Note 5 - Leases - Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Operating lease cost	$ 531	$ 357
Finance lease interest cost	23	22
Finance lease amortization expense	163	152
Total lease cost	717	531
Cash paid for amounts included in the measurement of lease liabilities	357	210
Right-of-use assets obtained in exchange for lease obligations	$ 858
Operating leases (Year)	9 years 328 days
Finance leases (Year)	3 years 73 days
Operating leases	7.70%
Finance leases	5.20%