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Condensed Consolidating Financial Information - Schedule of Condensed Consolidating Statement of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues
Total revenues	$ 501,337	$ 254,091	$ 922,553	$ 539,207
Operating expenses
Lease operating expenses	44,141	44,665	88,922	88,537
Marketing, transportation and gathering expenses	22,833	12,039	43,846	22,990
Production taxes	34,026	18,971	65,026	39,270
Depreciation, depletion and amortization	153,570	125,291	302,835	251,957
Exploration expenses	617	1,667	1,386	3,156
Impairment	384,135	3,200	384,228	5,882
General and administrative expenses	28,230	22,626	56,170	45,802
Total operating expenses	745,965	248,712	1,054,196	513,736
Gain on sale of properties	1,954	0	1,954	0
Operating income (loss)	(242,674)	5,379	(129,689)	25,471
Other income (expense)
Equity In Earnings In Subsidiaries	0	0	0	0
Net gain (loss) on derivative instruments	(120,285)	50,532	(191,401)	106,607
Interest expense, net of capitalized interest	(40,910)	(36,838)	(78,056)	(73,159)
Loss on extinguishment of debt	(13,651)	0	(13,651)	0
Other income (expense)	218	(166)	35	(150)
Total other income (expense)	(174,628)	13,528	(283,073)	33,298
Income (loss) before income taxes	(417,302)	18,907	(412,762)	58,769
Income tax benefit (expense)	101,001	(2,339)	100,173	(18,376)
Net income (loss) including non-controlling interests	(316,301)	16,568	(312,589)	40,393
Less: Net income attributable to non-controlling interests	3,903	0	7,025	0
Net income (loss) attributable to Oasis	(320,204)	16,568	(319,614)	40,393
Intercompany Eliminations [Member]
Revenues
Total revenues	(38,133)	0	(72,782)	0
Operating expenses
Lease operating expenses	(13,474)	0	(24,392)	0
Marketing, transportation and gathering expenses	(5,820)	0	(11,479)	0
Production taxes	0	0	0	0
Depreciation, depletion and amortization	(3,643)	0	(6,969)	0
Exploration expenses	0	0	0	0
Impairment	0	0	0	0
General and administrative expenses	(3,117)	0	(6,237)	0
Total operating expenses	(35,480)	0	(68,380)	0
Gain on sale of properties	0		0
Operating income (loss)	(2,653)	0	(4,402)	0
Other income (expense)
Equity In Earnings In Subsidiaries	240,529	(38,875)	176,836	(87,978)
Net gain (loss) on derivative instruments	0	0	0	0
Interest expense, net of capitalized interest	0	0	0	0
Loss on extinguishment of debt	0		0
Other income (expense)	0	0	0	0
Total other income (expense)	240,529	(38,875)	176,836	(87,978)
Income (loss) before income taxes	237,876	(38,875)	172,434	(87,978)
Income tax benefit (expense)	0	0	0	0
Net income (loss) including non-controlling interests	237,876		172,434	(87,978)
Less: Net income attributable to non-controlling interests	(25,042)		(46,616)
Net income (loss) attributable to Oasis	262,918	(38,875)	219,050	(87,978)
Parent/Issuer [Member]
Revenues
Total revenues	0	0	0	0
Operating expenses
Lease operating expenses	0	0	0	0
Marketing, transportation and gathering expenses	0	0	0	0
Production taxes	0	0	0	0
Depreciation, depletion and amortization	0	0	0	0
Exploration expenses	0	0	0	0
Impairment	0	0	0	0
General and administrative expenses	7,496	7,534	14,728	14,599
Total operating expenses	7,496	7,534	14,728	14,599
Gain on sale of properties	0		0
Operating income (loss)	(7,496)	(7,534)	(14,728)	(14,599)
Other income (expense)
Equity In Earnings In Subsidiaries	(278,014)	38,875	(245,850)	87,978
Net gain (loss) on derivative instruments	0	0	0	0
Interest expense, net of capitalized interest	(33,135)	(33,006)	(65,581)	(65,857)
Loss on extinguishment of debt	(13,651)		(13,651)
Other income (expense)	0	0	0	0
Total other income (expense)	(324,800)	5,869	(325,082)	22,121
Income (loss) before income taxes	(332,296)	(1,665)	(339,810)	7,522
Income tax benefit (expense)	12,092	18,233	20,196	32,871
Net income (loss) including non-controlling interests	(320,204)		(319,614)	40,393
Less: Net income attributable to non-controlling interests	0		0
Net income (loss) attributable to Oasis	(320,204)	16,568	(319,614)	40,393
Combined Guarantor Subsidiaries [Member]
Revenues
Total revenues	472,912	254,091	867,356	539,207
Operating expenses
Lease operating expenses	57,615	44,665	113,314	88,537
Marketing, transportation and gathering expenses	28,653	12,039	55,325	22,990
Production taxes	34,026	18,971	65,026	39,270
Depreciation, depletion and amortization	150,554	125,291	296,781	251,957
Exploration expenses	617	1,667	1,386	3,156
Impairment	384,135	3,200	384,228	5,882
General and administrative expenses	17,954	15,092	35,632	31,203
Total operating expenses	745,059	241,178	1,049,328	499,137
Gain on sale of properties	1,954		1,954
Operating income (loss)	(270,193)	12,913	(180,018)	40,070
Other income (expense)
Equity In Earnings In Subsidiaries	37,485	0	69,014	0
Net gain (loss) on derivative instruments	(120,285)	50,532	(191,401)	106,607
Interest expense, net of capitalized interest	(7,592)	(3,832)	(12,030)	(7,302)
Loss on extinguishment of debt	0		0
Other income (expense)	218	(166)	35	(150)
Total other income (expense)	(90,174)	46,534	(134,382)	99,155
Income (loss) before income taxes	(360,367)	59,447	(314,400)	139,225
Income tax benefit (expense)	88,909	(20,572)	79,977	(51,247)
Net income (loss) including non-controlling interests	(271,458)		(234,423)	87,978
Less: Net income attributable to non-controlling interests	3,903		7,025
Net income (loss) attributable to Oasis	(275,361)	38,875	(241,448)	87,978
Non-Guarantor Subsidiaries [Member]
Revenues
Total revenues	66,558		127,979
Operating expenses
Lease operating expenses	0		0
Marketing, transportation and gathering expenses	0		0
Production taxes	0		0
Depreciation, depletion and amortization	6,659		13,023
Exploration expenses	0		0
Impairment	0		0
General and administrative expenses	5,897		12,047
Total operating expenses	28,890		58,520
Gain on sale of properties	0		0
Operating income (loss)	37,668		69,459
Other income (expense)
Equity In Earnings In Subsidiaries	0		0
Net gain (loss) on derivative instruments	0		0
Interest expense, net of capitalized interest	(183)		(445)
Loss on extinguishment of debt	0		0
Other income (expense)	0		0
Total other income (expense)	(183)		(445)
Income (loss) before income taxes	37,485		69,014
Income tax benefit (expense)	0		0
Net income (loss) including non-controlling interests	37,485		69,014
Less: Net income attributable to non-controlling interests	25,042		46,616
Net income (loss) attributable to Oasis	12,443		22,398
Oil and Gas [Member]
Revenues
Total revenues	395,921	218,633	759,592	455,885
Oil and Gas [Member] | Intercompany Eliminations [Member]
Revenues
Total revenues	0	0	0	0
Oil and Gas [Member] | Parent/Issuer [Member]
Revenues
Total revenues	0	0	0	0
Oil and Gas [Member] | Combined Guarantor Subsidiaries [Member]
Revenues
Total revenues	395,921	218,633	759,592	455,885
Oil and Gas [Member] | Non-Guarantor Subsidiaries [Member]
Revenues
Total revenues	0		0
Purchased Oil and Gas Sales [Member]
Revenues
Total revenues	57,578	8,091	75,615	35,722
Operating expenses
Expenses	57,165	7,980	75,163	35,982
Purchased Oil and Gas Sales [Member] | Intercompany Eliminations [Member]
Revenues
Total revenues	0	0	0	0
Operating expenses
Expenses	0	0	0	0
Purchased Oil and Gas Sales [Member] | Parent/Issuer [Member]
Revenues
Total revenues	0	0	0	0
Operating expenses
Expenses	0	0	0	0
Purchased Oil and Gas Sales [Member] | Combined Guarantor Subsidiaries [Member]
Revenues
Total revenues	57,578	8,091	75,615	35,722
Operating expenses
Expenses	57,165	7,980	75,163	35,982
Purchased Oil and Gas Sales [Member] | Non-Guarantor Subsidiaries [Member]
Revenues
Total revenues	0		0
Operating expenses
Expenses	0		0
Midstream Services [Member]
Revenues
Total revenues	29,342	15,566	57,264	30,172
Operating expenses
Expenses	7,688	3,263	15,673	6,590
Midstream Services [Member] | Intercompany Eliminations [Member]
Revenues
Total revenues	(38,133)	0	(72,782)	0
Operating expenses
Expenses	(9,426)	0	(19,303)	0
Midstream Services [Member] | Parent/Issuer [Member]
Revenues
Total revenues	0	0	0	0
Operating expenses
Expenses	0	0	0	0
Midstream Services [Member] | Combined Guarantor Subsidiaries [Member]
Revenues
Total revenues	917	15,566	2,067	30,172
Operating expenses
Expenses	780	3,263	1,526	6,590
Midstream Services [Member] | Non-Guarantor Subsidiaries [Member]
Revenues
Total revenues	66,558		127,979
Operating expenses
Expenses	16,334		33,450
Well Services [Member]
Revenues
Total revenues	18,496	11,801	30,082	17,428
Operating expenses
Expenses	13,560	9,010	20,947	13,570
Well Services [Member] | Intercompany Eliminations [Member]
Revenues
Total revenues	0	0	0	0
Operating expenses
Expenses	0	0	0	0
Well Services [Member] | Parent/Issuer [Member]
Revenues
Total revenues	0	0	0	0
Operating expenses
Expenses	0	0	0	0
Well Services [Member] | Combined Guarantor Subsidiaries [Member]
Revenues
Total revenues	18,496	11,801	30,082	17,428
Operating expenses
Expenses	13,560	$ 9,010	20,947	$ 13,570
Well Services [Member] | Non-Guarantor Subsidiaries [Member]
Revenues
Total revenues	0		0
Operating expenses
Expenses	$ 0		$ 0

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