Note 6 - Leases - Lease Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Operating lease cost	$ 1,643	$ 1,014
Finance lease interest cost	102	69
Finance lease amortization expense	637	306
Total lease cost	2,382	1,389
Cash paid for amounts included in the measurement of lease liabilities	1,058	777
Property Acquired under Operating Lease	$ 4,999
Operating leases (Year)	10 years 255 days
Finance leases (Year)	3 years 36 days
Operating leases	7.50%
Finance leases	5.20%