Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Assets
Land	$ 1,158,342	$ 1,098,526
Buildings and improvements	7,242,256	6,935,971
Real estate assets, at cost, total	8,400,598	8,034,497
Accumulated depreciation	(2,638,693)	(2,403,149)
Net operating real estate assets	5,761,905	5,631,348
Properties under development, including land	440,917	293,978
Investments in joint ventures	21,715	22,283
Total real estate assets	6,224,537	5,947,609
Accounts receivable – affiliates	23,170	22,920
Other assets, net	238,014	205,454
Cash and cash equivalents	157,239	34,378
Restricted cash	5,686	9,225
Total assets	6,648,646	6,219,586
Liabilities
Unsecured notes payable	2,432,137	1,836,427
Secured notes payable	45,250	485,176
Accounts payable and accrued expenses	170,689	146,866
Accrued real estate taxes	74,658	54,358
Distributions payable	80,764	74,982
Other liabilities	187,367	183,999
Total liabilities	2,990,865	2,781,808
Commitments and contingencies (Note 13)
Non-qualified deferred compensation share awards	0	52,674
Equity
Common shares of beneficial interest; $0.01 par value per share; 175,000 shares authorized; 108,882 and 105,503 issued; 106,472 and 103,080 outstanding at September 30, 2019 and December 31, 2018, respectively	1,065	1,031
Additional paid-in capital	4,538,422	4,154,763
Distributions in excess of net income attributable to common shareholders	(599,615)	(495,496)
Treasury shares, at cost (9,640 and 9,841 common shares at September 30, 2019 and December 31, 2018, respectively)	(348,556)	(355,804)
Accumulated other comprehensive (loss) income	(6,438)	6,929
Total common equity	3,584,878	3,311,423
Non-controlling interests	72,903	73,681
Total equity	3,657,781	3,385,104
Total liabilities and equity	$ 6,648,646	$ 6,219,586