Note 13 - Fair Value Measurements - Estimate of Fair Value Differs From Carrying Amounts (Details) - USD ($) $ in Thousands		Mar. 31, 2023	Dec. 31, 2022
Reported Value Measurement [Member]
Notes payable, net (1)	[1]	$ 6,778,050	$ 6,780,969
Reported Value Measurement [Member] | Mortgages [Member]
Mortgages payable, net	[2]	374,285	376,917
Estimate of Fair Value Measurement [Member]
Notes payable, net (1)	[1]	5,870,915	5,837,401
Estimate of Fair Value Measurement [Member] | Mortgages [Member]
Mortgages payable, net	[2]	$ 316,139	$ 311,659

[1] 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 March 31, 2023 and December 31, 2022, were $5.9 billion and $5.8 billion, respectively.

[2] The Company determined that its valuation of its mortgages payable were classified within Level 3 of the fair value hierarchy.