Note 4 - Intangibles (Details Textual) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Finite-Lived Intangible Assets [Line Items]
Net amortization related to above market leases and below market leases	$ (0.1)	$ (0.1)	$ (0.3)	$ (0.2)
Weighted average remaining amortization period of below-market lease intangibles			2 years
In-Place Leases [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization of in-place leases	$ 1.9	$ 1.1	$ 3.8	$ 2.1
Weighted average remaining amortization period of in-place lease intangibles			3 years 2 months 12 days
Above-Market Leases [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted average remaining amortization period of above-market lease intangibles			4 years 2 months 12 days