Reporting Segments and Related Information - Revenue Components of Ranch Operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenue from External Customer [Line Items]
Net operating income (loss)	$ 3,050	$ (1,414)	$ 2,851	$ (7,122)
Ranch operations
Revenue from External Customer [Line Items]
Total revenues	796	868	2,624	2,809
Net operating income (loss)	(557)	(285)	(1,466)	(1,298)
Ranch operations | Game management
Revenue from External Customer [Line Items]
Total revenues	386	277	990	918
Ranch operations | Grazing
Revenue from External Customer [Line Items]
Total revenues	337	474	1,144	1,292
Ranch operations | High Desert Hunt Club
Revenue from External Customer [Line Items]
Total revenues	0	0	183	0
Ranch operations | Filming and other
Revenue from External Customer [Line Items]
Total revenues	$ 73	$ 117	$ 307	$ 599