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Fair Value Measurements (Tables)
9 Months Ended
Sep. 30, 2013
Fair Value Disclosures [Abstract]  
Recurring Fair Value Measurements
The following tables set forth our recurring fair value measurements:
 
September 30, 2013
 
Level 2
 
Level 3
 
Gross Amounts
 
Effect of Netting
 
Net Amounts Presented
 
(In thousands)
Financial assets (liabilities):
 
 
 
 
 
 
 
 
 
Commodity derivatives:
 
 
 
 
 
 
 
 
 
Assets
$
8,473

 
$

 
$
8,473

 
$
(2,826
)
 
$
5,647

Liabilities
(7,622
)
 
(2,622
)
 
(10,244
)
 
2,826

 
(7,418
)
 
$
851

 
$
(2,622
)
 
$
(1,771
)
 
$

 
$
(1,771
)
 
 
December 31, 2012
 
Level 2
 
Level 3
 
Gross Amounts
 
Effect of Netting
 
Net Amounts Presented
 
(In thousands)
Financial assets (liabilities):
 
 
 
 
 
 
 
 
 
Commodity derivatives:
 
 
 
 
 
 
 
 
 
Assets
$
18,555

 
$

 
$
18,555

 
$
(2,003
)
 
$
16,552

Liabilities
(3,918
)
 
(595
)
 
(4,513
)
 
2,003

 
(2,510
)
 
$
14,637

 
$
(595
)
 
$
14,042

 
$

 
$
14,042

Reconciliations Of Level 3 Fair Value Measurements
The following tables are reconciliations of our level 3 fair value measurements: 
 
 
 
 
 
Commodity Collars
 
Three Months Ended
September 30,
 
Nine Months Ended
September 30,
 
2013
 
2012
 
2013
 
2012
 
(In thousands)
Beginning of period
$
1,446

 
$
8,130

 
$
(595
)
 
$
33,615

Total gains or losses:
 
 
 
 
 
 
 
Included in earnings (1)
(3,949
)
 
2,241

 
(2,544
)
 
19,114

Included in other comprehensive income (loss)
(119
)
 
(4,194
)
 
(119
)
 
(7,770
)
Settlements

 
(4,574
)
 
636

 
(21,432
)
Transfers out of Level 3 into Level 2

 

 

 
(21,924
)
End of period
$
(2,622
)
 
$
1,603

 
$
(2,622
)
 
$
1,603

Total losses for the period included in earnings attributable to the change in unrealized loss relating to assets still held at end of period
$
(3,949
)
 
$
(2,333
)
 
$
(1,908
)
 
$
(2,318
)
(1)
Commodity collars are reported in the Unaudited Condensed Consolidated Statements of Income in oil and natural gas revenues (for cash flow hedges) and loss on derivatives not designated as hedges and hedge ineffectiveness, net, respectively.

Schedule Of Quantitative Information About Unobservable Inputs
The following table provides quantitative information about our Level 3 unobservable inputs at September 30, 2013:
Commodity (1)
Fair Value
Valuation Technique
Unobservable Input
Range
 
(In thousands)
 
 
 
Oil collars
$
(2,503
)
Discounted cash flow
Forward commodity price curve
($7.79) - $6.86
Natural gas collar
$
(119
)
Discounted cash flow
Forward commodity price curve
($0.19) - $0.03
 
(1)
The commodity contracts detailed in this category include non-exchange-traded natural gas and crude oil collars that are valued based on NYMEX. The forward pricing range represents the low and high price expected to be paid or received within the settlement period.