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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Oil, natural gas and natural gas liquids sales:
Total oil, natural gas and natural gas liquids sales	$ 55,874	$ 55,307	$ 107,797	$ 104,407
Other	504	108	497	263
Total operating revenues	56,378	55,415	108,294	104,670
Production:
Lease operating	13,473	5,314	27,659	10,229
Workover and other	1,368	1,956	4,014	3,317
Taxes other than income	3,308	3,226	6,201	6,255
Gathering and other	11,041	5,956	25,910	12,378
Restructuring	654	27	11,925	128
General and administrative	12,519	14,255	17,127	29,465
Depletion, depreciation and accretion	40,425	16,096	70,400	32,087
Full cost ceiling impairment	664,383		939,622
(Gain) loss on sale of oil and natural gas properties		2,225		5,904
(Gain) loss on sale of Water Assets	2,897		3,782
Total operating expenses	750,068	49,055	1,106,640	99,763
Income (loss) from operations	(693,690)	6,360	(998,346)	4,907
Other income (expenses):
Net gain (loss) on derivative contracts	17,010	(12,100)	(47,789)	(6,197)
Interest expense and other	(14,470)	(10,534)	(27,059)	(17,582)
Total other income (expenses)	2,540	(22,634)	(74,848)	(23,779)
Income (loss) before income taxes	(691,150)	(16,274)	(1,073,194)	(18,872)
Income tax benefit (provision)	50,306		95,791
Net income (loss)	$ (640,844)	$ (16,274)	$ (977,403)	$ (18,872)
Net income (loss) per share of common stock:
Basic (in dollars per share)	$ (4.03)	$ (0.10)	$ (6.15)	$ (0.12)
Diluted (in dollars per share)	$ (4.03)	$ (0.10)	$ (6.15)	$ (0.12)
Weighted average common shares outstanding:
Basic (in shares)	159,050	157,943	158,801	155,925
Diluted (in shares)	159,050	157,943	158,801	155,925
Oil
Oil, natural gas and natural gas liquids sales:
Total oil, natural gas and natural gas liquids sales	$ 53,232	$ 48,756	$ 98,749	$ 91,825
Natural gas
Oil, natural gas and natural gas liquids sales:
Total oil, natural gas and natural gas liquids sales	(1,655)	1,560	(194)	3,879
Natural gas liquids
Oil, natural gas and natural gas liquids sales:
Total oil, natural gas and natural gas liquids sales	$ 4,297	$ 4,991	$ 9,242	$ 8,703

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