Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
ASSETS
Property	$ 4,202,337	$ 4,145,249
Accumulated Depreciation	(1,156,304)	(1,110,675)
Property Held for Sale, net	24,421
Property, net *	3,070,454	3,034,574
Investment in Real Estate Joint Ventures and Partnerships, net	401,724	427,947
Total	3,472,178	3,462,521
Unamortized Lease Costs, net	146,620	148,479
Accrued Rent, Accrued Contract Receivables and Accounts Receivable (net of allowance for doubtful accounts of $13,656 in 2020) *	73,760	83,639
Cash and Cash Equivalents *	14,203	41,481
Restricted Deposits and Escrows	14,063	13,810
Other, net	186,385	188,004
Total Assets	3,907,209	3,937,934
LIABILITIES AND EQUITY
Debt, net *	1,743,194	1,732,338
Accounts Payable and Accrued Expenses	97,776	111,666
Other, net	210,507	217,770
Total Liabilities	2,051,477	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:128,103 in 2020 and 128,702 in 2019	3,890	3,905
Additional Paid-In Capital	1,767,972	1,779,986
Net Income Less Than Accumulated Dividends	(85,008)	(74,293)
Accumulated Other Comprehensive Loss	(11,158)	(11,283)
Total Shareholders' Equity	1,675,696	1,698,315
Noncontrolling Interests	180,036	177,845
Total Equity	1,855,732	1,876,160
Total Liabilities and Equity	3,907,209	3,937,934
Variable Interest Entity, Primary Beneficiary [Member]
ASSETS
Property, net *	195,886	196,636
Accrued Rent, Accrued Contract Receivables and Accounts Receivable (net of allowance for doubtful accounts of $13,656 in 2020) *	9,071	10,548
Cash and Cash Equivalents *	9,757	8,135
Total Assets	228,190	228,954
LIABILITIES AND EQUITY
Debt, net *	$ 44,589	$ 44,993