CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Revenues:
Oil sales	$ 111,071	$ 55,073	$ 201,384	$ 100,813
Natural gas sales	44,652	52,747	96,248	102,027
Gain on sale of oil and gas properties		81		81
Total revenues	155,723	107,901	297,632	202,921
Operating expenses:
Production taxes	6,467	3,883	12,068	6,004
Gathering and transportation	3,138	4,354	6,914	8,556
Lease operating	13,980	12,962	29,041	26,168
Exploration		9,754		12,347
Depreciation, depletion and amortization	94,539	85,244	183,413	170,211
Impairment of oil and gas properties	256	652	256	652
General and administrative, net	9,614	9,056	17,983	17,843
Total operating expenses	127,994	125,905	249,675	241,781
Operating income (loss)	27,729	(18,004)	47,957	(38,860)
Other income (expenses):
Gain on sale of marketable securities				7,877
Gain (loss) from derivative financial instruments	(9,850)	3,521	(14,796)	(2,926)
Other income	39	196	290	441
Interest expense	(14,767)	(19,240)	(28,447)	(36,818)
Total other income (expenses)	(24,578)	(15,523)	(42,953)	(31,426)
Income (loss) before income taxes	3,151	(33,527)	5,004	(70,286)
Benefit from (provision for) income taxes	(1,253)	11,996	(1,941)	24,238
Income (loss) from continuing operations	1,898	(21,531)	3,063	(46,048)
Income from discontinued operations, net of income taxes		151,236		148,609
Net income	$ 1,898	$ 129,705	$ 3,063	$ 102,561
Net income (loss) per share:
Income (loss) from continuing operations, Basic	$ 0.04	$ (0.45)	$ 0.06	$ (0.95)
Loss from discontinued operations, Basic		$ 3.13		$ 3.07
Net income (loss), Basic	$ 0.04	$ 2.68	$ 0.06	$ 2.12
Income (loss) from continuing operations, Diluted	$ 0.04	$ (0.45)	$ 0.06	$ (0.95)
Loss from discontinued operations, Diluted		$ 3.13		$ 3.07
Net income (loss), Diluted	$ 0.04	$ 2.68	$ 0.06	$ 2.12
Dividends per share	$ 0.125	$ 0.125	$ 0.250	$ 0.125
Weighted average shares outstanding:
Basic	46,651	46,754	46,616	46,742
Diluted	47,004	46,754	46,941	46,742