XML 73 R58.htm IDEA: XBRL DOCUMENT v3.3.1.900

DERIVATIVE FINANCIAL INSTRUMENTS (Details) l in Millions	Jan. 31, 2016 USD ($) l
Disclosure Text Block Supplement [Abstract]
Quantity of Bushels under Forward Purchase Contract | l	0.7
Debt Instrument, Collateral Amount | $	$ 54,000

X

- Definition

Quantity of bushels under forward purchase contract.

+ References

No definition available.

+ Details

Name:	rex_QuantityOfBushelsUnderForwardPurchaseContract
Namespace Prefix:	rex_
Data Type:	num:volumeItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Amount of assets pledged to secure a debt instrument.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

+ Details

Name:	us-gaap_DebtInstrumentCollateralAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration