Quarterly report pursuant to Section 13 or 15(d)

Real Estate Activity (Details)

v3.20.2
Real Estate Activity (Details)
$ in Millions
 6 Months Ended
Jun. 30, 2020
USD ($)
a
$ / a
Jun. 30, 2019
USD ($)
a
$ / a
Real Estate Properties [Line Items]    
Additions | $ $ 3.9 $ 74.4
Average purchase price (in dollars per acre) | $ / a 5,134 3,434
Loving, Pecos and Reeves Counties    
Real Estate Properties [Line Items]    
Area of real estate property, sold (acre) | a 527  
Proceeds from sale of real estate | $ $ 4.4  
Average sale price (in dollars per acre) | $ / a 8,305  
Land basis | $ $ 2.7  
Culberson, Glasscock, Hudspeth, Loving, Midland and Reeves Counties    
Real Estate Properties [Line Items]    
Area of real estate property, sold (acre) | a   21,909
Proceeds from sale of real estate | $   $ 108.4
Average sale price (in dollars per acre) | $ / a   4,948
Culberson and Reeves counties    
Real Estate Properties [Line Items]    
Additions (acre) | a 756  
Culberson, Glasscock, Loving and Reeves Counties    
Real Estate Properties [Line Items]    
Additions (acre) | a   21,671