Note 12 - Leases - Lease Income (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Fixed lease income	[1]	$ 1,045,888	$ 871,151	$ 880,694
Variable lease income	[2]	264,040	232,272	246,226
Above-market and below-market leases amortization, net		14,843	22,515	20,010
Total lease income		1,349,702	1,044,888	1,142,334
COVID 19 [Member]
Adjustments for potentially uncollectible revenues and disputed amounts	[3]	$ 24,931	$ (81,050)	$ (4,596)

[1] Includes minimum base rents, expense reimbursements, ancillary income and straight-line rent adjustments.

[2] Includes minimum base rents, expense reimbursements, percentage rent, lease termination fee income and ancillary income.

[3] The amounts represent adjustments associated with potentially uncollectible revenues and disputed amounts primarily due to the COVID-19 pandemic.