XML 55 R47.htm IDEA: XBRL DOCUMENT v3.23.3

Derivative Financial Instruments (Details)	3 Months Ended		9 Months Ended
	Oct. 31, 2023 USD ($) bu	Oct. 31, 2022 USD ($)	Oct. 31, 2023 USD ($) bu	Oct. 31, 2022	Jan. 31, 2023 USD ($) bu
Derivative Financial Instruments (Details) [Line Items]
Debt Instrument, Collateral Amount (in Dollars) | $	$ 1,700,000		$ 1,700,000		$ 1,700,000
Gain (Loss) on Derivative Instruments, Net, Sales and Revenue (in Dollars) | $	(20,000)	$ 8,000
Gain (Loss) on Derivative Instruments, Net, Pretax (in Dollars) | $	$ 10,600,000	$ 9,000
Corn [Member]
Derivative Financial Instruments (Details) [Line Items]
Description of Location of Gain (Loss) on Interest Rate Derivative Instruments Not Designated as Hedging Instruments in Financial Statements			$15.7	(12.9)
Ethanol [Member]
Derivative Financial Instruments (Details) [Line Items]
Description of Location of Gain (Loss) on Interest Rate Derivative Instruments Not Designated as Hedging Instruments in Financial Statements			$0.8	(1.1)
Assets [Member] | Corn [Member]
Derivative Financial Instruments (Details) [Line Items]
Forward Purchase Contracts, Quantity	13,800,000		13,800,000		12,800,000
Liability [Member] | Corn [Member]
Derivative Financial Instruments (Details) [Line Items]
Forward Purchase Contracts, Quantity					5,200,000
Short/Sell [Member] | Assets [Member] | Corn [Member]
Derivative Financial Instruments (Details) [Line Items]
Commodity Futures, Quantity	500,000		500,000		3,200,000
Short/Sell [Member] | Liability [Member] | Corn [Member]
Derivative Financial Instruments (Details) [Line Items]
Commodity Futures, Quantity	45,000		45,000		1,400,000
Long/Buy [Member] | Assets [Member] | Corn [Member]
Derivative Financial Instruments (Details) [Line Items]
Commodity Futures, Quantity	4,700,000		4,700,000		725,000
Long/Buy [Member] | Liability [Member] | Corn [Member]
Derivative Financial Instruments (Details) [Line Items]
Commodity Futures, Quantity	1,300,000		1,300,000

X

- References

No definition available.

+ Details

Name:	rex_CommodityFuturesQuantity
Namespace Prefix:	rex_
Data Type:	dtr:volumeItemType
Balance Type:	na
Period Type:	instant

X

- References

No definition available.

+ Details

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

X

- References

No definition available.

+ Details

Name:	rex_ForwardPurchaseContractsQuantity
Namespace Prefix:	rex_
Data Type:	dtr:volumeItemType
Balance Type:	na
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	rex_GainLossOnDerivativeInstrumentsNetSalesAndRevenue
Namespace Prefix:	rex_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount of assets pledged to secure a debt instrument.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480848/942-470-50-3

+ Details

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

X

- Definition

Description of where the net gain (loss) on interest rate derivatives not designated as hedging instruments are reported in the statement of income or other statement of financial performance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480434/815-10-50-4C

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480434/815-10-50-4A

+ Details

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

X

- Definition

Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480434/815-10-50-4A

+ Details

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

X

- Details

Name:	us-gaap_TradingActivityByTypeAxis=rex_CornMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_TradingActivityByTypeAxis=rex_EthanolMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_AssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_LiabilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ContractWithCustomerDurationAxis=rex_ShortSellMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ContractWithCustomerDurationAxis=rex_LongBuyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: