Capitalized costs proven undeveloped oil and gas assets properties.

No definition available.

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- Definition

Non managing membership interest percentage.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Number of barrel of oil built per day.

+ References

No definition available.

+ Details

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Namespace Prefix:	PTRC_
Data Type:	num:energyItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of drilled exploration or delineation wells.

+ References

No definition available.

+ Details

Name:	PTRC_NumberOfDrilledExplorationOrDelineationWells
Namespace Prefix:	PTRC_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of service and observation wells.

+ References

No definition available.

+ Details

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Namespace Prefix:	PTRC_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of steam injection wells.

+ References

No definition available.

+ Details

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Namespace Prefix:	PTRC_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage Of Acquisition Of Ownership Interest.

+ References

No definition available.

+ Details

Name:	PTRC_PercentageOfAcquisitionOfOwnershipInterest
Namespace Prefix:	PTRC_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage of success rate.

+ References

No definition available.

+ Details

Name:	PTRC_PercentageOfSuccessRate
Namespace Prefix:	PTRC_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage Of Working Interest.

+ References

No definition available.

+ Details

Name:	PTRC_PercentageOfWorkingInterest
Namespace Prefix:	PTRC_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Area of land held.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

- Definition

Capitalized costs of proved properties incurred for any combination mineral interests acquisitions; wells and related equipment; support equipment and facilities; and uncompleted wells and equipment and other costs not previously disclosed within this table.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 932

-SubTopic 235

-Section 50

-Paragraph 13

-URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e61901-109447

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 932

-SubTopic 360

-Glossary Proved Properties

-URI http://asc.fasb.org/extlink&oid=6522428

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Properties

-URI http://asc.fasb.org/extlink&oid=21914647

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Area spaced or assigned to productive wells in which a working interest is owned.

+ References

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

-Publisher SEC

-Name Industry Guide

-Number 2

-Paragraph 4

-Subparagraph A

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

- Definition

Fractional interest owned based on working interests or other economic arrangements of area spaced or assigned to productive wells.

+ References

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

-Publisher SEC

-Name Industry Guide

-Number 2

-Paragraph 4

-Subparagraph A

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

- Definition

Net long-term land leases which are capitalized as part of real property.

+ References

No definition available.

+ Details

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

- Definition

The expense recorded to reduce the value of oil and gas assets consisting of proved properties and unproved properties as the estimate of future successful production from these properties is reduced.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 932

-SubTopic 360

-Section 35

-Paragraph 11

-URI http://asc.fasb.org/extlink&oid=28370743&loc=d3e66150-109466

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6391110&loc=d3e2921-110230

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash outflow to acquire asset without physical form usually arising from contractual or other legal rights, excluding goodwill.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

+ Details

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

- Definition

The cash outflow to purchase long lived physical asset for use in the normal oil and gas operations and to purchase mineral interests in oil and gas properties not intended for resale.

+ References

+ Details

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

- Definition

The total number of producing oil wells and oil wells capable of production, in which the entity owns a fractional working interest.

+ References

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

-Publisher SEC

-Name Industry Guide

-Number 2

-Paragraph 4

-Subparagraph A

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Details

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Namespace Prefix:
Data Type:	na
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- Details

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Namespace Prefix:
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- Details

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- Details

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Oil and Gas Assets (Details Narrative) (USD $)	9 Months Ended	12 Months Ended	3 Months Ended
Oil and Gas Assets (Details Narrative) (USD $)	Jan. 31, 2015 acre	Apr. 30, 2014	Jan. 31, 2015	May 30, 2014
Cash paid for purchase assets	$ 2,000,000
Non-Managing membership interest	25.00%
Gross acres of oil and gas leases	115,000us-gaap_GasAndOilAreaDevelopedGross		115,000us-gaap_GasAndOilAreaDevelopedGross
Land subject to leases, net	85,000us-gaap_GasAndOilAreaDevelopedNet		85,000us-gaap_GasAndOilAreaDevelopedNet
Value of leased land	12,200,000us-gaap_GroundLeasesNet		12,200,000us-gaap_GroundLeasesNet
Impairment of oil and gas assets		4,713,973us-gaap_ImpairmentOfOilAndGasProperties
Kansas [Member]
Cash paid for purchase assets		2,000,000
Non-Managing membership interest		25.00%
Gross acres of oil and gas leases	115,000		115,000
Land subject to leases, net	85,000		85,000
Value of leased land	12,200,000		12,200,000
Impairment of oil and gas assets		4,638,973
Oklahoma [Member]
Proved developed oil and gas assets				2,460,632
Proven undeveloped oil and gas assets				5,921,641
Assets purchased			$ 343,239
Missouri [Member]
Gross acres of oil and gas leases	1,272		1,272
Percentage of working interest	98.40%		98.40%
Number of barrel of oil built per day	1,000		1,000
Number of production wells	116		116
Number of steam injection wells	39		39
Number of service and observation wells	14		14
Number of drilled exploration or delineation wells	73		73
Percentage of success rate	67.00%		67.00%
Bandolier Energy LLC. [Member] \| Oklahoma [Member]
Percentage of acquisition of ownership interest				50.00%
Area of land for oil and gas				106,000
Spyglass Energy Group, LLC [Member]
Area of land for oil and gas				106,000