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Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

Accounting Policies [Abstract]

Impact of Revision of Prior Period Financial Statements on Consolidated Financial Statements

For the year ended December 31, 2017, the revision did not impact the Company’s cash flows from operations, and the impacts to the Company's Consolidated Statement of Operations and Consolidated Balance Sheet were as follows:

	Year Ended December 31, 2017
	As Reported				Revision				As Revised
	(In thousands, except share data)
Oil and gas revenues	$	1,034,892			$	(258	)		$	1,034,634
Purchased oil and gas sales	87,989				45,553				133,542
Total revenues	1,248,424				45,295				1,293,719
Purchased oil and gas expenses	89,320				45,295				134,615
Total operating expenses	1,106,230				45,295				1,151,525
Net income attributable to Oasis	123,796				—				123,796
Earnings attributable to Oasis per share:
Basic	$	0.53			$	—			$	0.53
Diluted	$	0.52			$	—			$	0.52
Accounts receivable, net	$	363,580			$	7,799			$	371,379
Total current assets	407,835				7,799				415,634
Total assets	6,615,130				7,799				6,622,929
Accrued liabilities	236,480				7,799				244,279
Total current liabilities	623,480				7,799				631,279
Total liabilities	3,101,551				7,799				3,109,350
Oasis share of stockholders’ equity	3,375,691				—				3,375,691

Net Changes in Capitalized Exploratory Well Costs

Net changes in capitalized exploratory well costs are reflected in the following table for the periods presented:

	December 31,
	2018				2017				2016
	(In thousands)
Beginning of period	$	—			$	2,097			$	2,097
Exploratory well cost additions (pending determination of proved reserves)	26,497				10				—
Exploratory well cost reclassifications (successful determination of proved reserves)	(22,040		)		(571		)		—
Exploratory well dry hole costs (unsuccessful in adding proved reserves)	—				(1,536		)		—
End of period	$	4,457			$	—			$	2,097

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Tabular disclosure of the change in capitalized exploratory costs during the period.

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Tabular disclosure of prior period adjustments to previously issued financial statements including (1) the effect of the correction on each financial statement line item and any per-share amounts affected for each prior period presented (2) the cumulative effect of the change on retained earnings or other appropriate components of equity or net assets in the statement of financial position, as of the beginning of the earliest period presented, and (3) the effect of the prior period adjustments (both gross and net of applicable income tax) on the net income of each prior period presented in the entity's annual report for the year in which the adjustments are made.

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