Business Segments - Revenue Components of Farming Segments (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenue from External Customer [Line Items]
Total revenues	$ 51,252	$ 45,338	$ 47,089
Farming segment
Revenue from External Customer [Line Items]
Total revenues	23,435	23,610	23,136
Farming segment | Almonds
Revenue from External Customer [Line Items]
Total revenues	10,036	10,857	8,898
Farming segment | Pistachios
Revenue from External Customer [Line Items]
Total revenues	7,585	7,537	8,644
Farming segment | Wine grapes
Revenue from External Customer [Line Items]
Total revenues	3,978	4,094	5,136
Farming segment | Hay
Revenue from External Customer [Line Items]
Total revenues	1,361	928	583
Farming segment | Total crop proceeds
Revenue from External Customer [Line Items]
Total revenues	22,960	23,416	23,261
Farming segment | Other farming revenues
Revenue from External Customer [Line Items]
Total revenues	$ 475	$ 194	$ (125)