Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenues
Total revenues	$ 402,039	$ 271,059	$ 1,150,558	$ 825,209
Operating expenses
Lease operating expenses	29,307	29,353	98,888	108,730
Gathering, processing and transportation expenses	16,400	20,328	52,596	73,557
Production taxes	18,445	13,039	50,933	39,129
Depreciation, depletion and amortization	33,623	36,000	112,581	272,885
Exploration expenses	263	725	1,936	3,061
Rig termination	0	1,017	0	1,279
Impairment	0	2,578	5	4,828,575
General and administrative expenses	19,514	49,251	60,461	117,868
Litigation settlement	0	22,750	0	22,750
Total operating expenses	203,854	234,008	649,033	5,672,089
Gain on sale of properties	5,405	1,473	228,473	11,652
Operating income (loss)	203,590	38,524	729,998	(4,835,228)
Other income (expense)
Net gain (loss) on derivative instruments	(101,790)	(5,071)	(550,342)	243,064
Interest expense, net of capitalized interest	(18,153)	(37,389)	(49,421)	(177,534)
Gain (loss) on extinguishment of debt	0	(20)	0	83,867
Reorganization items, net	0	(49,758)	0	(49,758)
Other income (expense)	(315)	1,473	(859)	2,373
Total other income (expense), net	(120,258)	(90,765)	(600,622)	102,012
Income (loss) before income taxes	83,332	(52,241)	129,376	(4,733,216)
Income tax benefit	0	5,144	0	262,495
Net income (loss) including non-controlling interests	83,332	(47,097)	129,376	(4,470,721)
Less: Net income (loss) attributable to non-controlling interests	11,382	8,602	27,654	(11,218)
Net income (loss) attributable to Oasis	$ 71,950	$ (55,699)	$ 101,722	$ (4,459,503)
Earnings (loss) attributable to Oasis per share:
Basic (in dollars per share)	$ 3.63	$ (0.17)	$ 5.11	$ (14.05)
Diluted (in dollars per share)	$ 3.46	$ (0.17)	$ 4.96	$ (14.05)
Weighted average shares outstanding:
Basic (in shares)	19,812	318,287	19,905	317,365
Diluted (in shares)	20,786	318,287	20,508	317,365
Oil and Gas Services
Revenues
Total revenues	$ 281,636	$ 179,577	$ 782,324	$ 512,535
Purchased Oil and Gas
Revenues
Total revenues	53,570	44,194	183,885	167,824
Operating expenses
Expenses	53,880	47,549	187,745	165,932
Midstream Total
Revenues
Total revenues	66,712	46,979	183,807	138,164
Operating expenses
Expenses	32,396	11,110	83,841	32,355
Other Services
Revenues
Total revenues	121	309	542	6,686
Operating expenses
Expenses	$ 26	$ 308	$ 47	$ 5,968