Quarterly report pursuant to Section 13 or 15(d)

Organization and Description of Business Segments (Details)

v3.19.2
Organization and Description of Business Segments (Details)
6 Months Ended
Jun. 30, 2019
a
segment
Organization, Consolidation and Presentation of Financial Statements [Line Items]  
Number of operating segments | segment 2
West Texas  
Organization, Consolidation and Presentation of Financial Statements [Line Items]  
Area of land (in acres) | a 900,000