Note 4 - Intangibles - Summary of Carrying Amount of Intangible Assets and Liabilities (Details) - Real Estate [Member] - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Assets:
Above-market leases	$ 4,070	$ 2,661
In-place leases	25,587	17,958
Total net real estate intangible assets	21,985	15,274
Liabilities
Below-market leases	4,277	3,290
Below-market leases accumulated amortization	(1,356)	(909)
Total net real estate intangible liabilities	2,921	2,381
Above-Market Leases [Member]
Assets:
Accumulated amortization	(773)	(504)
Total net real estate intangible assets	3,297
In-Place Leases [Member]
Assets:
Accumulated amortization	(6,899)	$ (4,841)
Total net real estate intangible assets	$ 18,688