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Business Combination (Details)
$ in Thousands
9 Months Ended
Feb. 17, 2017
USD ($)
well
Sep. 30, 2017
USD ($)
Sep. 30, 2016
USD ($)
Business Acquisition [Line Items]      
Contributions related to formation of Joint Venture   $ 171,500 $ 0
Corporate Joint Venture [Member] | San Mateo Midstream [Member]      
Business Acquisition [Line Items]      
Ownership percentage 51.00% 51.00%  
Deferred performance incentives $ 73,500    
Deferred performance incentives term 5 years    
Cash contributed to joint venture $ 5,100    
Additional cost commitment $ 140,000    
Corporate Joint Venture [Member] | San Mateo Midstream [Member] | Rustler Breaks Asset Area [Member]      
Business Acquisition [Line Items]      
Number of wells contributed to joint venture | well 1    
Term of contractual obligation 15 years    
Corporate Joint Venture [Member] | San Mateo Midstream [Member] | Wolf Asset Area [Member]      
Business Acquisition [Line Items]      
Number of wells contributed to joint venture | well 3    
Corporate Joint Venture [Member] | San Mateo Midstream [Member] | Rustler Breaks and Wolf Asset Area [Member]      
Business Acquisition [Line Items]      
Term of contractual obligation 15 years    
Five Point [Member] | Corporate Joint Venture [Member] | San Mateo Midstream [Member]      
Business Acquisition [Line Items]      
Ownership percentage 49.00%    
Payments to acquire interest in joint venture $ 176,400    
Contributions related to formation of Joint Venture $ 171,500