Note 6 - Leases - Lease Term and Discount Rate (Details)	Mar. 31, 2023	Dec. 31, 2022
Weighted average discount rate - operating leases	4.30%	4.20%
Weighted average discount rate - finance leases	6.10%	6.10%
Weighted average remaining lease term in years - operating leases (Year)	6 years 10 months 24 days	7 years 2 months 12 days
Weighted average remaining lease term in years - finance leases (Year)	1 year 9 months 18 days	2 years