Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Revenues:
Oil and gas sales	$ 112,451	$ 90,682	$ 200,489	$ 196,771
Operating expenses:
Production taxes	1,363	4,806	2,089	6,481
Gathering and transportation	6,611	3,679	12,239	8,207
Lease operating	12,437	13,988	23,985	28,148
Exploration	82	99	9,619	1,268
Depreciation, depletion and amortization	74,689	57,398	135,014	116,807
Impairment of oil and gas properties		28		187
(Gain) loss on sale of assets	(26)	797	83	797
General and administrative, net	8,917	9,764	17,345	19,565
Total operating expenses	104,073	90,559	200,374	181,460
Operating income	8,378	123	115	15,311
Other income (expenses):
Interest income		119		258
Other income	83	25	393	45
Interest expense	(10,410)	(7,599)	(20,694)	(15,443)
Gain on sale of marketable securities	8,480	5,692	29,729	5,692
Total other income (expenses)	(1,847)	(1,763)	9,428	(9,448)
Income (loss) before income taxes	6,531	(1,640)	9,543	5,863
Benefit from (provision for) income taxes	(2,582)	21	(3,190)	(140)
Net Income (loss)	$ 3,949	$ (1,619)	$ 6,353	$ 5,723
Net income (loss) per share:
Basic	$ 0.08	$ (0.04)	$ 0.13	$ 0.12
Diluted	$ 0.08	$ (0.04)	$ 0.13	$ 0.12
Weighted average shares outstanding:
Basic	45,992	45,579	45,983	45,494
Diluted	45,992	45,579	45,983	45,571