Note 13 - Leases (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Operating Lease, Cost	$ 74	$ 69
Operating Lease, Liability	75	132
Operating Lease, Liability, Current	$ 61	$ 62
Operating Lease, Weighted Average Discount Rate, Percent	7.60%	6.30%
Operating Lease, Weighted Average Remaining Lease Term (Year)	1 year	2 years
Minimum [Member]
Lessee, Operating Lease, Term of Contract (Year)	1 year
Maximum [Member]
Lessee, Operating Lease, Term of Contract (Year)	5 years