Note 11 - Variable Interest Entities ("VIE") - Summary of Restricted Assets and VIE Liabilities (Details) $ in Thousands		Mar. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Cash and cash equivalents		$ 253,852	$ 293,188
Accounts and notes receivable, net		200,655	219,248
Other assets		249,835	233,192
Assets, Total	[1]	11,699,703	11,614,498
Mortgages payable, net		295,613	311,272
Operating lease liabilities		95,833	96,619
Other liabilities		510,704	470,995
Liabilities, Total	[2]	$ 5,953,384	$ 5,928,460
Variable Interest Entity, Unencumbered [Member]
Number of consolidated VIEs		20	19
Variable Interest Entity, Encumbered by Third Party Non-resource Mortgage Debt [Member]
Number of consolidated VIEs		3	3
Variable Interest Entity, Primary Beneficiary [Member]
Number of consolidated VIEs		23	22
Variable Interest Entity, Primary Beneficiary [Member] | Nonrecourse [Member]
Mortgages payable, net		$ 36,200	$ 36,500
Operating lease liabilities		5,500	5,500
Other liabilities		55,000	20,100
Liabilities, Total		96,700	62,100
Variable Interest Entity, Primary Beneficiary [Member] | Asset Pledged as Collateral [Member]
Real estate, net		97,100	97,700
Cash and cash equivalents		1,600	1,800
Accounts and notes receivable, net		1,600	1,900
Other assets		1,600	1,100
Assets, Total		$ 101,900	$ 102,500

[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.