SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) (Tables)

12 Months Ended

Dec. 31, 2012

Selected Quarterly Financial Data

	2012
	March			June			September			December			Total
Revenues and other income:
Natural gas, NGLs and oil sales	$	317,617		$	298,349		$	337,040		$	398,688		$	1,351,694
Derivative fair value (loss) income		(60,833	)		148,569			(40,728	)		(5,571	)		41,437
(Loss) gain on the sale of assets		(10,426	)		(3,227	)		949			61,836			49,132
Brokered natural gas, marketing and other		4,597			5,240			2,519			3,085			15,441
Total revenue and other income		250,955			448,931			299,780			458,038			1,457,704
Costs and expenses:
Direct operating		29,022			27,041			29,628			30,214			115,905
Transportation, gathering and compression		40,820			44,744			51,600			55,281			192,445
Production and ad valorem taxes		36,634			11,786			8,819			9,881			67,120
Brokered natural gas marketing		4,062			6,491			4,887			4,994			20,434
Exploration		21,516			15,517			14,752			18,022			69,807
Abandonment and impairment of unproved properties		20,289			43,641			40,118			21,230			125,278
General and administrative		38,729			44,005			44,497			46,582			173,813
Deferred compensation plan		(7,830	)		9,333			20,052			(14,352	)		7,203
Interest expense		37,205			42,888			43,997			44,708			168,798
Loss on early extinguishment of debt		—			—			—			11,063			11,063
Depletion, depreciation and amortization		100,151			108,802			123,059			113,216			445,228
Impairment of proved properties and other		—			—			1,281			34,273			35,554
Total costs and expenses		320,598			354,248			382,690			375,112			1,432,648
(Loss) income from continuing operations before income taxes		(69,643	)		94,683			(82,910	)		82,926			25,056
Income tax (benefit) expense
Current		—			—			—			(1,778	)		(1,778	)
Deferred		(27,843	)		39,007			(29,074	)		31,742			13,832
		(27,843	)		39,007			(29,074	)		29,964			12,054
Net (loss) income	$	(41,800	)	$	55,676		$	(53,836	)	$	52,962		$	13,002
(Loss) income per common share:
Basic	$	(0.26	)	$	0.34		$	(0.34	)	$	0.33		$	0.08
Diluted	$	(0.26	)	$	0.34		$	(0.34	)	$	0.32		$	0.08

	2011
	March			June			September			December			Total
Revenues and other income:
Natural gas, NGLs and oil sales	$	251,963		$	285,353		$	304,230		$	331,720		$	1,173,266
Derivative fair value (loss) income		(40,834	)		53,039			65,761			(37,879	)		40,087
Gain (loss) on the sale of assets		139			(1,622	)		203			3,540			2,260
Brokered natural gas, marketing and other		3,911			1,506			3,775			5,837			15,029
Total revenue and other income		215,179			338,276			373,969			303,218			1,230,642
Costs and expenses:
Direct operating		28,717			28,509			29,828			25,918			112,972
Transportation, gathering and compression		25,082			28,666			32,431			34,576			120,755
Production and ad valorem taxes		6,879			7,550			7,317			5,920			27,666
Brokered natural gas and marketing		2,521			2,981			3,333			3,151			11,986
Exploration		27,187			11,592			17,606			24,982			81,367
Abandonment and impairment of unproved properties		16,537			18,900			16,627			27,639			79,703
General and administrative		33,959			39,120			35,907			42,205			151,191
Deferred compensation plan		30,630			(5,778	)		8,717			9,640			43,209
Interest expense		24,779			31,383			34,181			34,709			125,052
Loss on early extinguishment of debt		—			18,580			(4	)		—			18,576
Depletion, depreciation and amortization		72,216			78,294			93,619			97,092			341,221
Impairment of proved properties		—			—			38,681			—			38,681
Total costs and expenses		268,507			259,797			318,243			305,832			1,152,379
(Loss) income from continuing operations before income taxes		(53,328	)		78,479			55,726			(2,614	)		78,263
Income tax (benefit) expense
Current		—			8			(7	)		636			637
Deferred		(19,897	)		32,695			22,547			(425	)		34,920
		(19,897	)		32,703			22,540			211			35,557
(Loss) income from continuing operations		(33,431	)		45,776			33,186			(2,825	)		42,706
Discontinued operations, net of taxes		8,398			5,517			1,569			(164	)		15,320
Net (loss) income	$	(25,033	)	$	51,293		$	34,755		$	(2,989	)	$	58,026
(Loss) income per common share:
Basic-(loss) income from continuing operations	$	(0.21	)	$	0.28		$	0.21		$	(0.02	)	$	0.26
-discontinued operations		0.05			0.04			0.01			—			0.10
-net (loss) income	$	(0.16	)	$	0.32		$	0.22		$	(0.02	)	$	0.36
Diluted-(loss) income from continuing operations	$	(0.21	)	$	0.28		$	0.20		$	(0.02	)	$	0.26
-discontinued operations		0.05			0.04			0.01			—			0.10
-net (loss) income	$	(0.16	)	$	0.32		$	0.21		$	(0.02	)	$	0.36