Reporting Segments and Related Information - Revenue Components of Ranch Operations (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2017 USD ($) a field	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Revenue from External Customer [Line Items]
Area of land | a	270,000
Total revenues	$ 35,657	$ 45,577	$ 51,147
Ranch operations | High Desert Hunt Club
Revenue from External Customer [Line Items]
Area of land | a	6,400
Hunting fields | field	35
Operating Segments
Revenue from External Customer [Line Items]
Total revenues	$ 35,657	45,577	51,147
Operating Segments | Ranch operations
Revenue from External Customer [Line Items]
Total revenues	3,837	3,338	3,923
Operating Segments | Ranch operations | Game management
Revenue from External Customer [Line Items]
Total revenues	1,291	1,296	1,658
Operating Segments | Ranch operations | Grazing
Revenue from External Customer [Line Items]
Total revenues	1,677	1,187	1,484
Operating Segments | Ranch operations | High Desert Hunt Club
Revenue from External Customer [Line Items]
Total revenues	351	334	351
Operating Segments | Ranch operations | Filming and other
Revenue from External Customer [Line Items]
Total revenues	$ 518	$ 521	$ 430