Segment Reporting - Assets and Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Segment Reporting, Asset Reconciling Item
Assets	$ 770,879	$ 762,552
Water Resource and Water Storage Operations
Segment Reporting, Asset Reconciling Item
Assets	191,828	193,105
Real Estate Operations
Segment Reporting, Asset Reconciling Item
Assets	315,991	276,954
Agribusiness Operations
Segment Reporting, Asset Reconciling Item
Assets	162,257	155,005
Corporate
Segment Reporting, Asset Reconciling Item
Assets	$ 100,803	$ 137,488