Name:	arex_ProvedDevelopedAndUndevelopedNaturalGasLiquidsReservesNet
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The net quantity of proved reserves as of the balance sheet date. Proved natural gas reserves are the estimated quantities of natural gas which geological and engineering data demonstrate with reasonable certainty to be recoverable.

No definition available.

Name:	arex_ProvedDevelopedAndUndevelopedNaturalGasReservesNet
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Additions to proved reserves resulting from (1) extensions of the proved acreage of previously discovered (old) reservoirs through additional drilling in periods after discovery and (2) discovery of new fields with proved reserves or of new reservoirs of proved reserves in old fields.

No definition available.

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Data Type:	num:energyItemType
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Period Type:	duration

The net quantity of proved reserves as of the balance sheet date. Proved oil reserves are the estimated quantities of crude oil and natural gas liquids which geological and engineering data demonstrate with reasonable certainty to be recoverable.

No definition available.

Name:	arex_ProvedDevelopedAndUndevelopedReservesNetBoe
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Data Type:	num:energyItemType
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Production of proved reserve.

No definition available.

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Data Type:	num:energyItemType
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Minerals in place purchased.

No definition available.

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Data Type:	num:energyItemType
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Revisions represents changes in previous estimates of proved reserves, either downward or upward, resulting from new information (except for an increase in proved acreage) normally obtained from development drilling and production history or resulting from change in economic factors.

No definition available.

Name:	arex_ProvedDevelopedAndUndevelopedReservesRevisionsOfPreviousEstimatesIncreaseDecreaseBoe
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Data Type:	num:energyItemType
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Net quantities of an enterprise's interests in proved developed reserves of crude oil. "Net" quantities of reserves include those relating to the enterprise's operating and nonoperating interests in properties. Quantities of reserves relating to royalty interests owned are included in "net" quantities if the necessary information is available to the enterprise. "Net" quantities does not include reserves relating to interests of others in properties owned by the enterprise. The unit of measure for reserve quantities is defined as "barrels" for oil.

No definition available.

Name:	arex_ProvedDevelopedReservesVolumeCrudeOil
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Net quantities of an enterprise's interests in proved developed reserves of natural gas."Net" quantities of reserves include those relating to the enterprise's operating and nonoperating interests in properties.Quantities of reserves relating to royalty interests owned are included in "net" quantities if the necessary information is available to the enterprise. "Net" quantities does not include reserves relating to interests of others in properties owned by the enterprise.The unit of measure for reserve quantities is defined as "cubic feet" or "cubic meters" for natural gas.

No definition available.

Name:	arex_ProvedDevelopedReservesVolumeGas
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Data Type:	num:volumeItemType
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Net quantities of an enterprise's interests in proved developed reserves of natural gas liquids. "Net" quantities of reserves include those relating to the enterprise's operating and nonoperating interests in properties. Quantities of reserves relating to royalty interests owned are included in "net" quantities if the necessary information is available to the enterprise. "Net" quantities does not include reserves relating to interests of others in properties owned by the enterprise. The unit of measure for reserve quantities is defined as "barrels" for gas liquids.

No definition available.

Name:	arex_ProvedDevelopedReservesVolumeNaturalGasLiquids
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Proved Developed Reserve Volume Equivalent

No definition available.

Name:	arex_ProvedDevelopedReserveVolumeEquivalent
Namespace Prefix:	arex_
Data Type:	num:energyItemType
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Period Type:	instant

Net quantities of an enterprise's interests in proved undeveloped reserves of either crude oil (including condensate and natural gas liquids), natural gas, synthetic oil and gas, or other renewable natural resource that is intended to be upgraded into synthetic oil and gas as of the beginning and the end of the year. "Net" quantities of reserves include those relating to the enterprise's operating and non-operating interests in properties. Quantities of reserves relating to royalty interests owned are included in "net" quantities if the necessary information is available to the enterprise. "Net" quantities does not include reserves relating to interests of others in properties owned by the enterprise. The unit of measure for reserve quantities is defined as "barrels" for oil and synthetic oil reserves or "cubic feet" or "cubic meters" for natural gas and synthetic gas reserves.

No definition available.

Name:	arex_ProvedUndevelopedReservesNet
Namespace Prefix:	arex_
Data Type:	num:energyItemType
Balance Type:	na
Period Type:	instant

Proved Undeveloped Reserves Volume Crude Oil

No definition available.

Name:	arex_ProvedUndevelopedReservesVolumeCrudeOil
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Data Type:	num:volumeItemType
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Proved Undeveloped Reserves Volume Gas

No definition available.

Name:	arex_ProvedUndevelopedReservesVolumeGas
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Data Type:	num:volumeItemType
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Period Type:	instant

Proved Undeveloped Reserves Volume Natural Gas Liquids

No definition available.

Name:	arex_ProvedUndevelopedReservesVolumeNaturalGasLiquids
Namespace Prefix:	arex_
Data Type:	num:volumeItemType
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Additions to proved reserves that result from (1) extension of the proved acreage of previously discovered (old) reservoirs through additional drilling in periods after discovery and (2) discovery of new fields with proved reserves or of new reservoirs of proved reserves in old fields.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 932

-SubTopic 235

-Section 50

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 10

-Paragraph a

-Subparagraph 2

-Article 4

Reference 2: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

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Production of proved reserves.

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

-Publisher FASB

-Name Accounting Standards Codification

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Purchase of minerals in place.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 932

-SubTopic 235

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Data Type:	num:volumeItemType
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Revisions represent changes in previous estimates of proved reserves, either upward or downward, resulting from new information (except for an increase in proved acreage) normally obtained from development drilling and production history or resulting from change in economic factors.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 932

-SubTopic 235

-Section 50

-Paragraph 5

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e61831-109447

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 19

-Paragraph 59F

-Subparagraph a

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.