Note 17 - Fair Value Disclosure of Financial Instruments - Estimate of Fair Value Differs From Carrying Amounts (Details) - USD ($) $ in Thousands		Dec. 31, 2023	Dec. 31, 2022
Reported Value Measurement [Member]
Notes payable, net (2)	[1]	$ 7,262,851	$ 6,780,969
Reported Value Measurement [Member] | Mortgages [Member]
Mortgages payable, net	[2],[3]	353,945	376,917
Reported Value Measurement [Member] | Mortgage and Other Financing Receivables [Member] | Fair Value, Inputs, Level 3 [Member]
Mortgage and other financing receivables (1)		130,745	87,359
Estimate of Fair Value Measurement [Member]
Notes payable, net (2)	[1]	6,671,450	5,837,401
Estimate of Fair Value Measurement [Member] | Mortgages [Member]
Mortgages payable, net	[2],[3]	329,955	311,659
Estimate of Fair Value Measurement [Member] | Mortgage and Other Financing Receivables [Member] | Fair Value, Inputs, Level 3 [Member]
Mortgage and other financing receivables (1)		$ 122,323	$ 87,359

[1] The Company determined that the valuation of its mortgage and other financing receivables were classified within Level 3 of the fair value hierarchy.

[2] The Company determined that its valuation of its mortgages payable were classified within Level 3 of the fair value hierarchy. The carrying value includes deferred financing costs of $1.2 million and $1.7 million as of December 31, 2023 and 2022, respectively.

[3] The Company determined that the valuation of its senior unsecured notes were classified within Level 2 of the fair value hierarchy. The estimated fair value amounts classified as Level 2 as of December 31, 2023 and 2022, were $6.7 billion and $5.8 billion, respectively. The carrying value includes deferred financing costs of $65.0 million and $66.4 million as of December 31, 2023 and 2022, respectively.