Business Segments - Revenue Components of Farming Segments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenue from External Customer [Line Items]
Segment revenues	$ 51,147	$ 51,069	$ 45,000
Operating Segments | Farming segment
Revenue from External Customer [Line Items]
Segment revenues	23,836	23,435	23,610
Operating Segments | Farming segment | Almonds
Revenue from External Customer [Line Items]
Segment revenues	12,238	10,036	10,857
Operating Segments | Farming segment | Pistachios
Revenue from External Customer [Line Items]
Segment revenues	6,425	7,585	7,537
Operating Segments | Farming segment | Wine grapes
Revenue from External Customer [Line Items]
Segment revenues	4,338	3,978	4,094
Operating Segments | Farming segment | Hay
Revenue from External Customer [Line Items]
Segment revenues	749	1,361	928
Operating Segments | Farming segment | Total crop proceeds
Revenue from External Customer [Line Items]
Segment revenues	23,750	22,960	23,416
Operating Segments | Farming segment | Other farming revenues
Revenue from External Customer [Line Items]
Segment revenues	$ 86	$ 475	$ 194