XML 17 R53.htm IDEA: XBRL DOCUMENT v2.4.0.8

Investments (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jul. 31, 2013	Jul. 31, 2012	Jan. 31, 2013
Investments (Details) [Line Items]
Retained Earnings, Undistributed Earnings from Equity Method Investees	$ 27.2		$ 21.2
Proceeds from Equity Method Investment, Dividends or Distributions	0.2	2.0
Patriot And Big River [Member]
Investments (Details) [Line Items]
Proportionate Share of Restricted Net Assets	$ 381.9		$ 367.6

X

- Details

Name:	rex_InvestmentsDetailsLineItems
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

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

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