(17)	Selected Quarterly Financial Data (Unaudited)

The following tables set forth unaudited financial information on a quarterly basis for each of the last two years. Fourth quarter 2015 includes a loss of $407.7 million from the sale of our Virginia and West Virginia oil and gas properties and impairment expense of $87.9 million related to oil and gas properties in the Texas Panhandle and South Texas. Third quarter 2015 includes impairment expense of $502.2 million related to our Northern Oklahoma and legacy shallow Northwest Pennsylvania assets. Second quarter 2014 includes a gain of $280.1 million from the Conger Exchange (in thousands, except per share data):

	2015
	March			June			September			December			Total
Revenues and other income:
Natural gas, NGLs and oil sales	$	325,483		$	258,053		$	252,065		$	254,043		$	1,089,644
Derivative fair value income (loss)		122,839			(34,791	)		202,004			126,312			416,364
Brokered natural gas, marketing and other		14,485			21,339			25,864			30,372			92,060
Total revenue and other income		462,807			244,601			479,933			410,727			1,598,068
Costs and expenses:
Direct operating		37,137			34,780			35,058			29,388			136,363
Transportation, gathering and compression		89,426			95,198			99,634			112,481			396,739
Production and ad valorem taxes		9,928			9,242			7,336			7,354			33,860
Brokered natural gas and marketing		21,562			27,031			32,331			34,942			115,866
Exploration		7,886			5,025			4,235			4,260			21,406
Abandonment and impairment of unproved properties		11,491			12,330			12,366			11,432			47,619
General and administrative		48,329			55,964			46,178			43,544			194,015
Termination costs		5,950			417			(77	)		8,780			15,070
Deferred compensation plan		(5,624	)		(7,282	)		(43,705	)		(21,016	)		(77,627	)
Interest		39,207			43,479			42,904			40,849			166,439
Loss on early extinguishment of debt		—			—			22,495			—			22,495
Depletion, depreciation and amortization		147,290			151,895			153,993			127,977			581,155
Impairment of proved properties and other		—			—			502,233			87,941			590,174
Loss (gain) on sale of assets		175			(2,909	)		681			408,909			406,856
Total costs and expenses		412,757			425,170			915,662			896,841			2,650,430

Income (loss) before income taxes		50,050			(180,569	)		(435,729	)		(486,114	)		(1,052,362	)
Income tax expense (benefit):
Current		—			—			—			29			29
Deferred		22,366			(61,975	)		(134,781	)		(164,316	)		(338,706	)
		22,366			(61,975	)		(134,781	)		(164,287	)		(338,677	)
Net income (loss)	$	27,684		$	(118,594	)	$	(300,948	)	$	(321,827	)	$	(713,685	)
Net income (loss) per common share:
Basic	$	0.16		$	(0.71	)	$	(1.81	)	$	(1.93	)	$	(4.29	)
Diluted	$	0.16		$	(0.71	)	$	(1.81	)	$	(1.93	)	$	(4.29	)

	2014
	March			June			September			December			Total
Revenues and other income:
Natural gas, NGLs and oil sales	$	572,017		$	477,517		$	446,067		$	416,388		$	1,911,989
Derivative fair value (loss) income		(146,850	)		(24,109	)		142,057			412,422			383,520
Brokered natural gas, marketing and other		32,528			30,052			28,324			39,644			130,548
Total revenue and other income		457,695			483,460			616,448			868,454			2,426,057
Costs and expenses:
Direct operating		39,795			34,935			37,792			37,961			150,483
Transportation, gathering and compression		74,161			76,809			84,777			89,542			325,289
Production and ad valorem taxes		11,678			10,844			10,110			11,923			44,555
Brokered natural gas and marketing		34,129			34,775			28,706			32,370			129,980
Exploration		14,846			13,621			11,443			23,638			63,548
Abandonment and impairment of unproved properties		9,995			9,332			13,444			14,308			47,079
General and administrative		49,212			56,888			54,963			52,363			213,426
Termination costs		—			—			—			8,371			8,371
Deferred compensation plan		(2,035	)		10,519			(46,198	)		(36,836	)		(74,550	)
Interest		45,401			45,488			39,188			38,900			168,977
Loss on early extinguishment of debt		—			24,596			—			—			24,596
Depletion, depreciation and amortization		128,682			133,361			142,450			146,539			551,032
Impairment of proved properties and other		—			24,991			—			3,033			28,024
Loss (gain) on sale of assets		353			(282,064	)		(167	)		(3,760	)		(285,638	)
Total costs and expenses		406,217			194,095			376,508			418,352			1,395,172
Income before income taxes		51,478			289,365			239,940			450,102			1,030,885
Income tax expense (benefit):
Current		6			(1	)		—			(4	)		1
Deferred		18,951			117,977			93,522			166,052			396,502
		18,957			117,976			93,522			166,048			396,503
Net income	$	32,521		$	171,389		$	146,418		$	284,054		$	634,382
Net income per common share:
Basic	$	0.20		$	1.04		$	0.87		$	1.68		$	3.81
Diluted	$	0.20		$	1.04		$	0.86		$	1.68		$	3.79