Note 10 - Leases (Details Textual) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Difference Between Rental Income Contracted and Rental Income Recognized		$ 22,500	$ 33,800	$ 22,600
Other Assets [Member]
Finance Lease, Right-of-Use Asset, after Accumulated Amortization		26,200
Other Liabilities [Member]
Finance Lease, Liability	[1],[2]	$ 24,432
Minimum [Member]
Lessee, Operating Lease, Remaining Lease Term (Year)		1 year
Maximum [Member]
Lessee, Operating Lease, Remaining Lease Term (Year)		47 years 10 months 24 days
Lessee, Operating Lease, Renewal Term (Year)		75 years
Shopping Centers [Member] | Minimum [Member]
Lessor, Operating Lease, Term of Contract (Year)		5 years
Shopping Centers [Member] | Maximum [Member]
Lessor, Operating Lease, Term of Contract (Year)		25 years
Annual Minimum Rentals Plus Incremental Rents [Member] | Rental Revenue [Member] | Customer Concentration Risk [Member]
Concentration Risk, Percentage		98.00%	98.00%	98.00%

[1] Includes bargain purchase options exercisable in 2023 related to two properties.

[2] Operating lease liabilities are included in Operating lease liabilities and financing lease liabilities are included in Other liabilities on the Company's Consolidated Balance Sheets.