$ 333rex_InvestmentInCooperativeFairValueDisclosure	[1]	$ 289rex_InvestmentInCooperativeFairValueDisclosure	[1]
Total Assets			411us-gaap_AssetsFairValueDisclosure
Interest Rate Swap Derivative Liabilities			1,141us-gaap_DerivativeLiabilities
Cash Equivalents			2us-gaap_CashAndCashEquivalentsFairValueDisclosure
Money Market Mutual Fund (1)			120rex_MoneyMarketMutualFundFairValueDisclosureIncludingRestrictedInvestmentsAndDeposits	[1]
Fair Value, Inputs, Level 1 [Member]
FAIR VALUE (Details) - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total Assets			122us-gaap_AssetsFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member
Cash Equivalents			2us-gaap_CashAndCashEquivalentsFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member
Money Market Mutual Fund (1)			120rex_MoneyMarketMutualFundFairValueDisclosureIncludingRestrictedInvestmentsAndDeposits / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member	[1]
Fair Value, Inputs, Level 2 [Member]
FAIR VALUE (Details) - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Interest Rate Swap Derivative Liabilities			1,141us-gaap_DerivativeLiabilities / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member
Fair Value, Inputs, Level 3 [Member]
FAIR VALUE (Details) - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Investment in Cooperative	333rex_InvestmentInCooperativeFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member	[1]	289rex_InvestmentInCooperativeFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member	[1]
Total Assets			$ 289us-gaap_AssetsFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
[1] The money market mutual fund is included in "Restricted investments and deposits" and the investment in cooperative is included in "Other assets" on the accompanying Consolidated Balance Sheets.

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Fair value of investment in cooperative as of the reporting date.

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Fair value disclosure for money market mutual fund including restricted investments and deposits.

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Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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