Note 11 - Variable Interest Entities ("VIE") - Summary of Restricted Assets and VIE Liabilities (Details) $ in Thousands		Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Cash and cash equivalents		$ 367,331	$ 325,631
Accounts and notes receivable, net		253,687	254,677
Other assets		364,721	340,176
Assets, Total	[1]	18,543,581	18,459,199
Mortgages payable, net		378,644	448,652
Operating lease liabilities		122,615	123,779
Other liabilities		697,510	730,690
Liabilities, Total	[2]	$ 8,314,939	$ 8,335,537
Variable Interest Entity, Unencumbered [Member]
Number of consolidated VIEs		29	30
Variable Interest Entity, Encumbered by Third Party Non-resource Mortgage Debt [Member]
Number of consolidated VIEs		4	4
Variable Interest Entity, Primary Beneficiary [Member]
Number of consolidated VIEs		33	34
Variable Interest Entity, Primary Beneficiary [Member] | Nonrecourse [Member]
Mortgages payable, net		$ 79,700	$ 78,900
Accounts payable and accrued expenses		10,000	11,800
Operating lease liabilities		6,700	6,700
Other liabilities		55,600	56,500
Liabilities, Total		151,955	153,924
Variable Interest Entity, Primary Beneficiary [Member] | Asset Pledged as Collateral [Member]
Real estate, net		220,700	222,900
Cash and cash equivalents		3,100	2,000
Accounts and notes receivable, net		2,200	2,000
Other assets		1,700	1,000
Assets, Total		$ 227,748	$ 227,858

[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.