Note 4 - Leases - Lease Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Operating lease	$ 693	$ 868
Current lease obligation	182	189
Long-term lease obligation	611	794
Operating Lease, Liability	793	983
Operating lease cost	211	246
Short-term lease cost	930	560
Sublease income	0	(71)
Total lease costs	$ 1,141	$ 735
Weighted average lease term (years) (Year)	3 years 10 months 24 days	4 years 9 months 18 days
Weighted average discount rate	4.25%	4.34%