Condensed Consolidated Balance Sheets (Current Period Unaudited - USD ($) $ in Thousands		Mar. 31, 2021	Dec. 31, 2020
Assets:
Real estate, net of accumulated depreciation and amortization of $2,727,002 and $2,717,114, respectively		$ 9,410,039	$ 9,346,041
Cash and cash equivalents		253,852	293,188
Marketable securities		767,989	706,954
Accounts and notes receivable, net		200,655	219,248
Operating lease right-of-use assets, net		101,433	102,369
Other assets		249,835	233,192
Total assets	[1]	11,699,703	11,614,498
Liabilities:
Notes payable, net		5,045,868	5,044,208
Mortgages payable, net		295,613	311,272
Dividends payable		5,366	5,366
Operating lease liabilities		95,833	96,619
Other liabilities		510,704	470,995
Total liabilities	[2]	5,953,384	5,928,460
Redeemable noncontrolling interests		17,852	15,784
Commitments and Contingencies
Stockholders' equity:
Preferred stock, $1.00 par value, authorized 7,054,000 shares; Issued and outstanding (in series) 19,580 shares; Aggregate liquidation preference $489,500		20	20
Common stock, $.01 par value, authorized 750,000,000 shares; Issued and outstanding 433,448,386 and 432,518,743 shares, respectively		4,334	4,325
Paid-in capital		5,763,868	5,766,511
Cumulative distributions in excess of net income		(104,909)	(162,812)
Total stockholders' equity		5,663,313	5,608,044
Noncontrolling interests		65,154	62,210
Total equity		5,728,467	5,670,254
Total liabilities and equity		11,699,703	11,614,498
Real Estate Under Development [Member]
Assets:
Real estate under development		5,672	5,672
Investments in and Advances to Real Estate Joint Ventures [Member]
Assets:
Investments in and advances to real estate joint ventures		592,791	590,694
Other Real Estate Investments [Member]
Assets:
Other real estate investments		$ 117,437	$ 117,140

[1] Includes restricted assets of consolidated variable interest entities (“VIEs”) at March 31, 2021 and December 31, 2020 of $101,947 and $102,482, respectively. See Footnote 10 of the Notes to Condensed Consolidated Financial Statements.

[2] Includes non-recourse liabilities of consolidated VIEs at March 31, 2021 and December 31, 2020 of $96,660 and $62,076, respectively. See Footnote 10 of the Notes to Condensed Consolidated Financial Statements.