Quarterly report pursuant to Section 13 or 15(d)

Real Estate Activity Real Estate Activity - Sold (Details)

v3.10.0.1
Real Estate Activity Real Estate Activity - Sold (Details)
$ in Thousands
1 Months Ended 6 Months Ended
Mar. 31, 2018
USD ($)
a
Feb. 28, 2018
USD ($)
a
May 31, 2017
USD ($)
a
Jun. 30, 2018
USD ($)
a
Jun. 30, 2017
USD ($)
a
Real Estate [Line Items]          
Approximate number of acres sold (acres) | a       120.0 11.02
Contract sale price | $       $ 2,750 $ 220
Loving County          
Real Estate [Line Items]          
Approximate number of acres sold (acres) | a   40.0 11.02    
Contract sale price | $   $ 1,150 $ 220    
Culberson County          
Real Estate [Line Items]          
Approximate number of acres sold (acres) | a 80.0        
Contract sale price | $ $ 1,600