Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands		Jun. 30, 2020	Dec. 31, 2019
Assets:
Real estate, net of accumulated depreciation and amortization of $2,606,653 and $2,500,053, respectively		$ 9,397,045	$ 9,209,053
Real estate under development			229,900
Cash and cash equivalents		201,687	123,947
Marketable securities		633,551	9,353
Accounts and notes receivable, net		250,150	218,689
Operating lease right-of-use assets, net		96,437	99,125
Other assets		214,028	345,012
Total assets	[1]	11,559,970	10,997,867
Liabilities:
Notes payable, net		4,961,972	4,831,759
Mortgages and construction loan payable, net		388,406	484,008
Dividends payable		5,366	126,274
Operating lease liabilities		90,364	92,711
Other liabilities		477,545	516,265
Total liabilities	[2]	5,923,653	6,051,017
Redeemable noncontrolling interests		17,943	17,943
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 432,503,634 and 431,814,951 shares, respectively		4,325	4,318
Paid-in capital		5,752,658	5,765,233
Cumulative distributions in excess of net income		(200,492)	(904,679)
Total stockholders' equity		5,556,511	4,864,892
Noncontrolling interests		61,863	64,015
Total equity		5,618,374	4,928,907
Total liabilities and equity		11,559,970	10,997,867
Real Estate Under Development [Member]
Assets:
Real estate under development		5,672	220,170
Investments in and Advances to Real Estate Joint Ventures [Member]
Assets:
Investments in and advances to real estate joint ventures		585,363	578,118
Other Real Estate Investments [Member]
Assets:
Other real estate investments		$ 176,037	$ 194,400

[1] Includes restricted assets of consolidated variable interest entities (“VIEs”) at June 30, 2020 and December 31, 2019 of $104,214 and $245,489, respectively. See Footnote 10 of the Notes to Condensed Consolidated Financial Statements.

[2] Includes non-recourse liabilities of consolidated VIEs at June 30, 2020 and December 31, 2019 of $64,780 and $153,436, respectively. See Footnote 10 of the Notes to Condensed Consolidated Financial Statements.