Segment Reporting - Revenue (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Segment Reporting, Revenue Reconciling Item
Revenues	$ 84,650	$ 61,276
Total loss before income taxes	(19,565)	(15,691)
Water resource and water storage operations
Segment Reporting, Revenue Reconciling Item
Revenues	210	136
Total loss before income taxes	(1,492)	(1,985)
Real estate operations
Segment Reporting, Revenue Reconciling Item
Revenues	43,680	25,766
Total loss before income taxes	(3,779)	(6,277)
Agribusiness operations
Segment Reporting, Revenue Reconciling Item
Revenues	39,326	34,867
Total loss before income taxes	(10,482)	(4,192)
Corporate
Segment Reporting, Revenue Reconciling Item
Revenues	1,434	507
Total loss before income taxes	$ (3,812)	$ (3,237)