Quarterly report pursuant to Section 13 or 15(d)

Real Estate Activity Real Estate Activity - Acquired (Details)

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Real Estate Activity Real Estate Activity - Acquired (Details)
$ in Thousands
 3 Months Ended
Mar. 31, 2018
USD ($)
a
Mar. 31, 2017
USD ($)
a
Acres    
Balance at January 1, (in acres) | a 10,064.78 10,064.78
Additions (in acres) | a 640.60 0.00
Sales (in acres) | a 0.00 0.00
Balance at March 31, (in acres) | a 10,705.38 10,064.78
Book Value    
Balance at January 1, | $ $ 1,115 $ 1,115
Additions | $ 751 0
Sales | $ 0 0
Balance at March 31, | $ $ 1,866 $ 1,115