Reporting Segments and Related Information - Revenue Components of Ranch Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenue from External Customer [Line Items]
Net operating income (loss)	$ (2,013)	$ (2,235)	$ (199)	$ (5,708)
Ranch operations
Revenue from External Customer [Line Items]
Total revenues	839	860	1,828	1,941
Net operating income (loss)	(509)	(601)	(909)	(1,013)
Ranch operations | Game management
Revenue from External Customer [Line Items]
Total revenues	308	277	604	578
Ranch operations | Grazing
Revenue from External Customer [Line Items]
Total revenues	401	474	807	898
Ranch operations | High Desert Hunt Club
Revenue from External Customer [Line Items]
Total revenues	17	24	183	190
Ranch operations | Filming and other
Revenue from External Customer [Line Items]
Total revenues	$ 113	$ 85	$ 234	$ 275