Note 8 - Goodwill and Other Intangible Assets - Components of Other Intangible Assets, by Reporting Unit (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021		Dec. 31, 2020
Other intangible assets	$ 4,176	$ 5,622	[1]
Community Banking [Member]
Other intangible assets		5,622		$ 7,069
Core Deposits [Member]
Finite-lived intangible assets, gross	12,674
Accumulated amortization	$ (8,498)
Core Deposits [Member] | Community Banking [Member]
Finite-lived intangible assets, gross		12,674		12,674
Accumulated amortization		$ (7,052)		$ (5,605)

[1] Derived from audited financial statements