Note 8 - Goodwill and Other Intangible Assets - Summary of Core Deposit Intangible Asset (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Gross Carrying Amount	$ 2,762	$ 2,762
Less: Accumulated Amortization	(759)	(483)
Net Carrying Amount	$ 2,003	$ 2,279