Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenues:
Oil and gas sales	$ 68,281	$ 158,487	$ 135,639	$ 307,544
Price-risk management and other, net	(2,112)	(2,493)	(1,133)	(7,370)
Total Revenues	66,169	155,994	134,506	300,174
Costs and Expenses:
General and administrative, net	10,290	12,058	22,846	22,584
Depreciation, depletion, and amortization	42,088	73,090	102,786	135,741
Accretion of asset retirement obligation	1,381	1,415	2,746	2,801
Lease operating cost	17,164	23,572	36,198	48,539
Transportation and gas processing	5,086	6,013	10,409	11,305
Severance and other taxes	4,424	9,436	9,556	18,638
Interest expense, net	18,741	18,649	36,969	37,098
Write-down of oil and gas properties	260,504	0	763,073	0
Total Costs and Expenses	359,678	144,233	984,583	276,706
Income Before Income Taxes	(293,509)	11,761	(850,077)	23,468
Provision for Income Taxes	(642)	4,934	(80,133)	11,199
Net Income	$ (292,867)	$ 6,827	$ (769,944)	$ 12,269
Per Share Amounts-
Earnings Per Share (Basic)	$ (6.58)	$ 0.16	$ (17.35)	$ 0.28
Earnings Per Share (Diluted)	$ (6.58)	$ 0.15	$ (17.35)	$ 0.28
Weighted Average Shares Outstanding - Basic	44,516	43,826	44,374	43,727
Weighted Average Shares Outstanding - Diluted	44,516	44,312	44,374	44,215