Note 13 - Variable Interest Entities ("VIE") - Summary of Restricted Assets and VIE Liabilities (Details) $ in Thousands		Sep. 30, 2021 USD ($)	Dec. 31, 2020 USD ($)
Cash and cash equivalents		$ 474,260	$ 292,953
Accounts and notes receivable, net		235,082	219,248
Other assets		380,675	233,192
Assets, Total	[1]	18,590,521	11,614,498
Mortgages payable, net		482,634	311,272
Operating lease liabilities		125,015	96,619
Other liabilities		772,251	470,995
Liabilities, Total	[2]	$ 8,419,313	$ 5,928,460
Variable Interest Entity, Unencumbered [Member]
Number of consolidated VIEs		30	19
Variable Interest Entity, Encumbered by Third Party Non-resource Mortgage Debt [Member]
Number of consolidated VIEs		4	3
Variable Interest Entity, Primary Beneficiary [Member]
Number of consolidated VIEs		34	22
Variable Interest Entity, Primary Beneficiary [Member] | Nonrecourse [Member]
Mortgages payable, net		$ 79,700	$ 36,500
Operating lease liabilities		6,700	5,500
Other liabilities		36,100	20,100
Liabilities, Total		122,500	62,100
Variable Interest Entity, Primary Beneficiary [Member] | Asset Pledged as Collateral [Member]
Real estate, net		225,100	97,700
Cash and cash equivalents		1,800	1,800
Accounts and notes receivable, net		2,000	1,900
Other assets		1,900	1,100
Assets, Total		$ 230,800	$ 102,500

[1] Includes restricted assets of consolidated variable interest entities ("VIEs") at September 30, 2021 and December 31, 2020 of $230,847 and $102,482, respectively. See Footnote 13 of the Notes to Condensed Consolidated Financial Statements.

[2] Includes non-recourse liabilities of consolidated VIEs at September 30, 2021 and December 31, 2020 of $122,475 and $62,076, respectively. See Footnote 13 of the Notes to Condensed Consolidated Financial Statements.