CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Revenues:
Oil, natural gas, and natural gas liquids sales	$ 62,053	$ 118,028	$ 186,616	$ 352,856
Interest and other	2	166	1,068	326
Total revenues	62,055	118,194	187,684	353,182
Costs, expenses, and other:
Lease operating expenses	14,449	19,245	43,254	59,616
Production and property taxes	1,266	4,667	7,231	11,912
Transportation and processing costs	2,228	2,790	7,122	9,168
General and administrative	5,951	9,765	22,451	42,893
Depreciation, depletion, and amortization	20,921	43,973	62,639	136,320
Ceiling test write-down of oil and natural gas properties	127,445	0	204,621	0
Interest expense	15,882	29,519	47,631	95,039
Realized and unrealized (gains) losses on derivative instruments, net	(24,139)	5,533	353	(497)
Other, net	5,010	1,075	4,356	31,488
Total costs, expenses, and other	169,013	116,567	399,658	385,939
Earnings (loss) before income taxes	(106,958)	1,627	(211,974)	(32,757)
Income tax benefit	(1,113)	(587)	(2,405)	(462)
Net earnings (loss)	$ (105,845)	$ 2,214	$ (209,569)	$ (32,295)
Basic earnings (loss) per common share (in dollars per share)	$ (0.90)	$ 0.02	$ (1.79)	$ (0.28)
Diluted earnings (loss) per common share (in dollars per share)	$ (0.90)	$ 0.02	$ (1.79)	$ (0.28)