Note 3 - Real Estate (Details Textual) - USD ($) $ in Millions			3 Months Ended	6 Months Ended
	Feb. 08, 2022	Dec. 21, 2021	Jun. 30, 2022	Jun. 30, 2022
Midtown Row [Member]
Business Acquisition [Line Items]
Purchase price		$ 122.0
Amount of security deposit will be forfeited				$ 0.2
Real estate expense			$ 0.2	0.2
Colfax Land Parcel [Member]
Business Acquisition [Line Items]
Purchase price	$ 2.5
Amount of security deposit will be forfeited				0.3
Real estate expense			$ 0.3	$ 0.3