Note 9 - Leases (Details Textual) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Buildings and Equipment [Member]
Operating Lease, Right-of-Use Asset	$ 0.7	$ 0.2
Minimum [Member]
Lessee, Operating Lease, Remaining Lease Term (Month)	10 months
Maximum [Member]
Lessee, Operating Lease, Remaining Lease Term (Month)	96 months