Note 17 - Fair Value Disclosure of Financial Instruments - Estimate of Fair Value Differs From Carrying Amounts (Details) - USD ($) $ in Thousands		Dec. 31, 2021	Dec. 31, 2020
Mortgages [Member]
Fair value debt adjustments, net		$ 10,800	$ 3,500
Reported Value Measurement [Member]
Notes payable, net	[1]	7,027,050	5,044,208
Reported Value Measurement [Member] | Mortgages [Member]
Fair value debt adjustments, net	[2]	448,652	311,272
Estimate of Fair Value Measurement [Member]
Notes payable, net	[1]	7,330,723	5,486,953
Estimate of Fair Value Measurement [Member] | Mortgages [Member]
Fair value debt adjustments, net	[2]	$ 449,758	$ 312,933

[1] The Company determined that the valuation of its Senior Unsecured Notes were classified within Level 2 of the fair value hierarchy and its Credit Facility was classified within Level 3 of the fair value hierarchy. The estimated fair value amounts classified as Level 2 as of December 31, 2021 and 2020, were $7.3 billion and $5.5 billion, respectively.

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