Summary Of Significant Accounting Policies (Schedule Of Restricted Deposits And Mortgage Escrows) (Details) (USD $)	6 Months Ended
	Jun. 30, 2013		Dec. 31, 2012
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	$ 5,171,000	[1]	$ 36,944,000	[1]
Mortgage escrows	4,319,000		7,152,000
Total	9,490,000		44,096,000
Qualified escrow for like-kind exchange	$ 30,700,000

[1] The decrease between the periods presented is primarily attributable to the use of $30.7 million in a qualified escrow account associated with an acquisition in 2013.