XML 22 R79.htm IDEA: XBRL DOCUMENT v2.4.1.9

Schedule II - VALUATION AND QUALIFYING ACCOUNTS (Details) - VALUATION AND QUALIFYING ACCOUNTS (USD $)	12 Months Ended
	Jan. 31, 2015	Jan. 31, 2014	Jan. 31, 2013
2015:
Balance	$ 2,017,000us-gaap_DeferredTaxAssetsValuationAllowance	$ 1,891,000us-gaap_DeferredTaxAssetsValuationAllowance	$ 1,676,000us-gaap_DeferredTaxAssetsValuationAllowance
Additions Charged to Cost and Expenses	(265,000)us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount	126,000us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount	215,000us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount
Deductions Charges for Which Reserves Were Created	265,000us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount	(126,000)us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount	(215,000)us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount
Balance	$ 1,752,000us-gaap_DeferredTaxAssetsValuationAllowance	$ 2,017,000us-gaap_DeferredTaxAssetsValuationAllowance	$ 1,891,000us-gaap_DeferredTaxAssetsValuationAllowance

X

- Details

Name:	rex_a2015Abstract
Namespace Prefix:	rex_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319

+ Details

Name:	us-gaap_DeferredTaxAssetsValuationAllowance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 45

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e32123-109318

+ Details

Name:	us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration