Summarized Quarterly Financial Information (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2015

Summarized Quarterly Financial Information Disclosure [Abstract]

Schedule Of Quarterly Financial Information Table Text Block

		2015
		1st Quarter		2nd Quarter		3rd Quarter		4th Quarter		Total
Revenues from continuing operations	$	219,309	$	207,998	$	222,503	$	189,301	$	839,111
Gain (loss) on commodity derivatives		36,865		(3,646)		9,390		2		42,611
Expenses from continuing operations		189,347		188,483		195,339		207,452		780,621
Ceiling test and other impairments		-		-		-		3,144,899		3,144,899
Interest expense		42,668		42,619		43,137		43,494		171,918
Other income (expense), net		(992)		1,827		2,354		903		4,092
Income before income tax provision (benefit)		23,167		(24,923)		(4,229)		(3,205,639)		(3,211,624)
Income tax provision (benefit)		(2,022)		(250)		(1,133)		(999)		(4,404)
Net income (loss)	$	25,189	$	(24,673)	$	(3,096)	$	(3,204,640)	$	(3,207,220)
Net income (loss) per common share - basic	$	0.16	$	(0.16)	$	(0.02)	$	(20.91)	$	(20.94)
Net income (loss) per common share - fully diluted	$	0.16	$	(0.16)	$	(0.02)	$	(20.91)	$	(20.94)
		2014
		1st Quarter		2nd Quarter		3rd Quarter		4th Quarter		Total
Revenues from continuing operations	$	326,299	$	296,063	$	288,608	$	319,050	$	1,230,020
(Loss) gain on commodity derivatives		(45,273)		(15,102)		32,052		110,725		82,402
Expenses from continuing operations		154,829		150,850		169,669		195,083		670,431
Interest expense		27,068		27,294		29,599		42,196		126,157
Gain on sale of property		-		-		-		8,022		8,022
Other income (expense), net		2,590		2,688		2,582		5,311		13,171
Income before income tax provision (benefit)		101,719		105,505		123,974		205,829		537,027
Income tax provision (benefit)		4		(544)		(1,383)		(3,901)		(5,824)
Net income	$	101,715	$	106,049	$	125,357	$	209,730	$	542,851
Net income per common share - basic	$	0.66	$	0.69	$	0.82	$	1.37	$	3.54
Net income per common share - fully diluted	$	0.66	$	0.68	$	0.81	$	1.36	$	3.51