Derivative Activities (Tables)

6 Months Ended

Jun. 30, 2012

Derivative Activities [Abstract]

Notional Volumes Of Commodity Derivative Contracts

Commodity	Index		Jul 1 - Dec 31, 2012		2013		2014		2015		2016		2017
Oil positions:
Swaps
Hedged Volume (Bbls/d)	WTI		5,872		6,543		5,661		4,540		2,480		3,730
Average price ($/Bbls)		$	100.34	$	99.75	$	97.91	$	96.87	$	92.07	$	87.57
Collars
Hedged Volume (Bbls/d)	WTI						425		1,025		1,500
Average floor price ($/Bbls)						$	90.00	$	90.00	$	80.00
Average ceiling price ($/Bbls)						$	106.50	$	110.00	$	102.00
Natural gas positions:
Swaps
Hedged Volume (MMBtu/d)	Henry Hub		30,267		29,674		25,907		6,520		11,350		10,445
Average price ($/MMBtu)		$	5.83	$	6.07	$	6.23	$	5.43	$	4.27		4.47
Basis Swaps
Hedged Volume (MMBtu/d)	Henry Hub		20,709		18,466		17,066		14,400
Average price ($/MMBtu)		$	(0.15)	$	(0.17)	$	(0.19)	$	(0.19)
Collars
Hedged Volume (MMBtu/d)	Henry Hub		2,609		2,466		4,966		18,000
Average floor price ($/MMBtu)		$	6.50	$	6.50	$	5.74	$	5.00
Average ceiling price ($/MMBtu)		$	8.60	$	8.65	$	7.51	$	7.48
Puts
Hedged Volume (MMBtu/d)	Henry Hub								420		11,350		10,445
Average price ($/MMBtu)								$	4.00	$	4.00	$	4.00

Fair Value Of Derivative Contracts

		June 30, 2012				December 31, 2011
		Asset		Liability		Asset		Liability
		Derivatives		Derivatives		Derivatives		Derivatives
Commodity contracts	$	177,078	$	3,622	$	103,233	$	2,502
Interest rate contracts		-		26,242		20		23,973
	$	177,078	$	29,864	$	103,253	$	26,475
Commodity
Current	$	61,281	$	630	$	32,683	$	1,284
Noncurrent		115,797		2,992		70,550		1,218
	$	177,078	$	3,622	$	103,233	$	2,502
Interest
Current	$	-	$	8,843	$	-	$	8,285
Noncurrent		-		17,399		20		15,688
	$	-	$	26,242	$	20	$	23,973
Total Derivatives
Current	$	61,281	$	9,473	$	32,683	$	9,569
Noncurrent		115,797		20,391		70,570		16,906
	$	177,078	$	29,864	$	103,253	$	26,475

Gains (Losses) Of Derivative Contacts By Statement Of Operations Location

		Three Months Ended				Six Months Ended
		June 30, 2012		June 30, 2011		June 30, 2012		June 30, 2011
Realized gains (losses):
Commodity contracts (1)	$	14,222	$	(42,161)	$	22,293	$	(40,852)
Interest rate swaps (2)		(2,326)		(948)		(4,629)		(1,262)
Total	$	11,896	$	(43,109)	$	17,664	$	(42,114)
Unrealized gains (losses):
Commodity contracts (1)	$	89,682	$	68,460	$	67,913	$	6,855
Interest rate swaps (2)		(2,703)		(10,905)		(2,289)		(10,047)
Total	$	86,979	$	57,555	$	65,624	$	(3,192)
Total gains (losses):
Commodity contracts (1)	$	103,904	$	26,299	$	90,206	$	(33,997)
Interest rate swaps (2)		(5,029)		(11,853)		(6,918)		(11,309)
Total	$	98,875	$	14,446	$	83,288	$	(45,306)