Note 18 - Supplemental Schedule of Non-cash Investing / Financing Activities - Non-cash Investing and Financing Activities (Details) - USD ($) $ in Thousands			3 Months Ended	9 Months Ended
		Aug. 03, 2021	Sep. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Surrender of common stock				$ 20,826	$ 5,329
Dividends payable			$ 5,366	5,366	5,366	$ 5,366
Capital expenditures accrual				35,451	41,373
Lease liabilities arising from obtaining operating right-of-use assets				553	0
Allocation of fair value to noncontrolling interests				2,068	0
Purchase price fair value adjustment to prepaid rent				15,620	0
Weingarten Merger:
Below-market leases			(120,441)	(120,441)	0
Common stock issued in exchange for Weingarten shares	[1]		(3,738,735)	(3,738,735)
Weingarten Realty Investors [Member]
Weingarten Merger:
Real estate assets			5,624,707	5,624,707	0
Investments in and advances to real estate joint ventures			586,248	586,248	0
Notes payable			(1,497,632)	(1,497,632)	0
Mortgages payable			(317,671)	(317,671)	0
Below-market leases			(120,441)	(120,441)
Noncontrolling interests			$ (179,037)	(179,037)	0
Other assets and liabilities, net				(149,813)	0
Lease liabilities arising from obtaining operating right-of-use assets		$ 32,600		32,569	0
Lease liabilities arising from obtaining financing right-of-use assets		$ 23,800		23,778	0
Common stock issued in exchange for Weingarten shares				$ (3,738,735)	$ 0

[1] See Footnotes 1 and 3 of the Company's Condensed Consolidated Financial Statements for further details.