XML 50 R39.htm IDEA: XBRL DOCUMENT v3.21.2

DERIVATIVE FINANCIAL INSTRUMENTS - Additional information (Details) - Oil - Commodity Contract G - January 2022 through December 2022 - bbl	Sep. 30, 2021	May 21, 2021
Barrels of oil per month		26,750
Barrels per day	879

X

- Definition

Nominal number of units per month used to calculate payment on derivative.

+ References

No definition available.

+ Details

Name:	rei_DerivativeNonMonetaryNotionalAmountPerMonth
Namespace Prefix:	rei_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Nominal number of units used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5579245-113959

+ Details

Name:	us-gaap_DerivativeNonmonetaryNotionalAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	srt_ReserveQuantitiesByTypeOfReserveAxis=srt_OilReservesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

Name:	srt_StatementScenarioAxis=rei_January2022ThroughDecember2022Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: