Note 14 - Leases - Weighted Average Remaining Terms and Discount Rates (Details)	Dec. 31, 2021	Dec. 31, 2020
Weighted Average Remaining Lease Term - operating leases (years) (Year)	3 years 1 month 6 days	4 years 4 months 24 days
Weighted Average Remaining Lease Term - finance leases (years) (Year)	1 year 6 months
Weighted Average Discount Rate - operating leases	1.60%	2.60%
Weighted Average Discount Rate - finance leases	0.40%	0.50%