Summary Of Significant Accounting Policies (Schedule Of Restricted Deposits And Mortgage Escrows) (Details) - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2015	Dec. 31, 2014
Accounting Policies [Abstract]
Restricted cash	[1]	$ 8,404	$ 77,739
Mortgage escrows		1,848	2,259
Total		10,252	$ 79,998
Qualified escrow, use of funds		77,400
Qualified escrow for like-kind exchange, proceeds		$ 5,900

[1] The decrease between the periods presented is primarily attributable to the use of funds from a qualified escrow account of $77.4 million, offset by $5.9 million of funds placed in a qualified escrow account for the purpose of completing like-kind exchange transactions.