Note 10 - Variable Interest Entities ("VIE") - Summary of Restricted Assets and VIE Liabilities (Details) $ in Thousands		Sep. 30, 2020 USD ($)	Dec. 31, 2019 USD ($)
Cash and cash equivalents		$ 324,977	$ 123,947
Accounts and notes receivable, net		239,864	218,689
Other Assets, Total		218,724	345,012
Assets, Total	[1]	11,524,192	10,997,867
Mortgages and construction loan payable, net		314,641	484,008
Other liabilities		517,185	516,265
Liabilities, Total	[2]	$ 5,968,822	$ 6,051,017
Variable Interest Entity, Unencumbered [Member]
Number of consolidated VIEs		19	19
Variable Interest Entity, Encumbered by Third Party Non-resource Mortgage Debt [Member]
Number of consolidated VIEs		3	4
Variable Interest Entity, Primary Beneficiary [Member]
Number of consolidated VIEs		22	23
Variable Interest Entity, Primary Beneficiary [Member] | Nonrecourse [Member]
Mortgages and construction loan payable, net		$ 37,000	$ 104,500
Other liabilities		27,700	48,900
Liabilities, Total		64,700	153,400
Variable Interest Entity, Primary Beneficiary [Member] | Asset Pledged as Collateral [Member]
Real estate, net		98,300	228,900
Cash and cash equivalents		2,400	9,200
Accounts and notes receivable, net		1,800	3,800
Other Assets, Total		1,600	3,600
Assets, Total		$ 104,100	$ 245,500

[1] Includes restricted assets of consolidated variable interest entities (“VIEs”) at September 30, 2020 and December 31, 2019 of $104,087 and $245,489, respectively. See Footnote 10 of the Notes to Condensed Consolidated Financial Statements.

[2] Includes non-recourse liabilities of consolidated VIEs at September 30, 2020 and December 31, 2019 of $64,704 and $153,436, respectively. See Footnote 10 of the Notes to Condensed Consolidated Financial Statements.