Earnings Per Limited Partner Unit (Tables)

12 Months Ended

Dec. 31, 2018

Earnings Per Share [Abstract]

Schedule of Earnings per Common and Subordinated Units

The following table presents the calculation of earnings per limited partner unit under the two-class method:

	Year ended December 31, 2018
	General Partner		Limited Partners
	IDRs		Common units		Subordinated units		Total
	(In thousands, except per unit data)
Net income attributable to Oasis Midstream Partners LP:
Distribution declared	$	112	$	26,001	$	23,134	$	49,247
Undistributed earnings attributable to Oasis Midstream Partners LP	—		415		393		808
Net income attributable to Oasis Midstream Partners LP	$	112	$	26,416	$	23,527	$	50,055
Weighted average limited partner units outstanding
Basic			14,504
Diluted			14,519
Net income attributable to Oasis Midstream Partners LP per limited partner unit
Basic			$	1.82
Diluted			1.82
Anti-dilutive restricted units			6

	Year ended December 31, 2017
	General Partner		Limited Partners
	IDRs		Common units		Subordinated units		Total
	(In thousands, except per unit data)
Net income attributable to Oasis Midstream Partners LP:
Distribution declared	$	—	$	5,498	$	5,493	$	10,991
Undistributed earnings attributable to Oasis Midstream Partners LP	—		321		326		647
Net income attributable to Oasis Midstream Partners LP	$	—	$	5,819	$	5,819	$	11,638
Weighted average limited partner units outstanding
Basic			13,566
Diluted			13,568
Net income attributable to Oasis Midstream Partners LP per limited partner unit
Basic			$	0.43
Diluted			0.43
Anti-dilutive restricted units			10