Note 9 - Leases (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Operating Lease, Right-of-Use Asset, Periodic Reduction	$ 138,000	$ 101,000
Operating Lease, Cost	$ 177,000	118,000
Operating Lease, Weighted Average Remaining Lease Term	6 years 9 months 7 days
Operating Lease, Weighted Average Discount Rate, Percent	14.20%
Variable Lease, Cost	$ 8,000	39,000
Short-Term Lease, Cost	$ 92	$ 11