XML 41 R71.htm IDEA: XBRL DOCUMENT v2.4.0.8

Derivative Activities - Derivative Volumes Hedged and Average Hedge Prices (Detail)	Dec. 31, 2013 MMBTU
Natural Gas 2014 | Collars
Derivative [Line Items]
Volume Hedged	447,500
Average floor price	3.84
Average cap price	4.48
Natural Gas 2014 | Swaps
Derivative [Line Items]
Volume Hedged	219,397
Average hedge price	4.17
Natural Gas 2015 | Collars
Derivative [Line Items]
Volume Hedged	145,000
Average floor price	4.07
Average cap price	4.56
Natural Gas 2015 | Swaps
Derivative [Line Items]
Volume Hedged	154,966
Average hedge price	4.16
Natural Gas 2016 | Swaps
Derivative [Line Items]
Volume Hedged	20,000
Average hedge price	4.16
Crude Oil 2014 | Collars
Derivative [Line Items]
Volume Hedged	2,000
Average floor price	85.55
Average cap price	100.00
Crude Oil 2014 | Swaps
Derivative [Line Items]
Volume Hedged	9,004
Average hedge price	94.43
Crude Oil 2015 | Swaps
Derivative [Line Items]
Volume Hedged	4,000
Average hedge price	89.60
NGLs (C3 - Propane) 2014 | Swaps
Derivative [Line Items]
Volume Hedged	11,000
Average hedge price	1.01
NGLs (NC4 - Normal Butane) 2014 | Swaps
Derivative [Line Items]
Volume Hedged	3,000
Average hedge price	1.33
NGLs (C5 - Natural Gasoline) 2014 | Swaps
Derivative [Line Items]
Volume Hedged	1,000
Average hedge price	2.11

X

- Definition

Aggregate notional amount of derivative expressed in nonmonetary units. For example, the number of barrels specified in a fuel oil forward purchase contract.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

+ Details

Name:	invest_DerivativeNonmonetaryNotionalAmount
Namespace Prefix:	invest_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The average cap rate on a group of price risk derivatives such as caps or collars. A payment or receipt is triggered if the market rate exceeds the cap rate on the contract.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeAverageCapPrice
Namespace Prefix:	us-gaap_
Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The average floor rate on a group of price risk derivatives such as floors or collars. A payment or receipt is triggered if the market rate falls below the floor rate on the contract.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeAverageFloorPrice
Namespace Prefix:	us-gaap_
Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	instant

X

- Details

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

X

- Definition

Average fixed price related to the group of price risk swap derivatives.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeSwapTypeAverageFixedPrice
Namespace Prefix:	us-gaap_
Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	instant