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Condensed Consolidating Financial Statements - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Condensed Financial Statements, Captions [Line Items]
Guarantor ownership interest (percent)	100.00%
Oasis share of stockholders’ equity	$ 3,636,138	$ 3,734,576
Investments in and advances to subsidiaries	0	0
Non-controlling interests	200,943	184,304
Equity in earnings of subsidiaries	0	0	$ 0
Less: Net income attributable to non-controlling interests	37,596	15,796	3,650
Distributions to non-controlling interests	21,270	14,114	0
Intercompany Eliminations
Condensed Financial Statements, Captions [Line Items]
Oasis share of stockholders’ equity	(5,180,627)	(5,145,385)
Investments in and advances to subsidiaries	(5,271,052)	(5,262,794)
Non-controlling interests	(111,315)	(128,511)
Equity in earnings of subsidiaries	(153,950)	(225,808)	(353,305)
Less: Net income attributable to non-controlling interests	(55,515)	(80,558)	(19,679)
Distributions to non-controlling interests	(74,501)	(114,789)
(overstated) / understated | Intercompany Eliminations
Condensed Financial Statements, Captions [Line Items]
Oasis share of stockholders’ equity		(163,600)
Investments in and advances to subsidiaries		20,700
Non-controlling interests		184,300
Equity in earnings of subsidiaries		24,900	5,600
Less: Net income attributable to non-controlling interests		15,800	3,700
Distributions to non-controlling interests		114,800
Parent/ Issuer
Condensed Financial Statements, Captions [Line Items]
Oasis share of stockholders’ equity	3,636,138	3,734,576
Investments in and advances to subsidiaries	4,888,257	4,900,528
Non-controlling interests	0	0
Equity in earnings of subsidiaries	(13,898)	103,586	323,953
Less: Net income attributable to non-controlling interests	0	0	0
Distributions to non-controlling interests	0	0
Parent/ Issuer | (overstated) / understated
Condensed Financial Statements, Captions [Line Items]
Oasis share of stockholders’ equity		(9,600)
Investments in and advances to subsidiaries		(9,600)
Combined Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Oasis share of stockholders’ equity	4,888,257	4,900,528
Investments in and advances to subsidiaries	382,795	362,266
Non-controlling interests	0	0
Equity in earnings of subsidiaries	167,848	122,222	29,352
Less: Net income attributable to non-controlling interests	0	0	0
Distributions to non-controlling interests	$ 0	0
Combined Guarantor Subsidiaries | (overstated) / understated
Condensed Financial Statements, Captions [Line Items]
Oasis share of stockholders’ equity		173,200
Investments in and advances to subsidiaries		(11,100)
Non-controlling interests		(184,300)
Equity in earnings of subsidiaries		(24,900)	(5,600)
Less: Net income attributable to non-controlling interests		(15,800)	$ (3,700)
Distributions to non-controlling interests		$ (114,800)

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