Note 4 - Leases - Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Operating lease expense	$ 238	$ 282
Financing lease expense	0	8
Short Term lease expense	11	3
Total lease expense	$ 249	293
Weighted Average Remaining Lease Term (Years) - operating leases (Year)	4 years 9 months 21 days		5 years 11 months 15 days
Weighted Average Remaining Lease Term (Years) - financing leases (Year)			6 months 29 days
Weighted Average Discount Rate - operating leases	3.13%		3.20%
Weighted Average Discount Rate - financing leases	0.00%		5.00%
Operating cash flows from operating leases	$ 324	309
Operating cash flows from financing lease	0	1
Financing cash flows from financing lease	$ (0)	$ 5