Note 6 - Leases - Lease Term and Discount Rate (Details)	Dec. 31, 2022	Dec. 31, 2021
Weighted average discount rate - operating leases	4.20%	3.80%
Weighted average discount rate - finance leases	6.10%	6.10%
Weighted average remaining lease term in years - operating leases (Year)	7 years 2 months 12 days	7 years 9 months 18 days
Weighted average remaining lease term in years - finance leases (Year)	2 years	3 years