Note 14 - Leases - Operating Lease (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Jan. 01, 2021	Dec. 31, 2020
ROU assets	$ 25,500	$ 26,814	$ 0
Total present value of lease payments	$ 26,199	$ 27,456	$ 0
Weighted-average remaining lease term (in years) (Year)	7 years 3 months	7 years 4 months 13 days
Weighted-average discount rate	0.95%	0.94%