Note 9 - Allowance for Credit Losses and Credit Quality Information - Provision for Credit Losses (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2024	Mar. 31, 2023
Loans		$ (208)	$ (32)
Unfunded commitments		(1)	24
Total	[1]	$ (209)	$ (8)

[1] The Company adopted Accounting Standard Update (ASU) 2016-13 as of January 1, 2023. The 2022 amount presented is calculated under the prior accounting standard.