Note 5 - Other Assets - Schedule of Other Assets, Net (Detail) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Prepaid assets and deposits	$ 343	$ 1,380
Leasing commission costs and incentives, net	2,304	2,141
Right-of-use assets, net	$ 1,360	$ 1,494
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Total assets	Total assets
Pre-acquisition costs	$ 1	$ 6
Other receivables, net	32	35
Corporate property, net	124	144
Total assets	5,287	6,327
Related Party [Member]
Property, Plant and Equipment [Line Items]
Receivables from related parties	$ 1,123	$ 1,127