Summary of Significant Accounting Policies, Restricted Cash and Cash Equivalents (Details) (USD $)	0 Months Ended	1 Months Ended	12 Months Ended
	Mar. 01, 2013	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2012
Restricted Cash [Abstract]
Restricted cash and cash equivalents			$ 14,019,000	$ 14,221,000
Diversified Lands Mitigation Escrow Agreement [Member]
Restricted Cash [Abstract]
Restricted cash and cash equivalents			21,000	97,000
Katrina/Rita storm recovery bonds [Member]
Restricted Cash [Abstract]
Restricted cash and cash equivalents			8,986,000	8,781,000
Katrina/Rita collections net of administration fees			20,600,000
Katrina/Rita bond principal payments	7,100,000	6,800,000
Katrina/Rita bond interest payments	3,300,000	3,100,000
Future Storm Restoration Costs [Member]
Restricted Cash [Abstract]
Restricted cash and cash equivalents			4,726,000	5,343,000
Building Renovations Escrow [Member]
Restricted Cash [Abstract]
Restricted cash and cash equivalents			$ 286,000	$ 0