Note 14 - Leases - Lease Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Lease Cost:
Amortization of right of use assets	$ 27	$ 10
Interest expense on finance leases	3	2	$ 0
Operating lease cost	1,263	1,207
Variable lease cost	263	215
Short-term lease cost	43	28
Total lease cost	1,599	1,462
Operating cash flows from operating leases	1,284	1,212
Financing cash flows from finance leases	29	11	$ (0)
ROU assets obtained in exchange for finance lease obligations	$ 198	$ 110
Finance (Year)	4 years 6 months 14 days
Operating (Year)	3 years 11 months 12 days	1 year 9 months 10 days
Finance	2.10%	2.26%
Operating	2.63%	4.37%