Note 12 - Variable Interest Entities - Summary of Restricted Assets and VIE Liabilities (Details) $ in Thousands		Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Mar. 31, 2022 USD ($)
Real estate, net of accumulated depreciation and amortization of $3,523,503 and $3,417,414, respectively		$ 15,108,018	$ 15,039,828
Cash and cash equivalents		326,210		$ 146,970
Accounts and notes receivable, net		303,063	304,226
Other assets		411,956	401,642
Assets	[1]	17,961,229	17,826,122
Mortgages payable, net		374,285	376,917
Accounts payable and accrued expenses		203,053	207,815
Operating lease liabilities		112,413	113,679
Other liabilities		609,266	601,574
Liabilities	[1]	$ 8,082,389	$ 8,086,280
Variable Interest Entity, Unencumbered [Member]
Number of consolidated VIEs		29	29
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		32	32
Variable Interest Entity, Primary Beneficiary [Member] | Nonrecourse [Member]
Mortgages payable, net		$ 109,700	$ 109,700
Accounts payable and accrued expenses		11,400	10,900
Operating lease liabilities		5,200	5,200
Other liabilities		72,700	73,300
Liabilities		198,959	199,132
Variable Interest Entity, Primary Beneficiary [Member] | Asset Pledged as Collateral [Member]
Real estate, net of accumulated depreciation and amortization of $3,523,503 and $3,417,414, respectively		421,200	425,500
Cash and cash equivalents		8,700	7,900
Accounts and notes receivable, net		2,900	1,700
Other assets		2,300	1,500
Assets		$ 435,118	$ 436,605

[1] Total assets include restricted assets of consolidated variable interest entities (“VIEs”) at March 31, 2023 and December 31, 2022 of $435,118 and $436,605, respectively. Total liabilities include non-recourse liabilities of consolidated VIEs at March 31, 2023 and December 31, 2022 of $198,959 and $199,132, respectively. See Footnote 12 of the Notes to Condensed Consolidated Financial Statements.