Derivative Instruments (Tables)

12 Months Ended

Dec. 31, 2012

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments in Statement of Financial Position Fair Value

The following sets forth a summary of the distribution of the net fair value of the Company’s derivative instruments by counterparty:

Counterparty	December 31, 2012		December 31, 2011
Credit Suisse	40	%	68	%
BNP Paribas	33	%	19	%
Societe Generale	22	%	2	%
BBVA Compass	3	%	—	%
Wells Fargo	2	%	—	%
Shell Energy North America (US) LP	—	%	6	%
Credit Agricole	—	%	5	%
Total	100	%	100	%

Schedule Of U.S. Natural Gas Derivative Positions

The following sets forth a summary of the Company’s natural gas derivative positions at average NYMEX prices as of December 31, 2012.

Period	Volume (in MMBtu)	Weighted Average Floor Price ($/MMBtu)		Weighted Average Ceiling Price ($/MMBtu)
2013	18,250,000	$	4.63	$	4.63
2014	3,650,000	$	—	$	5.50

The following

Schedule Of U.S. Crude Oil Derivative Positions

The following sets forth a summary of the Company’s crude oil derivative positions at average NYMEX prices as of December 31, 2012.

Period	Volume (in Bbls)	Weighted Average Floor Price ($/Bbls)		Weighted Average Ceiling Price ($/Bbls)
2013	2,774,000	$	88.91	$	102.43
2014	2,555,000	$	90.06	$	98.51
2015	1,441,750	$	89.54	$	96.49
2016	244,000	$	85.00	$	104.00

In c

Schedule of U.S. Crude Oil Protective Put Spreads

In connection with the crude oil derivative instruments above, the Company has entered into protective put spreads. For 2014, at market prices below the short put price of $65.00, the floor price becomes the market price plus the put spread of $20.00 on 182,500 of the 2,555,000 Bbls and the remaining 2,372,500 Bbls would have a floor price of $90.06.

Period	Volumes (in Bbls)	Weighted Average Short Put  Price ($/Bbl)		Weighted Average Put Spread ($/Bbl)
2014	182,500	$	65.00	$	20.00
2015	365,000	$	65.00	$	20.00
2016	244,000	$	65.00	$	20.00

Schedule Of Derivative Instruments

For the years ended December 31, 2012, 2011 and 2010, the Company recorded the following related to its oil and gas derivative instruments:

	Year Ended December 31,
	2012			2011		2010
	(In thousands)
Realized gain (loss) on derivative instruments, net	$	41,122		$	35,452	$	33,218
Unrealized gain (loss) on derivative instruments, net	(9,751		)	12,971		14,564
Gain (loss) on derivative instruments, net	$	31,371		$	48,423	$	47,782