Note 5 - Other Assets - Schedule of Other Assets, Net (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Other Assets, Unclassified [Abstract]
Prepaid assets and deposits	$ 1,722	$ 1,619
Leasing commission costs	805	89
Right-of-use assets, net	$ 695	$ 852
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Total	Total
Straight-line rent receivable	$ 2,343	$ 1,398
Pre-acquisition costs	8	280
Other receivables, net of allowance of $0 and $75	101	82
Furniture and equipment	64	68
Receivables from related parties	$ 1,170	$ 208
Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Total	Total
Derivative assets	$ 3,426	$ 3
Total	$ 10,334	$ 4,599