Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Real estate assets:
Operating properties, net of accumulated depreciation of $692,126 and $577,139 in 2020 and 2019, respectively	$ 6,011,375	$ 5,669,324
Projects under development	205,376	410,097
Land	97,196	116,860
Total real estate assets	6,313,947	6,196,281
Real estate assets and other assets held for sale, net of accumulated depreciation and amortization of $61,093 in 2019	0	360,582
Cash and cash equivalents	28,255	15,603
Restricted cash	1,947	2,005
Notes and accounts receivable	35,078	23,680
Deferred rents receivable	119,982	102,314
Investment in unconsolidated joint ventures	129,857	133,884
Intangible assets, net	224,066	257,649
Other assets	55,316	59,449
Total assets	6,908,448	7,151,447
Liabilities:
Notes payable	1,939,517	2,222,975
Accounts payable and accrued expenses	183,350	209,904
Deferred income	57,199	52,269
Intangible liabilities, net of accumulated amortization of $66,343 and $55,798 in 2020 and 2019, respectively	72,560	83,105
Other liabilities	115,493	134,128
Liabilities of real estate assets held for sale, net of accumulated amortization of $7,771 in 2019	0	21,231
Total liabilities	2,368,119	2,723,612
Commitments and contingencies
Stockholders' investment:
Preferred stock, $1 par value, 20,000,000 shares authorized, 1,716,837 shares issued and outstanding in 2019	0	1,717
Common stock, $1 par value, 300,000,000 shares authorized, 151,153,042 and 149,347,382 shares issued, and 148,568,109 and 146,762,449 shares outstanding in 2020 and 2019, respectively	151,153	149,347
Additional paid-in capital	5,540,945	5,493,883
Treasury stock at cost, 2,584,933 shares in 2020 and 2019	(148,473)	(148,473)
Distributions in excess of cumulative net income	(1,028,289)	(1,137,200)
Total stockholders' investment	4,515,336	4,359,274
Nonredeemable noncontrolling interests	24,993	68,561
Total equity	4,540,329	4,427,835
Total liabilities and equity	$ 6,908,448	$ 7,151,447