Note 14 - Leases - Lease Term and Discount Rate (Details)	Sep. 30, 2021	Dec. 31, 2020
Weighted average discount rate - operating leases	3.60%	3.30%
Weighted average discount rate - finance leases	6.10%	5.70%
Weighted average remaining lease term in years - operating leases (Year)	7 years 10 months 24 days	1 year 6 months
Weighted average remaining lease term in years - finance leases (Year)	3 years 2 months 12 days	10 months 24 days