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Equity-Based Compensation - Additional Information (Details)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended
Oct. 19, 2017
Sep. 25, 2017
$ / shares
Sep. 30, 2017
shares
Jun. 30, 2018
USD ($)
shares
Jun. 30, 2017
USD ($)
Jun. 30, 2018
USD ($)
day
$ / shares
shares
Jun. 30, 2017
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Equity-based compensation expenses           $ 14,130 $ 13,823
Restricted Stock [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting period           3 years  
Stock granted (in shares) | shares           2,921,430  
Granted, weighted average grant date fair value per unit (in usd per share) | $ / shares           $ 9.61  
Equity-based compensation expenses       $ 4,900 $ 4,900 $ 9,600 10,300
Performance Share Unit Awards [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Stock granted (in shares) | shares           854,400  
Granted, weighted average grant date fair value per unit (in usd per share) | $ / shares           $ 12.71  
Equity-based compensation expenses       $ 2,300 $ 2,200 $ 4,200 $ 3,500
Right to received shares of common stock (in shares) | shares       1   1  
Number of trading days | day           30  
Performance Share Unit Awards [Member] | Minimum [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
PSU granted percentage of earnings (as a percent)           0.00%  
Performance Share Unit Awards [Member] | Maximum [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
PSU granted percentage of earnings (as a percent)           200.00%  
Oasis Midstream Partners, LP [Member] | Phantom Units [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Equity-based compensation expenses       $ 100   $ 200  
Vesting period 3 years            
OMP General Partner LLC [Member] | Restricted Stock Units (RSUs) [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Stock granted (in shares) | shares     12,200        
Granted, weighted average grant date fair value per unit (in usd per share) | $ / shares   $ 16.50          
Equity-based compensation expenses       $ 100   $ 200  
Vesting period   1 year