Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
ASSETS
Operating (including $1,660,403 and $1,639,486 of consolidated variable interest entities, respectively)	$ 7,181,679	$ 6,950,188
Construction-in-progress (including $47,251 and $43,393 of consolidated variable interest entities, respectively)	535,658	684,873
Assets held for sale	27,773	0
Real estate, at cost, total	7,745,110	7,635,061
Less accumulated depreciation and amortization (including $268,723 and $247,410 of consolidated variable interest entities, respectively)	(1,970,173)	(1,876,544)
Net real estate	5,774,937	5,758,517
Cash and cash equivalents	56,116	15,188
Accounts and notes receivable, net	149,861	209,877
Mortgage notes receivable, net	30,429	30,429
Investment in real estate partnerships	22,613	23,941
Prepaid expenses and other assets	268,747	237,803
TOTAL ASSETS	6,302,703	6,275,755
Liabilities
Mortgages payable, net (including $447,246 and $460,372 of consolidated variable interest entities, respectively)	477,706	491,505
Capital lease obligations	71,538	71,556
Notes payable, net	368,389	320,265
Senior notes and debentures, net	2,402,851	2,401,440
Accounts payable and accrued expenses	178,665	196,332
Dividends payable	75,757	75,931
Security deposits payable	17,187	16,667
Other liabilities and deferred credits	181,601	169,388
Total liabilities	3,773,694	3,743,084
Commitments and contingencies (Note 6)
Redeemable noncontrolling interests	141,417	141,157
Shareholders’ equity
Common shares of beneficial interest, $.01 par, 100,000,000 shares authorized, 73,434,943 and 73,090,877 shares issued and outstanding, respectively	737	733
Additional paid-in capital	2,884,771	2,855,321
Accumulated dividends in excess of net income	(780,973)	(749,367)
Accumulated other comprehensive income	412	22
Total shareholders’ equity of the Trust	2,264,944	2,266,706
Noncontrolling interests	122,648	124,808
Total shareholders’ equity	2,387,592	2,391,514
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	6,302,703	6,275,755
5.0% Series C Cumulative Redeemable Preferred Shares, (stated at liquidation preference $25,000 per share), 6,000 shares issued and outstanding
Shareholders’ equity
Preferred shares, authorized 15,000,000 shares, $.01 par	150,000	150,000
5.417% Series 1 Cumulative Convertible Preferred Shares, (stated at liquidation preference $25 per share), 399,896 shares issued and outstanding
Shareholders’ equity
Preferred shares, authorized 15,000,000 shares, $.01 par	$ 9,997	$ 9,997