Note 6 - Leasees - Lease Income (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Fixed lease income (1)	[1]	$ 217,155	$ 214,804
Variable lease income (2)	[2]	58,907	66,516
Above-market and below-market leases amortization, net		9,942	9,314
Total lease cost		$ 286,004	$ 290,634

[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.