Note 3 - Real Estate - Relative Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
2022 Real Estate Acquisitions [Member]
Business Acquisition [Line Items]
Land	$ 16,734
Building	116,908
Building and site improvements	6,459
Intangible lease assets	5,939
Furniture and equipment	1,681
Total real estate assets acquired	147,721
Other assets	3,645
Total assets acquired	151,366
Accounts payable and accrued expenses	(3,077)
Intangible lease liabilities	(213)
Assumed mortgage indebtedness	(15,466)
Total liabilities assumed	(18,756)
Assets acquired net of liabilities assumed	$ 132,610
2021 Real Estate Acquisitions [Member]
Business Acquisition [Line Items]
Land		$ 10,884
Building		33,889
Building and site improvements		10,001
Intangible lease assets		14,816
Total real estate assets acquired		69,590
Other assets		3,977
Total assets acquired		73,567
Accounts payable and accrued expenses		(4,674)
Intangible lease liabilities		(1,502)
Deferred tax liabilities		(495)
Assumed mortgage and other indebtedness		(31,514)
Total liabilities assumed		(38,185)
Assets acquired net of liabilities assumed		$ 35,382