Note 5 - Goodwill and Intangible Assets - Acquired Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Goodwill	$ 19,460	$ 19,460
Core deposit intangibles, gross carrying amount	5,634	5,634
Core deposit intangibles, accumulated amortization	4,773	4,735
Total, gross carrying amount	$ 25,094	$ 25,094