Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands		Mar. 31, 2022	Dec. 31, 2021
Assets:
Real estate, net of accumulated depreciation and amortization of $3,128,182 and $3,010,699, respectively		$ 14,950,391	$ 15,035,900
Cash and cash equivalents		370,318	334,663
Marketable securities		1,334,873	1,211,739
Accounts and notes receivable, net		253,687	254,677
Operating lease right-of-use assets, net		145,784	147,458
Other assets		364,721	340,176
Total assets	[1]	18,543,581	18,459,199
Liabilities:
Notes payable, net		7,110,804	7,027,050
Mortgages payable, net		378,644	448,652
Dividends payable		5,366	5,366
Operating lease liabilities		122,615	123,779
Other liabilities		697,510	730,690
Total liabilities	[2]	8,314,939	8,335,537
Redeemable noncontrolling interests		13,480	13,480
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 618,002,532 and 616,658,593 shares, respectively		6,180	6,167
Paid-in capital		9,589,955	9,591,871
Retained earnings		412,659	299,115
Accumulated other comprehensive income		2,216	2,216
Total stockholders' equity		10,011,030	9,899,389
Noncontrolling interests		204,132	210,793
Total equity		10,215,162	10,110,182
Total liabilities and equity		18,543,581	18,459,199
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		1,013,940	1,006,899
Other Real Estate Investments [Member]
Assets:
Other investments		$ 104,195	$ 122,015

[1] Includes restricted assets of consolidated variable interest entities (“VIEs”) at March 31, 2022 and December 31, 2021 of $227,748 and $227,858, respectively. See Footnote 11 of the Notes to Condensed Consolidated Financial Statements.

[2] Includes non-recourse liabilities of consolidated VIEs at March 31, 2022 and December 31, 2021 of $151,955 and $153,924, respectively. See Footnote 11 of the Notes to Condensed Consolidated Financial Statements.