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Note 2 - Basis of Presentation and Summary of Significant Accounting Policies - Changes in CDI (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Amortization of intangible assets	$ 2,568	$ 3,853	$ 6,347
Core Deposits [Member]
Balance, intangible	10,459	9,730	9,730
Acquired from acquisitions	0	729	0
Balance, intangible	10,459	10,459	9,730
Balance, accumulated amortization	6,741	5,655	4,534
Amortization of intangible assets	923	1,086	1,121
Balance, accumulated amortization	7,664	6,741	5,655
Total	$ 2,795	$ 3,718	$ 4,075

X

- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

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