Note 8 - Leases - Lease Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Right-of-use lease asset	$ 3,068
Weighted Average Remaining Lease Term (Year)	4 years 299 days
Weighted Average Discount Rate	2.94%
Operating lease expense	$ 217	$ 199
Cash paid for operating leases	246	$ 215
Other Liabilities [Member]
Lease liability	$ 3,435