Commitments And Contingencies [Line Items]

No definition available.

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- Definition

The maximum duration period applicable to the existing commitments.

+ References

No definition available.

+ Details

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- Definition

Total amount of product committed to be supplied under existing contracts or agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1207
-Paragraph (a)
-Subparagraph (2)

+ Details

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- Definition

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

The amount of expenses related to oil and gas producing activities.

+ References

No definition available.

+ Details

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

- Definition

The minimum number of units that must be purchased, in connection with an unconditional purchase obligation that has not been recognized for financial reporting purposes.

+ References

No definition available.

+ Details

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Period Type:	instant

- Details

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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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Namespace Prefix:
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- Details

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Commitments and Contingencies - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2016 USD ($) MMcf	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2016 MBbls
Commitments And Contingencies [Line Items]
Rental expense \| $	$ 6.3	$ 7.2	$ 5.0
Long term commitments
Commitments And Contingencies [Line Items]
Contract term, maximum	10 years
Crude oil \| Long term commitments
Commitments And Contingencies [Line Items]
Minimum quantity of delivery \| MBbls				41,100
Natural gas \| Long term commitments
Commitments And Contingencies [Line Items]
Minimum quantity of delivery	211,100			23,000
Fresh Water \| Long term commitments
Commitments And Contingencies [Line Items]
Minimum quantity to be purchased \| MBbls				31,700
Volume Commitment Agreement
Commitments And Contingencies [Line Items]
Transportation and purchase costs incurred \| $	$ 16.1	$ 7.3	$ 5.6