Note 4 - Deferred Costs and Intangible Assets - Deferred Costs and Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Deferred costs	$ 348	$ 348
Lease origination costs	1,463	1,376
In-place leases	428	428
Real estate tax abatements	9,142	9,142
Total deferred costs and intangible assets	11,381	11,294
Less accumulated amortization	(5,111)	(4,670)
Total deferred costs and intangible assets, net	$ 6,270	$ 6,624