Business Segments - Revenue Components of Farming Segments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenue from External Customer [Line Items]
Segment revenues	$ 45,577	$ 51,147	$ 51,069
Operating Segments | Farming segment
Revenue from External Customer [Line Items]
Segment revenues	18,648	23,836	23,435
Operating Segments | Farming segment | Almonds
Revenue from External Customer [Line Items]
Segment revenues	7,373	12,238	10,036
Operating Segments | Farming segment | Pistachios
Revenue from External Customer [Line Items]
Segment revenues	6,199	6,425	7,585
Operating Segments | Farming segment | Wine grapes
Revenue from External Customer [Line Items]
Segment revenues	3,744	4,338	3,978
Operating Segments | Farming segment | Hay
Revenue from External Customer [Line Items]
Segment revenues	520	749	1,361
Operating Segments | Farming segment | Total crop proceeds
Revenue from External Customer [Line Items]
Segment revenues	17,836	23,750	22,960
Operating Segments | Farming segment | Other farming revenues
Revenue from External Customer [Line Items]
Segment revenues	$ 812	$ 86	$ 475