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Fair Value Measurements (Tables)
 3 Months Ended
Mar. 31, 2014
Fair Value Disclosures [Abstract]  
Recurring Fair Value Measurements
The following tables set forth our recurring fair value measurements:
 
March 31, 2014
 
Level 2
 
Level 3
 
Gross Amounts
 
Effect of Netting
 
Net Amounts Presented
 
(In thousands)
Financial assets (liabilities):
 
 
 
 
 
 
 
 
 
Commodity derivatives:
 
 
 
 
 
 
 
 
 
Assets
$
—

 
$
—

 
$
—

 
$
—

 
$
—

Liabilities
(10,076
)
 
(4,464
)
 
(14,540
)
 
—

 
(14,540
)
 
$
(10,076
)
 
$
(4,464
)
 
$
(14,540
)
 
$
—

 
$
(14,540
)
 
 
December 31, 2013
 
Level 2
 
Level 3
 
Gross Amounts
 
Effect of Netting
 
Net Amounts Presented
 
(In thousands)
Financial assets (liabilities):
 
 
 
 
 
 
 
 
 
Commodity derivatives:
 
 
 
 
 
 
 
 
 
Assets
$
1,978

 
$
20

 
$
1,998

 
$
(1,483
)
 
$
515

Liabilities
(4,429
)
 
(2,615
)
 
(7,044
)
 
1,483

 
(5,561
)
 
$
(2,451
)
 
$
(2,595
)
 
$
(5,046
)
 
$
—

 
$
(5,046
)
Reconciliations Of Level 3 Fair Value Measurements
The following table is a reconciliation of our level 3 fair value measurements for the three months ended March 31: 
 
2014
 
2013
 
(In thousands)
Beginning of period
$
(2,595
)
 
$
(595
)
Total gains or losses:
 
 
 
Included in earnings (1)
(3,428
)
 
(1,941
)
Included in other comprehensive income (loss)
—

 
—

Settlements
1,559

 
—

End of period
$
(4,464
)
 
$
(2,536
)
Total losses for the period included in earnings attributable to the change in unrealized loss relating to assets still held at end of period
$
(1,869
)
 
$
(1,941
)
 _________________________
(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 March 31, 2014:
 
Fair Value
Valuation Technique
Unobservable Input
Range
 
(In thousands)
 
 
 
Oil collars
$
(3,723
)
Discounted cash flow
Forward commodity price curve
$0.11-$6.73
Natural gas collars
$
(741
)
Discounted cash flow
Forward commodity price curve
$0.00-$0.53
_________________________
(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 received within the settlement period.