Accounts Receivable, Net (Schedule Of Accounts Receivable) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Insurance Settlements Receivable	$ 782	$ 1,967
Revenue Bond Receivable	18,959	22,164
Straight-line rent receivable	71,925	67,618
Allowance for doubtful accounts	(1,084)	(871)
Total	106,480	98,939
Tenants [Member]
Carrying amounts of accounts receivable	15,822	7,564
Non-Tenants [Member]
Carrying amounts of accounts receivable	$ 76	$ 497