Real Estate and Tangible Water Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Real Estate [Abstract]
Real estate and improvements held and used, net of accumulated depreciation of $12,003 at June 30, 2017 and December 31, 2016, respectively	$ 9,469	$ 9,469
Other real estate inventories completed or under development	5,724	5,724
Tangible water assets	29,969	42,498
Total real estate and tangible water assets	45,162	57,691
Accumulated depreciation	$ 12,003	$ 12,003