Quarterly report pursuant to Section 13 or 15(d)

Real Estate Activity (Details)

v3.19.3
Real Estate Activity (Details)
$ in Millions
1 Months Ended 9 Months Ended
Jan. 31, 2019
USD ($)
Sep. 30, 2019
USD ($)
a
$ / a
Sep. 30, 2018
USD ($)
a
$ / a
Real Estate Properties [Line Items]      
Area of real estate property, sold (acre)   21,986 167
Proceeds from sale of real estate | $ $ 100.0 $ 113.0 $ 4.3
Average sale price (in dollars per acre) | $ / a   5,141 25,734
Additions | $   $ 74.4 $ 2.7
Average purchase price (in dollars per acre) | $ / a   3,434 924
Loving county      
Real Estate Properties [Line Items]      
Area of real estate property, sold (acre)   13,180 40
Culberson county      
Real Estate Properties [Line Items]      
Area of real estate property, sold (acre)   5,675 80
Hudspeth county      
Real Estate Properties [Line Items]      
Area of real estate property, sold (acre)   1,651  
Reeves county      
Real Estate Properties [Line Items]      
Area of real estate property, sold (acre)   843 32
El paso county      
Real Estate Properties [Line Items]      
Area of real estate property, sold (acre)     15
Midland County      
Real Estate Properties [Line Items]      
Area of real estate property, sold (acre)   636  
Glasscock County      
Real Estate Properties [Line Items]      
Area of real estate property, sold (acre)   1  
Culberson, Glasscock, Loving and Reeves Counties      
Real Estate Properties [Line Items]      
Additions (acre)   21,671  
Mitchell and Uptown County      
Real Estate Properties [Line Items]      
Additions (acre)     2,884