Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
ASSETS
Property	$ 4,200,483	$ 4,145,249
Accumulated Depreciation	(1,174,347)	(1,110,675)
Property, net *	3,026,136	3,034,574
Investment in Real Estate Joint Ventures and Partnerships, net	404,495	427,947
Total	3,430,631	3,462,521
Unamortized Lease Costs, net	139,084	148,479
Accrued Rent, Accrued Contract Receivables and Accounts Receivable (net of allowance for doubtful accounts of $14,294 in 2020) *	79,392	83,639
Cash and Cash Equivalents *	50,215	41,481
Restricted Deposits and Escrows	14,281	13,810
Other, net	196,544	188,004
Total Assets	3,910,147	3,937,934
LIABILITIES AND EQUITY
Debt, net *	1,730,153	1,732,338
Accounts Payable and Accrued Expenses	132,670	111,666
Other, net	209,495	217,770
Total Liabilities	2,072,318	2,061,774
Commitments and Contingencies (see Note 12)	0	0
Shareholders' Equity:
Common Shares of Beneficial Interest - par value, $.03 per share; shares authorized: 275,000; shares issued and outstanding:128,143 in 2020 and 128,702 in 2019	3,891	3,905
Additional Paid-In Capital	1,769,115	1,779,986
Net Income Less Than Accumulated Dividends	(106,051)	(74,293)
Accumulated Other Comprehensive Loss	(11,154)	(11,283)
Total Shareholders' Equity	1,655,801	1,698,315
Noncontrolling Interests	182,028	177,845
Total Equity	1,837,829	1,876,160
Total Liabilities and Equity	3,910,147	3,937,934
Variable Interest Entity, Primary Beneficiary [Member]
ASSETS
Property, net *	194,112	196,636
Accrued Rent, Accrued Contract Receivables and Accounts Receivable (net of allowance for doubtful accounts of $14,294 in 2020) *	9,462	10,548
Cash and Cash Equivalents *	13,477	8,135
Total Assets	230,133	228,954
LIABILITIES AND EQUITY
Debt, net *	$ 44,384	$ 44,993