Segment Reporting (Details) Revenue (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Segment Reporting, Revenue Reconciling Item
Revenues	$ 12,550	$ 9,891	$ 18,235	$ 13,915
Income (loss) before income taxes	(10,604)	(1,851)	(17,537)	(7,651)
Water Resource and Water Storage Operations
Segment Reporting, Revenue Reconciling Item
Revenues	355	336	1,811	688
Income (loss) before income taxes	(1,817)	(1,482)	(2,979)	(3,062)
Real Estate Operations
Segment Reporting, Revenue Reconciling Item
Revenues	1,589	7,172	5,413	8,343
Income (loss) before income taxes	(2,411)	(239)	(3,756)	(1,980)
Agribusiness Operations
Segment Reporting, Revenue Reconciling Item
Revenues	9,658	6	9,684	8
Income (loss) before income taxes	(2,528)	(587)	(3,054)	(973)
Corporate
Segment Reporting, Revenue Reconciling Item
Revenues	948	2,377	1,327	4,876
Income (loss) before income taxes	$ (3,848)	$ 457	$ (7,748)	$ (1,636)