Real Estate and Tangible Water Assets, Net (Details) (USD $)	12 Months Ended					1 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012	Nov. 30, 2014
Impairment of real estate assets	$ (2,865,000)	[1]	$ (417,000)	[1]
Real estate held for sale	0
Real estate and improvements held and used, net of accumulated amortization of $10.9 million in 2014 and $10 million in 2013	16,463,000		14,790,000
Leasehold Improvements
Amortization of leasehold improvements	879,000		879,000		879,000
Real Estate Operations
Impairment of real estate assets	2,900,000					(3,500,000)
Real estate and improvements held and used, net of accumulated amortization of $10.9 million in 2014 and $10 million in 2013	$ 1,400,000

[1] The Company had a non-recurring fair value measurement of a real estate asset discussed in Note 2 “Real Estate and Tangible Water Assets, Net.”