Real Estate and Water Assets, Net (Details) Components of Real Estate (USD $)	Dec. 31, 2012	Dec. 31, 2011
Real Estate [Abstract]
Real estate	$ 166,220,000	$ 161,733,000
Real estate improvements, net of accumulated amortization of $9.1 million in 2012 and $8.3 million in 2011	4,464,000	8,197,000
Water and water rights	86,764,000	79,020,000
Pipeline rights and water credits at Fish Springs	84,890,000
Real estate and water assets, net	342,338,000	333,840,000
Improvements to real estate, accumulated amortization	$ 9,100,000	$ 8,300,000