Note 5 - Leases - Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Operating lease cost	$ 581	$ 531
Finance lease interest cost	94	23
Finance lease amortization expense	182	163
Total lease cost	857	717
Cash paid for amounts included in the measurement of lease liabilities	434	357
Property Acquired Under Operating Lease	$ 0	$ 858
Operating leases (Year)	9 years 3 months 18 days
Finance leases (Year)	3 years
Operating leases	7.70%
Finance leases	5.20%