Note 5 - Other Assets - Schedule of Other Assets, Net (Detail) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Other Assets Unclassified [Abstract]
Prepaid assets and deposits	$ 1,111	$ 1,708
Straight-line rent receivable	1,782	1,398
Right-of-use assets, net	$ 644	$ 852
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Total	Total
Pre-acquisition costs	$ 231	$ 280
Other receivables, net of allowance of $75 and $75, respectively	155	82
Corporate property, net	91	68
Receivables due from related parties	191	208
Derivative assets	2,185	3
Total	$ 6,390	$ 4,599