Accounts Receivable, Net (Schedule Of Accounts Receivable) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Straight-Line Rent Receivable	$ 38,037	$ 34,568
Total	80,491	116,193
Deferred Rent Receivables, Net	39,200
Collections, Deferred Rent, Cash Basis Tenants	6,000
Collections, Deferred Rent, Accrual Basis Tenants	53,500
Tenants [Member]
Total	41,531	81,120
Non-Tenants [Member]
Carrying amounts of accounts receivable	$ 923	$ 505