Summary of Significant Accounting Policies - Vineyards and Orchards (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Revenue from External Customer [Line Items]
Farming revenue adjustments for differences between original estimates and actual revenues received	$ 2,668	$ 1,882	$ 1,144
Pistachios [Member]
Revenue from External Customer [Line Items]
Farming revenue adjustments for differences between original estimates and actual revenues received	1,676	1,335	823
Almonds [Member]
Revenue from External Customer [Line Items]
Farming revenue adjustments for differences between original estimates and actual revenues received	$ 992	$ 531	$ 287