XML 20 R46.htm IDEA: XBRL DOCUMENT
v2.4.1.9

INVESTMENTS AND DEPOSITS (Details) (USD $) | 12 Months Ended
--- | ---
Jan. 31, 2015 | Jan. 31, 2014 | Jan. 31, 2013
INVESTMENTS AND DEPOSITS (Details) [Line Items] |  |  |
Income (Loss) from Equity Method Investments | $ 32,229,000 us-gaap_IncomeLossFromEquityMethodInvestments | $ 17,175,000 us-gaap_IncomeLossFromEquityMethodInvestments | $ 627,000 us-gaap_IncomeLossFromEquityMethodInvestments
Equity Method Investments | 80,389,000 us-gaap_EquityMethodInvestments | 71,189,000 us-gaap_EquityMethodInvestments |
Retained Earnings, Undistributed Earnings from Equity Method Investees | 41,900,000 us-gaap_RetainedEarningsUndistributedEarningsFromEquityMethodInvestees | 32,600,000 us-gaap_RetainedEarningsUndistributedEarningsFromEquityMethodInvestees |
Big River [Member] | Big River Resources United Energy LLC [Member] |  |  |
INVESTMENTS AND DEPOSITS (Details) [Line Items] |  |  |
Equity Method Investment, Ownership Percentage | 50.50%us-gaap_EquityMethodInvestmentOwnershipPercentage / dei_LegalEntityAxis = rex_BigRiverResourcesUnitedEnergyLLCMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = rex_BigRiverMember |  |
Big River [Member] | Burlington [Member] |  |  |
INVESTMENTS AND DEPOSITS (Details) [Line Items] |  |  |
Quantity of ethanol shipped (in US Gallons) | 108,000,000 rex_QuantityOfEthanolShipped / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = rex_BigRiverMember / us-gaap_StatementGeographicalAxis = rex_BurlingtonMember |  |
Big River [Member] | Illinois [Member] |  |  |
INVESTMENTS AND DEPOSITS (Details) [Line Items] |  |  |
Quantity of ethanol shipped (in US Gallons) | 119,000,000 rex_QuantityOfEthanolShipped / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = rex_BigRiverMember / us-gaap_StatementGeographicalAxis = rex_IllinoisMember |  |
Big River [Member] | Dyersville [Member] |  |  |
INVESTMENTS AND DEPOSITS (Details) [Line Items] |  |  |
Quantity of ethanol shipped (in US Gallons) | 125,000,000 rex_QuantityOfEthanolShipped / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = rex_BigRiverMember / us-gaap_StatementGeographicalAxis = rex_DyersvilleMember |  |
Big River [Member] | Boyceville [Member] |  |  |
INVESTMENTS AND DEPOSITS (Details) [Line Items] |  |  |
Quantity of ethanol shipped (in US Gallons) | 58,000,000 rex_QuantityOfEthanolShipped / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = rex_BigRiverMember / us-gaap_StatementGeographicalAxis = rex_BoycevilleMember |  |
Big River [Member] |  |  |
INVESTMENTS AND DEPOSITS (Details) [Line Items] |  |  |
Agreement to Invest During Year | 20,000,000 rex_AgreementToInvestDuringYear / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = rex_BigRiverMember |  |
Equity Method Investment, Ownership Percentage | 10.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = rex_BigRiverMember |  |
Income (Loss) from Equity Method Investments | 18,200,000 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = rex_BigRiverMember | 8,800,000 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = rex_BigRiverMember | 300,000 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = rex_BigRiverMember
Proceeds from Equity Method Investment, Dividends or Distributions | 18,000,000 us-gaap_EquityMethodInvestmentDividendsOrDistributions / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = rex_BigRiverMember | 1,200,000 us-gaap_EquityMethodInvestmentDividendsOrDistributions / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = rex_BigRiverMember | 2,200,000 us-gaap_EquityMethodInvestmentDividendsOrDistributions / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = rex_BigRiverMember
Equity Method Investments | 40,188,000 us-gaap_EquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = rex_BigRiverMember | 40,042,000 us-gaap_EquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = rex_BigRiverMember |
Equity Method Investment, Underlying Equity in Net Assets | 40,700,000 us-gaap_EquityMethodInvestmentUnderlyingEquityInNetAssets / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = rex_BigRiverMember |  |
Patriot [Member] | Illinois [Member] |  |  |
INVESTMENTS AND DEPOSITS (Details) [Line Items] |  |  |
Quantity of ethanol shipped (in US Gallons) | 126,000,000 rex_QuantityOfEthanolShipped / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = rex_PatriotMember / us-gaap_StatementGeographicalAxis = rex_IllinoisMember |  |
Patriot [Member] |  |  |
INVESTMENTS AND DEPOSITS (Details) [Line Items] |  |  |
Equity Method Investment, Ownership Percentage | 27.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = rex_PatriotMember |  |
Income (Loss) from Equity Method Investments | 14,000,000 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = rex_PatriotMember | 8,400,000 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = rex_PatriotMember | 400,000 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = rex_PatriotMember
Proceeds from Equity Method Investment, Dividends or Distributions | 4,900,000 us-gaap_EquityMethodInvestmentDividendsOrDistributions / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = rex_PatriotMember | 4,600,000 us-gaap_EquityMethodInvestmentDividendsOrDistributions / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = rex_PatriotMember |
Equity Method Investments | 40,201,000 us-gaap_EquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = rex_PatriotMember | 31,147,000 us-gaap_EquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = rex_PatriotMember |
Equity Method Investment, Underlying Equity in Net Assets | 38,900,000 us-gaap_EquityMethodInvestmentUnderlyingEquityInNetAssets / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = rex_PatriotMember |  |
Equity Method Initial Investments | 17,900,000 rex_EquityMethodInitialInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = rex_PatriotMember |  |
Patriot And Big River [Member] |  |  |
INVESTMENTS AND DEPOSITS (Details) [Line Items] |  |  |
Other Restricted Assets | 421,900,000 us-gaap_OtherRestrictedAssets / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = rex_PatriotAndBigRiverMember |  |
Proportionate Share of Restricted Net Assets | $ 57,700,000 rex_ProportionateShareOfRestrictedNetAssets / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = rex_PatriotAndBigRiverMember |  |

X
- Definition Agreement to invest during year. + References No definition available. + Details
Name: | rex_AgreementToInvestDuringYear
Namespace Prefix: | rex_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Equity method initial investments. + References No definition available. + Details
Name: | rex_EquityMethodInitialInvestments
Namespace Prefix: | rex_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | rex_INVESTMENTSANDDEPOSITSDetailsLineItems
Namespace Prefix: | rex_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Proportionate share of restricted net assets as of the reporting date. + References No definition available. + Details
Name: | rex_ProportionateShareOfRestrictedNetAssets
Namespace Prefix: | rex_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Quantity of ethanol shipped. + References No definition available. + Details
Name: | rex_QuantityOfEthanolShipped
Namespace Prefix: | rex_
Data Type: | num:volumeItemType
Balance Type: | na
Period Type: | duration

X
- Definition This item represents disclosure of the amount of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporation; these investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13 -Article 5 + Details
Name: | us-gaap_EquityMethodInvestmentDividendsOrDistributions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571 + Details
Name: | us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35755396&loc=d3e33749-111570 + Details
Name: | us-gaap_EquityMethodInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This item represents the entity's ownership percentage in the investee multiplied by the investee's total equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571 + Details
Name: | us-gaap_EquityMethodInvestmentUnderlyingEquityInNetAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 9 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35755396&loc=d3e33749-111570 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.12) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 11 -Article 7 + Details
Name: | us-gaap_IncomeLossFromEquityMethodInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Total assets that cannot be used for operating purposes because of contract or regulatory requirements that are in effect for a period that extends beyond one year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_OtherRestrictedAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of consolidated retained earnings that represent undistributed (not yet received) earnings from 50% or less owned persons accounted for by the equity method (equity method investees). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6462270&loc=d3e57205-112772 + Details
Name: | us-gaap_RetainedEarningsUndistributedEarningsFromEquityMethodInvestees
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=rex_BigRiverMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=rex_PatriotAndBigRiverMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=rex_PatriotMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |