CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues
Sales and other operating revenues	$ 509,613	$ 411,217	$ 1,054,271	$ 840,311
Gain (loss) on sale of assets	(1,334)	3,809	130,648	3,831
Interest and other income (loss)	(33,782)	22,436	(45,803)	23,615
Total revenues	474,497	437,462	1,139,116	867,757
Costs and expenses
Lease operating expenses	111,179	156,530	233,321	315,633
Severance and ad valorem taxes	10,742	13,439	21,955	26,076
Exploration expenses	20,201	37,128	48,864	64,044
Selling and general expenses	57,332	67,113	111,587	140,620
Depreciation, depletion and amortization	234,992	255,239	471,146	541,388
Accretion of asset retirement obligations	10,428	12,346	20,984	24,471
Impairment of assets				95,088
Interest expense	46,261	35,058	91,951	67,119
Interest capitalized	(1,116)	(608)	(2,209)	(2,449)
Other expense (benefit)	6,377	(7,516)	8,534	(7,932)
Total costs and expenses	496,396	568,729	1,006,133	1,264,058
Income (loss) from continuing operations before income taxes	(21,899)	(131,267)	132,983	(396,301)
Income tax expense (benefit)	(4,545)	(134,172)	92,842	(199,721)
Income (loss) from continuing operations	(17,354)	2,905	40,141	(196,580)
Income (loss) from discontinued operations, net of income taxes	(217)	25	752	708
NET INCOME (LOSS)	$ (17,571)	$ 2,930	$ 40,893	$ (195,872)
INCOME (LOSS) PER COMMON SHARE - BASIC
Continuing operations	$ (0.10)	$ 0.02	$ 0.23	$ (1.14)
Discontinued operations			0.01
Net income (loss)	(0.10)	0.02	0.24	(1.14)
INCOME (LOSS) PER COMMON SHARE - DILUTED
Continuing operations	(0.10)	0.02	0.23	(1.14)
Discontinued operations			0.01
Net income (loss)	(0.10)	0.02	0.24	(1.14)
Cash dividends per Common share	$ 0.25	$ 0.35	$ 0.50	$ 0.70
Average Common shares outstanding
Basic	172,557,978	172,196,914	172,482,223	172,149,791
Diluted	172,557,978	172,799,827	173,016,664	172,149,791