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Fair Value Measurements (Tables)
 12 Months Ended
Dec. 31, 2013
Fair Value Disclosures [Abstract]  
Recurring Fair Value Measurements
The following tables set forth our recurring fair value measurements:
 
 
December 31, 2013
 
Level 2
 
Level 3
 
Effect of Netting
 
Total
 
(In thousands)
Financial assets (liabilities):
 
 
 
 
 
 
 
Commodity derivatives:
 
 
 
 
 
 
 
Assets
$
1,978

 
$
20

 
$
(1,483
)
 
$
515

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

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

 
$
(5,046
)

 
December 31, 2012
 
Level 2
 
Level 3
 
Effect of Netting
 
Total
 
(In thousands)
Financial assets (liabilities):
 
 
 
 
 
 
 
Commodity derivatives:
 
 
 
 
 
 
 
Assets
$
18,555

 
$
—

 
$
(2,003
)
 
$
16,552

Liabilities
(3,918
)
 
(595
)
 
2,003

 
(2,510
)
 
$
14,637

 
$
(595
)
 
$
—

 
$
14,042
Reconciliations Of Level 3 Fair Value Measurements
The following tables are reconciliations of our level 3 fair value measurements: 
 
Net Derivatives
 
For the Year Ended,
 
December 31, 2013
 
December 31, 2012
 
(In thousands)
Beginning of period
$
(595
)
 
$
33,615

Total gains or losses:
 
 
 
Included in earnings (1)
(2,637
)
 
24,484

Included in other comprehensive income (loss)
—

 
(11,641
)
Settlements
637

 
(25,129
)
Transfers out of Level 3 into Level 2
—

 
(21,924
)
End of period
$
(2,595
)
 
$
(595
)
Total gains (losses) for the period included in earnings attributable to the change in unrealized loss relating to assets still held at end of period
$
(2,000
)
 
$
(645
)
_________________________
(1)
Commodity sales collars are reported in the consolidated statements of income in oil and gas revenues (for cash flow hedges), and gain (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 December 31, 2013:
 
Commodity (1)
Fair Value
Valuation Technique
Unobservable Input
Range
 
(In thousands)
 
 
 
Oil collars
$
(2,246
)
Discounted cash flow
Forward commodity price curve
$0.20-$5.29
Natural gas collar
$
(349
)
Discounted cash flow
Forward commodity price curve
$0.00-$0.39
 _________________________
(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.