XML 107 R92.htm IDEA: XBRL DOCUMENT v2.4.1.9

Supplemental Oil and Gas Disclosures - Results of Operations for Oil and Natural Gas Producing Activities (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Oil and Gas Exploration and Production Industries Disclosures [Abstract]
Revenues	$ 1,304,004us-gaap_ResultsOfOperationsRevenueFromOilAndGasProducingActivities	$ 1,084,412us-gaap_ResultsOfOperationsRevenueFromOilAndGasProducingActivities	$ 670,491us-gaap_ResultsOfOperationsRevenueFromOilAndGasProducingActivities
Production costs	326,381us-gaap_ResultsOfOperationsProductionOrLiftingCosts	221,095us-gaap_ResultsOfOperationsProductionOrLiftingCosts	127,146us-gaap_ResultsOfOperationsProductionOrLiftingCosts
Depreciation, depletion and amortization	400,118us-gaap_ResultsOfOperationsDepreciationDepletionAndAmortizationAndValuationProvisions	298,999us-gaap_ResultsOfOperationsDepreciationDepletionAndAmortizationAndValuationProvisions	202,398us-gaap_ResultsOfOperationsDepreciationDepletionAndAmortizationAndValuationProvisions
Exploration costs	3,064us-gaap_ResultsOfOperationsExplorationExpense	2,260us-gaap_ResultsOfOperationsExplorationExpense	3,250us-gaap_ResultsOfOperationsExplorationExpense
Impairment of oil and gas properties	47,238us-gaap_ResultsOfOperationsImpairmentOfOilAndGasProperties	1,168us-gaap_ResultsOfOperationsImpairmentOfOilAndGasProperties	3,581us-gaap_ResultsOfOperationsImpairmentOfOilAndGasProperties
Income tax expense	197,701us-gaap_ResultsOfOperationsIncomeTaxExpense	196,312us-gaap_ResultsOfOperationsIncomeTaxExpense	116,941us-gaap_ResultsOfOperationsIncomeTaxExpense
Results of operations for oil and natural gas producing activities	$ 329,502us-gaap_ResultsOfOperationsOilAndGasProducingActivitiesNetIncomeExcludingCorporateOverheadAndInterestCosts	$ 364,578us-gaap_ResultsOfOperationsOilAndGasProducingActivitiesNetIncomeExcludingCorporateOverheadAndInterestCosts	$ 217,175us-gaap_ResultsOfOperationsOilAndGasProducingActivitiesNetIncomeExcludingCorporateOverheadAndInterestCosts

X

- Details

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

X

- Definition

Depreciation, depletion and amortization, and valuation provisions (impairments) related to oil and gas producing activities.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 932

-SubTopic 235

-Section 50

-Paragraph 23

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62136-109447

+ Details

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

X

- Definition

Exploration costs from oil and gas producing activities.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 932

-SubTopic 235

-Section 50

-Paragraph 23

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62136-109447

+ Details

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

X

- Definition

Costs related to the impairment of oil and gas properties.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 932

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-10.(c)(3)(ii)(A)(1))

-URI http://asc.fasb.org/extlink&oid=27015464&loc=d3e511914-122862

+ Details

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

X

- Definition

Income tax expense for oil and gas producing activities.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 932

-SubTopic 235

-Section 50

-Paragraph 25

-URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62259-109447



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 932

-SubTopic 235

-Section 50

-Paragraph 23

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62136-109447

+ Details

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

X

- Definition

The results of operations for oil and gas producing activities, excluding corporate overhead and interest costs.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 932

-SubTopic 235

-Section 50

-Paragraph 26

-URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62299-109447



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 932

-SubTopic 235

-Section 50

-Paragraph 23

-Subparagraph (f)

-URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62136-109447

+ Details

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

X

- Definition

Production (lifting) costs from oil and gas producing activities, including but not limited to lease operating expense, production and ad valorem taxes, and transportation expense.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 932

-SubTopic 235

-Section 50

-Paragraph 23

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62136-109447

+ Details

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

X

- Definition

Total revenues from oil and gas producing activities.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 932

-SubTopic 235

-Section 50

-Paragraph 23

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62136-109447



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 932

-SubTopic 235

-Section 50

-Paragraph 24

-URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62246-109447

+ Details

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