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Equity-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Summarized Information Related to Restricted Stock and Restricted Units

The following table summarizes information related to restricted stock held by the Company’s employees and directors for the periods presented:

	Shares			Weighted Average Grant Date Fair Value per Share
Non-vested shares outstanding December 31, 2016	3,980,773			$	9.48
Granted	1,639,560			15.03
Vested	(1,676,735	)		11.81
Forfeited	(201,700	)		10.99
Non-vested shares outstanding December 31, 2017	3,741,898			$	10.78

Summarized Information Related to Performance Share Units

The following table summarizes information related to PSUs held by the Company’s officers for the periods presented:

	Units			Weighted Average Grant Date Fair Value per Unit
Non-vested PSUs at December 31, 2016	1,387,619			$	9.52
Granted	509,800			16.89
Vested	—			—
Forfeited	(24,709	)		42.01
Non-vested PSUs at December 31, 2017	1,872,710			$	11.10

Summary of Assumptions

The following assumptions were used for the Monte Carlo model to determine the grant date fair value and associated equity-based compensation expense of the PSUs granted during the periods presented:

	2017			2016			2015
Forecast period (years)	2 - 4			4			4
Risk-free interest rate	1.18% - 1.66%			1.25	%		0.99	%
Oasis stock price volatility	17.16	%		59.38	%		50.11	%

Summarized Information Related to Phantom Units

The following table summarizes information related to Phantom Units held by certain employees of Oasis:

	Phantom Units			Weighted Average Grant Date Fair Value per Unit
Non-vested units outstanding December 31, 2016	—			$	—
Granted	101,500			16.40
Vested	—			—
Forfeited	(2,400	)		16.40
Non-vested units outstanding December 31, 2017	99,100			$	16.40

Summarized Information Related to Restricted Units

The following table summarizes information related to restricted units held by certain directors of OMP:

	Restricted Units			Weighted Average Grant Date Fair Value per Unit
Non-vested units outstanding December 31, 2016	—			$	—
Granted	11,766			17.00
Vested	—			—
Forfeited	—			—
Non-vested units outstanding December 31, 2017	11,766			$	17.00

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Tabular disclosure of the changes in outstanding nonvested performance-based units.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
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-Name Accounting Standards Codification
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-SubTopic 10
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Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

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-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
-Paragraph 2
-Subparagraph (f)(2)
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