Note 4 - Leases - Lease Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Weighted Average Remaining Lease Term – Operating Leases (in years) (Year)	8 years 1 month 2 days	8 years 11 months 23 days
Operating Lease Cost	$ 1,522	$ 1,481
Weighted Average Discount Rate – Operating Leases	5.20%	5.06%
Short-term Lease Cost	$ 1,998	$ 2,587
Variable Lease Cost	464	502
Total Operating Lease Cost	3,984	4,570
Operating Lease – Operating Cash Flows	1,020	860
New ROU Assets – Operating Leases (non-cash)	$ 325	$ 8,084