Real Estate and Water Assets, Net (Details) (USD $)	12 Months Ended									1 Months Ended	12 Months Ended					12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011 Fish Springs Assets	Dec. 31, 2010 Fish Springs Assets	Dec. 31, 2010 Carson River	Dec. 31, 2012 Leasehold Improvements	Dec. 31, 2011 Leasehold Improvements	Dec. 31, 2010 Leasehold Improvements	Sep. 30, 2007 Fish Springs Ranch, LLC acre-foot	Dec. 31, 2012 Fish Springs Ranch, LLC acre-foot	May 31, 2006 Fish Springs Ranch, LLC acre-foot	Dec. 31, 2012 Direct Construction Costs Fish Springs Ranch, LLC	Dec. 31, 2012 Water Credits Fish Springs Ranch, LLC	Dec. 31, 2012 Capitalized Interest Costs Fish Springs Ranch, LLC	Dec. 31, 2011 Real Estate Operations
Amortization of leasehold improvements							$ 879,000	$ 879,000	$ 879,000
Fair value of Fish Springs asset						26,600,000
Real estate and water assets, net	342,338,000	333,840,000		101,100,000		36,900,000
Impairment loss on real estate and water assets		21,404,000	10,316,000	16,224,000	10,300,000	10,300,000
Impairment of real estate assets																5,200,000
Carrying value of water rights applications	111,600,000	111,600,000
Pipeline rights and water credits at Fish Springs	84,890,000			84,890,000									92,700,000	6,400,000	2,000,000
Water credits held (in acre-feet)											7,987
Litigation settlement										$ 7,300,000
Water rights, permitted annually (in acre-feet)											13,000
Water rights, annual limits specified by settlement (in acre-feet)										8,000	8,000
License fee, percent of gross revenue from volume in excess of limit										12.00%	12.00%
Water rights, annual limits specified by regulatory agencies (in acre-feet)											8,000	8,000